5 Best Bitcoin Escrow Services in 2020 you could use (Updated)

5 Best Bitcoin Escrow Services in 2020 you could use (Updated)

5 Best Bitcoin Escrow Services in 2020 you could use (Updated) submitted by cryptoallbot to cryptoall [link] [comments]

5 Best Bitcoin Escrow Services in 2020 you could use (Updated)

5 Best Bitcoin Escrow Services in 2020 you could use (Updated) submitted by DavidBanks12 to Bitcoin_News_Daily [link] [comments]

5 Best Bitcoin Escrow Services in 2020 you could use (Updated)

submitted by DavidBanks12 to Bitcoin_News_Daily [link] [comments]

5 Best Bitcoin Escrow Services in 2020 you could use (Updated)

5 Best Bitcoin Escrow Services in 2020 you could use (Updated) submitted by DavidBanks12 to u/DavidBanks12 [link] [comments]

5 Best Bitcoin Escrow Services in 2020 you could use (Updated)

5 Best Bitcoin Escrow Services in 2020 you could use (Updated) submitted by DavidBanks12 to Crypto_Currency_News [link] [comments]

Complete List of Bitcoin Scams on Paxful

The article contents mentioned herewith are supplied by Paxful. This is a very important article every trader must read. For complete reading, read here https://paxful.com/blog/bitcoin-scam-detection-prevention/.
I have simply highlighted some Main scams here :

Inducing panic for a faster release

Like all bitcoin transactions, Paxful’s transactions are irreversible in nature. Once the bitcoin in escrow is released, there is no way to get it back unless the other party agrees to send it back. Some scammers pretend they have already made the payment and pressure sellers into making a fast release. As a seller, you should never release bitcoin before you have confirmed that the buyer has paid the designated amount in the trade.

Fake proof of transaction

Any photo or video can be manipulated with knowledge of photo editing software and a small amount of time. Often times, scammers spend time and energy on trying to make false proof documents look like they are legitimate. This can be debunked by digging deeper and checking records, because they can only fake proof on their end, not paxfuls.

Phishing bitcoin scams

Scammers often create phishing website that look nearly identical to major exchanges/marketplaces to try and obtain personal information from similar-looking input fields. They also try to lure unsuspecting people through email.

Coin locking extortions

Coin locking—which is holding a seller’s bitcoin in a trade escrow without the intention to make a payment—in itself is not a scam but the extortion which the scammers attempt after the coin is locked in the escrow is a pitiful scamming tactic.
There are two types of coin locking: innocent coin locking and malicious coin locking. New users who do not know much about the platform may end up opening a trade they don’t want to and mark it as paid. However, when the coins are locked, a moderator has to intervene and look into the case and it is likely that the bitcoin will be released back to seller.
There are malicious scammers who use extortion to bait sellers into selling/releasing their bitcoin. Some scammers make it a numbers game and start with small trades, hoping that someone will eventually release bitcoin out of pressure.
Some scammers, however, try to take hostage of a big amount in escrow until the case is resolved and blackmail sellers into selling small amounts of bitcoin before they remove themselves out of the trade.

Deliberate payment reversal (chargebacks)

Payment methods like Paypal, credit cards, debit cards, and certain online wallets are reversible in nature, meaning the payment can be reversed if the platform finds the trade to be suspicious. Of course, the definition of suspicious is open to interpretation and may vary for different platforms.
Bitcoin transactions, however, are irreversible in nature. If the buyer of the bitcoin can somehow convince the representative of a certain payment method that the transaction is suspicious in nature, the funds get sent back to the buyer, leaving the seller empty-handed without bitcoin or money.
Some payment methods are not bitcoin-friendly and will flag a transaction if they feel their platform has been used for buying/selling digital currencies. PayPal is among the companies that have a harsh stance against trading bitcoin.
Paxful encourages all users to take maximum precaution while dealing with these payment methods. For example, buying only from trusted vendors and not explicitly disclosing the purpose of the transaction as buying bitcoin.
submitted by thecryptostreet to paxful [link] [comments]

07-14 08:44 - 'Bitcoin Escrow' (self.Bitcoin) by /u/ScaredDrop removed from /r/Bitcoin within 76-86min

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Hello everyone!! Please what’s the best bitcoin escrow service.. Thanks a lot
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Bitcoin Escrow
Go1dfish undelete link
unreddit undelete link
Author: ScaredDrop
submitted by removalbot to removalbot [link] [comments]

Bitcoin Escrow service

Help..Guys I need a help..Who're the best Bitcoin Escrow service?
submitted by ToTheEvill to Bitcoin [link] [comments]

adams1122, batsman123, bradhoggs, Elvinselili1122, NewWatermelonlesson, r/ICOTOKEN: btcwonder.com

https://www.reddit.com/useadams1122/overview
https://www.reddit.com/usebatsman123/overview
https://www.reddit.com/usebradhoggs/overview
https://www.reddit.com/useElvinselili1122/overview
https://www.reddit.com/useNewWatermelonlesson/overview
/ICOTOKEN - batsman123's sub.
The sidebar is interesting. It begins with a valid sentence, continues with keyword salad and ends in a btcwonder.com link:
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submitted by Wonderdull to TheseFuckingAccounts [link] [comments]

Best escrow service for Bitcoin?

I would like to hear people's experiences with escrow services for Bitcoin. I'm aware of http://btcrow.com/ but have not used them. I also realize some individuals do escrow but again, I'd like some "been there, done that" perspective.
Do you recommend different services for different amounts of BTC?
submitted by dsterry to Bitcoin [link] [comments]

What is the best escrow service? /r/Bitcoin

What is the best escrow service? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Best Clearnet Bitcoin Escrow Service?

Hey guys, what Escrow service have you used that was great?
submitted by ugotcoodies to Bitcoin [link] [comments]

Everyday info sec, hardcore info sec, and DNMs

Edit: Currently writing a new version of this, dont know when it will be done.
Edit: Since first post I have updated a few sections with additional information.
I recommend reading it all even if it is very long, I might have placed some relevant info in different sections while thinking about what else needed to be added, plenty of steps remains mostly the same except when I comment directly on it. It is not necessary to do 100% security all the time, unless you absolutely need it, combining some high and some lower security ideas for a balance of security and convenience is useful.
I will base this mostly on Windows, Linux users probably know this, and I have no idea how apple machines work (tho many things in here are still relevant for other operating systems, as they are just general tips)
Disclaimer: There are certainly other steps that can make you more anonymous or safer, however I think for most people this will surfice. Any software I recommend should be independently verified for security, and examples of software are not to be taken as endorsements. I simply use examples and give recommendations when I believe it necessary, or helpful.
I will not really differentiate between anonymity and security, they are often the same thing. As such the word security can mean either more anonymous, less vulnerable, or both.
--------
Everyday Simple Info Sec:
-There could be a hidden administrator user on your PC, make sure to change its password
(Snapchat msgs, reddit dms, discord msgs, are just a few examples of msgs that are never encrypted)
-Any info even send in encrypted msgs (and obviously non encrypted) should still be kept with possible deniability, don't say "I'm gonna do MDMA", say "I'm going out with molly."
-DO NOT STORE ANY PASSWORDS ON GOOGLE, IF GOOGLE LOGIN IS AUTHENTICATED IT WILL AUTFILL ALL PASSWORDS IT HAS SAVED (same with other similar services) (This means if you are logged in to chrome and someone has access to your machine, they can auto fill passwords without entering a single password)
-use a rememberable passphrase, especially for your master key ring aka password manager A long sentence that is memorable makes an okay password (decent example,: "I met my wife at Little Ceasers for the first time on 07/09/20" better even if it's just something you know, if its impersonal, and if you can add special characters or numbers that you won't forget) (A better example for a passphrase is: "There is 0nly 0ne letter that d0esn’t appear in any U.S. state nameQ")
-Purge your internet activity frequently, there's a reason why I only have one post, and a few comments appearing in my account, but thousands of kama. Exposing information needlessly is not good.
-Never post private information publicly, and if you do, do it vaguely as possible. (Example: Not "I'm 15", say "I'm a teenager") Do not post any vital information ever, no birthdays, mother's maiden name, age, or anything you have ever seen in a security question. Never post your current activities while they are ongoing. You going on a vacation? Don't announce it to the world, taking picture there? Post them when you are home.
-Rethink how you do security questions. Many answers to security questions can be found in your internet history. One could use the first word of the security question as an answer, or a different sceme that will mean you always remember it. (Security question need to go, the amount of personal info an average person puts on the internet makes it easy to attack anything using security question)
-------_
High level crimimal information security:
The motto here is, "All the Security, All the Time" As one fuck up can end with you leaving a lick of traceability, and you could be fucked.
Pre Note: All of your software should always be up to date. Also even perfect info sec does not guarantee you are completely safe, a new zero day (exploit) can still fuck you, but good info security makes you significantly safer, by eliminating as many attacks as possible.
-Get a new device (or make a already owned device seem like you never owned it, do this only if you know how to, there's a lot of stuff that goes into that, like changing your mac adress etc) buy with cash, and your face covered, preferably far away from where you live. (Do I need to specify to not bring your phone or anything else that tracks your location to anywhere you want to go anonymously?) (Be aware that even hardware can have vulnerabilities, many cpus have known vulnerabilities, I can't list them all, do some research before buying)
-If you know how to use Tails (A linux distro designed for Info sec) use that, preferably on a USB. (Or learn how to use tails, its better, but complicated) Otherwise a clean copy of windows (make sure its not in any way associated with you) can do the job too, tho not as well. (Using a VM might give extra security, since VMs usually erase all data and RAM they were using on shutdown)
-Get a non tracking VPN, Enable the kill switch (a setting that disables all traffic that doesn't go through the VPN) (change your firewall settings to only allow the traffic from the VPN, windows guide (Change settings so only traffic from the tor application is send) Edit: (Due to complaints: do not use vpn over tor, use tor over vpn. tor over vpn has no notable downside, if the VPN logs it makes no difference, your ISP will always log anyways, and vpns remove other attack vectors and also provide backup security should tor fail. Again even if the VPN tracks you only change the people doing the tracking, but now you are further removed making it more anonymous and also with less vulnerabilities)
-rember privacy settings, cookie cleaner, and antivirus, password (There could be a hidden administrator user on your PC, make sure to change its password)
-Always use the device on a non admin account
-Ideally use this device only on networks that are not connected with you. Such as public networks (try to never use the same public networks twice, move around) (a home network should be fine now, as it should never be exposed, but more security is always better) (Its just a conveniences vs security trade)
-Never use accounts that have been exposed to lower security on higher security machines
-your browser is now TOR (or your preferred security focused browser, if you dont plan on using onion ) Make sure you get the standalone version of tor not the addon build (the standalone is safer, because there are less settings and options to tweak)
-Change your tor settings, to safest mode, enable a bridge (to my knowledge there's no difference in security between the build in bridges in tor), enable automatic updates, set duckduckgo onion as your primary browser. Set dark.fail onion page as your home page. (Or your preferred privacy search engine and onion directory)
-------_
How to use dark net markets (DNMs)
If you finished your High Security setup, we can dive right in. Otherwise go do that. This is where all that is essential.
Quick info on Tor, and onion sites. There is no search engine. It's all based of directories and addresses you are given by others. Tor will likely not be very quick, it has to pass through multiple networks to get to the destination. DNMs sometimes exit scam, an exit scam is when a market shuts down completely and takes all the money, this is a risk when using DNMs, it's not too common but happens maybe 0-4 times a year. The admins of thoese servers need to get out at some point, before they get jailed, so they exit the game, and scam everyone out of their money.
-A very useful onion directory is dark.fail it has a lot of links, for all kinds of stuff. News, email, DNMs, Psychonautwiki (harm reduction website), forums etc. (Other directories also exist)
-Pick a market, preferably one that handles secure connection server side instead of requiring you to establish the secure connection. Then create an account. Your account once created should include an entry box in your profile for a pgp key, post your PUBLIC key in there. (Verify the link is not a scam, most markets should provide a pgp signature)
-Next is currency setup. All major cryptocurrency exchangers can be used, I can recommend coin base but there could be better ones out there. Unless you find a small non U.S., exchange, they will always ask for your identity. So unless you can find a trustworthy exchange that doesn't ID, you will need to give it to them. (Side note, all major crypto exchangers report to the IRS, if the IRS asks you if you bought cryptocurrency and you bought while having IDed yourself SAY YES, DO NOT COMMIT TAX FRAUD WHEN THEY KNOW YOU DID)
-Transfer (monero you can send directly, btc you should scramble) to your wallet. There are two options a cold wallet (physical) or a software wallet. Software wallets usually dont cost anything so I recommend them, even if often less safe. Electrum is easy to use, and pretty safe. You can also do your own research and find a wallet that fits your needs.
-now you are ready to buy, only buy using escrow (it means the money is held by the market as a middle man until the product is delivered, they will also handle any issues like wrong quantity, cuts, etc), judge the reviews for a product, and if available look at the history of the vendor, until you find a product from a vendor you trust. (I recommend to buy within your country as much as possible, so it doesn't go through customs, it's very rare that something is found, but it can happen)
-now you get to buy, depending on market, you either have cryptocurrency stored in their wallets (not recommend, you will lose it in an exit scam) or you can send it every order. When you send your delivery adress (or the one you want it to go to) encrypt the adress using the sellers public key. Make sure the adress is correct.
-wait for the product, make sure to extend the escrow until the product arrives, if you can't extend it anymore dispute the order, and a moderator will step in
-test the product, use it, and leave a review. PLEASE LEAVE A REVIEW, DNMs only work because of reviews.
Edit: Didn't imagine I would write over 15000 words. Oh well, it was fun. Hope it helps, if you have any questions feel free to ask.
No idea how long this will stay up, I might purge it in 7 days, or never.
submitted by seven_N_A7 to u/seven_N_A7 [link] [comments]

Technical: Taproot: Why Activate?

This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given public key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

submitted by almkglor to Bitcoin [link] [comments]

Zano Newcomers Introduction/FAQ - please read!

Welcome to the Zano Sticky Introduction/FAQ!

https://preview.redd.it/al1gy9t9v9q51.png?width=424&format=png&auto=webp&s=b29a60402d30576a4fd95f592b392fae202026ca
Hopefully any questions you have will be answered by the resources below, but if you have additional questions feel free to ask them in the comments. If you're quite technically-minded, the Zano whitepaper gives a thorough overview of Zano's design and its main features.
So, what is Zano? In brief, Zano is a project started by the original developers of CryptoNote. Coins with market caps totalling well over a billion dollars (Monero, Haven, Loki and countless others) run upon the codebase they created. Zano is a continuation of their efforts to create the "perfect money", and brings a wealth of enhancements to their original CryptoNote code.
Development happens at a lightning pace, as the Github activity shows, but Zano is still very much a work-in-progress. Let's cut right to it:
Here's why you should pay attention to Zano over the next 12-18 months. Quoting from a recent update:
Anton Sokolov has recently joined the Zano team. ... For the last months Anton has been working on theoretical work dedicated to log-size ring signatures. These signatures theoretically allows for a logarithmic relationship between the number of decoys and the size/performance of transactions. This means that we can set mixins at a level from up to 1000, keeping the reasonable size and processing speed of transactions. This will take Zano’s privacy to a whole new level, and we believe this technology will turn out to be groundbreaking!
If successful, this scheme will make Zano the most private, powerful and performant CryptoNote implementation on the planet. Bar none. A quantum leap in privacy with a minimal increase in resource usage. And if there's one team capable of pulling it off, it's this one.

What else makes Zano special?

You mean aside from having "the Godfather of CryptoNote" as the project lead? ;) Actually, the calibre of the developers/researchers at Zano probably is the project's single greatest strength. Drawing on years of experience, they've made careful design choices, optimizing performance with an asynchronous core architecture, and flexibility and extensibility with a modular code structure. This means that the developers are able to build and iterate fast, refining features and adding new ones at a rate that makes bigger and better-funded teams look sluggish at best.
Zano also has some unique features that set it apart from similar projects:
Privacy Firstly, if you're familiar with CryptoNote you won't be surprised that Zano transactions are private. The perfect money is fungible, and therefore must be untraceable. Bitcoin, for the most part, does little to hide your transaction data from unscrupulous observers. With Zano, privacy is the default.
The untraceability and unlinkability of Zano transactions come from its use of ring signatures and stealth addresses. What this means is that no outside observer is able to tell if two transactions were sent to the same address, and for each transaction there is a set of possible senders that make it impossible to determine who the real sender is.
Hybrid PoW-PoS consensus mechanism Zano achieves an optimal level of security by utilizing both Proof of Work and Proof of Stake for consensus. By combining the two systems, it mitigates their individual vulnerabilities (see 51% attack and "nothing at stake" problem). For an attack on Zano to have even a remote chance of success the attacker would have to obtain not only a majority of hashing power, but also a majority of the coins involved in staking. The system and its design considerations are discussed at length in the whitepaper.
Aliases Here's a stealth address: ZxDdULdxC7NRFYhCGdxkcTZoEGQoqvbZqcDHj5a7Gad8Y8wZKAGZZmVCUf9AvSPNMK68L8r8JfAfxP4z1GcFQVCS2Jb9wVzoe. I have a hard enough time remembering my phone number. Fortunately, Zano has an alias system that lets you register an address to a human-readable name. (@orsonj if you want to anonymously buy me a coffee)
Multisig
Multisignature (multisig) refers to requiring multiple keys to authorize a Zano transaction. It has a number of applications, such as dividing up responsibility for a single Zano wallet among multiple parties, or creating backups where loss of a single seed doesn't lead to loss of the wallet.
Multisig and escrow are key components of the planned Decentralized Marketplace (see below), so consideration was given to each of them from the design stages. Thus Zano's multisig, rather than being tagged on at the wallet-level as an afterthought, is part of its its core architecture being incorporated at the protocol level. This base-layer integration means months won't be spent in the future on complicated refactoring efforts in order to integrate multisig into a codebase that wasn't designed for it. Plus, it makes it far easier for third-party developers to include multisig (implemented correctly) in any Zano wallets and applications they create in the future.
(Double Deposit MAD) Escrow
With Zano's escrow service you can create fully customizable p2p contracts that are designed to, once signed by participants, enforce adherence to their conditions in such a way that no trusted third-party escrow agent is required.
https://preview.redd.it/jp4oghyhv9q51.png?width=1762&format=png&auto=webp&s=12a1e76f76f902ed328886283050e416db3838a5
The Particl project, aside from a couple of minor differences, uses an escrow scheme that works the same way, so I've borrowed the term they coined ("Double Deposit MAD Escrow") as I think it describes the scheme perfectly. The system requires participants to make additional deposits, which they will forfeit if there is any attempt to act in a way that breaches the terms of the contract. Full details can be found in the Escrow section of the whitepaper.
The usefulness of multisig and the escrow system may not seem obvious at first, but as mentioned before they'll form the backbone of Zano's Decentralized Marketplace service (described in the next section).

What does the future hold for Zano?

The planned upgrade to Zano's privacy, mentioned at the start, is obviously one of the most exciting things the team is working on, but it's not the only thing.
Zano Roadmap
Decentralized Marketplace
From the beginning, the Zano team's goal has been to create the perfect money. And money can't just be some vehicle for speculative investment, money must be used. To that end, the team have created a set of tools to make it as simple as possible for Zano to be integrated into eCommerce platforms. Zano's API’s and plugins are easy to use, allowing even those with very little coding experience to use them in their E-commerce-related ventures. The culmination of this effort will be a full Decentralized Anonymous Marketplace built on top of the Zano blockchain. Rather than being accessed via the wallet, it will act more as a service - Marketplace as a Service (MAAS) - for anyone who wishes to use it. The inclusion of a simple "snippet" of code into a website is all that's needed to become part a global decentralized, trustless and private E-commerce network.
Atomic Swaps
Just as Zano's marketplace will allow you to transact without needing to trust your counterparty, atomic swaps will let you to easily convert between Zano and other cyryptocurrencies without having to trust a third-party service such as a centralized exchange. On top of that, it will also lead to the way to Zano's inclusion in the many decentralized exchange (DEX) services that have emerged in recent years.

Where can I buy Zano?

Zano's currently listed on the following exchanges:
https://coinmarketcap.com/currencies/zano/markets/
It goes without saying, neither I nor the Zano team work for any of the exchanges or can vouch for their reliability. Use at your own risk and never leave coins on a centralized exchange for longer than necessary. Your keys, your coins!
If you have any old graphics cards lying around(both AMD & NVIDIA), then Zano is also mineable through its unique ProgPowZ algorithm. Here's a guide on how to get started.
Once you have some Zano, you can safely store it in one of the desktop or mobile wallets (available for all major platforms).

How can I support Zano?

Zano has no marketing department, which is why this post has been written by some guy and not the "Chief Growth Engineer @ Zano Enterprises". The hard part is already done: there's a team of world class developers and researchers gathered here. But, at least at the current prices, the team's funds are enough to cover the cost of development and little more. So the job of publicizing the project falls to the community. If you have any experience in community building/growth hacking at another cryptocurrency or open source project, or if you're a Zano holder who would like to ensure the project's long-term success by helping to spread the word, then send me a pm. We need to get organized.
Researchers and developers are also very welcome. Working at the cutting edge of mathematics and cryptography means Zano provides challenging and rewarding work for anyone in those fields. Please contact the project's Community Manager u/Jed_T if you're interested in joining the team.
Social Links:
Twitter
Discord Server
Telegram Group
Medium blog
I'll do my best to keep this post accurate and up to date. Message me please with any suggested improvements and leave any questions you have below.
Welcome to the Zano community and the new decentralized private economy!
submitted by OrsonJ to Zano [link] [comments]

Introducing Bondly…

Introducing Bondly…
For us who use Decentralized Finance (DeFi) as a common term, we know it represents an enormous shift in how we transact with one another: borrowing money, exchanging currencies, how we view insurance, etc. While total assets involved in DeFi still seem to be increasing right now, there are various factors that will prevent us from growing further.
DeFi’s largest barriers for adoption
Interoperability — Right now Ethereum gas fees seem like they are always increasing and ETH 2.0 may still be 6 months or more away. We need the ability to make DeFi more accessible to individuals who can’t afford high gas prices per transaction and start including native blockchain assets that are stranded on other platforms.
Trust — Unfortunately our biggest issue is still trust. While none of us in crypto expect to know the identity of the other party, many of us just send funds to people we don’t know for vague promises of more wealth. In fact, the biggest type of fraud is still the “giveaway scam” which asks offer to send something back — but its only an offer, there is no guarantee. This is totally unsustainable.
What about doing business outside of crypto?
Ultimately, DeFi doesn’t keep going unless we create methods for non-crypto native businesses to integrate. While the community might approve sending crypto to each other without a safety in place, this will never work for 99% of online marketplaces.
So we need:
  • DeFi options on lower cost platforms
  • Trading across blockchains
  • Safer Transactions
  • More flexibility for peer to peer transactions
  • Easier methods for online marketplaces to integrate and use crypto
This is why we created Bondly.

https://preview.redd.it/5gs8v5ce1hu51.png?width=1400&format=png&auto=webp&s=fade2f7576626022460b7882f379552d44b678c7
Bondly is a brainchild of over 3 years of working in fintech digital escrow payments + love for native DeFi. Adding our cumulative 13 years of traditional financial services, 6 years of eCommerce marketing, 4 years of Ethereum blockchain development, we think this will be one of the most important next steps in DeFi.

What is Bondly?

Bondly is a trusted, transparent and portable swap protocol designed to make you into a marketplace.
Our family of trust-enabling, DeFi products are designed to be a part of your everyday buying and selling activities, giving you piece of mind for your next swap or online purchase.

BONDSWAP (BSWAP)

Similar to Binance OTC Trading Portal but directly on-chain and can be sent via any chat app using different blockchains
Wallet to Wallet trustless Over the Counter (OTC) trades that are performed by signing a smart contract. Completely portable smart link can be sent via a chat app or on your favorite social media. It will first support all ERC-20 tokens and NFT (Ethereum) then eventually
With BSWAP you can:
  • Sell a large order of a low liquidity token with no risk of slippage
  • Become your own NFT marketplace by minting the token, setting your own price, then post to your social media for your audience to buy
  • Buy assets using Debit/Credit card (using our third party partner onramp)
  • Send smart link in Telegram to someone you know or your favorite group

BOND DEX

Similar to Mooniswap but includes rewards token provided to Liquidity Providers on top of fee share
Interoperable Decentralized Exchange (DEX) thats easy to use and blockchain agnostic. Requires liquidity provider (LP) participants to pool assets for a portion of transaction fees along with rewards APY rewards. Our pricing engine will compare major cross chain swap options and will let you know the best one to use (even if its not us). Validation is done directly within your Web3 browser (with Metamask) or polkadot.js based Native Wallet.
With BOND DEX you can:
  • Trade native assets on Polkadot with USDC on Ethereum
  • Get recommendations on the cheapest bridge transaction path
  • Create your own asset pairs that otherwise might not exist

BOND PROTECT (BPROTECT)

Similar to Paypal/AliPay Express Buyer Protection combined with Escrow.com with a simple UX like Zapper.fi or Zircon
This is our most revolutionary product that we feel will have the largest impact to the eCommerce market.
PROTECT is decentralized escrow and buyer protection for customers of crypto friendly marketplaces.
  • Designed to replace all site specific crypto escrow products with an easy to use API and completely smart contract driven product. Marketplaces may still be in a ‘validator’ role for the marketplace transaction but now they don’t have direct access to funds. This mitigates misappropriation by the marketplace along with exit scamming
  • By participating in the Bondly network, marketplace vendors can represent themselves as BPROTECT ready and show their on-chain transaction history and successful Bondly enabled deals
  • BPROTECT will have a similar UX to Zapper.Fi that will pull this vendors on chain activity and history into one place across ethereum and our native substrate chain so you can see their status and history
  • Functions as a ‘Buyer Protection’ similar to most major marketplaces, where customers are protected by collateral within Bondly
  • First customers will be marketplaces that sell digital goods like Domain Names and In-Game items and that support crypto payments already. Existing domain name credentials and ownership will be wrapped in an NFT and swapped for requested crypto directly
  • Requires that the marketplace itself stakes Bondly collateral as well as each individual marketplace vendor
  • COMPLETELY UNDERCUTS the whole ‘fake review’ industry which is prominently used to inflate value on sites like Amazon.com
With BPROTECT you can
  • Give more trust to your buyers that you will provide the purchased asset in a timely fashion
  • As a buyer you can request sellers to use this method so you have more trust
  • Sell an asset via OTC that you do not have yet (e.g. waiting for vesting) by staking collateral in the Bondly network
  • Set up recurring payments from individuals to vendors that can deduct from your account every month, similar to a Netflix subscription completely crypto enabled

How does BOND PROTECT work?

For individual OTC Trades:
  • Seller stakes collateral and ensures the buyer will receive asset by a specified date or with a specific condition
  • If agreement is violated, collateral is forfeited and transferred to the buyer
For Marketplace Vendors:
  • Vendors stake collateral (earning staking rewards for doing so)
  • Should a vendor violate a sale condition (e.g. not deliver a good on time), BOND collateral is provided to buyers as compensation
  • Each sale is recorded on-chain for transparency
  • Vendors who provide extended positive service with a long term history are rewarded through our staking/LP rewards program

https://preview.redd.it/3t8a39rh1hu51.png?width=737&format=png&auto=webp&s=6c9e1f41cc862859bbee1e263f740bbe6a106057

Bonding with Polkadot

As our ‘sibling’ projects Darwinia and Bifrost have realized, Polkadot and using Substrate represents a phenomenal step forward in interoperability.
It offers:
  • Total flexibility for building a cross asset non-custodial token bridge
  • Seamless integration of our partners/peer bridges between infrastructure
  • Built in network security
  • Efficient token standard indexing for every type of asset in every type of blockchain
We don’t have Digital Money without Bitcoin; We don’t have Smart Contracts and DeFi without Ethereum; We don’t have true interoperability without Polkadot and Substrate.
In a future article we will talk more about our Kusama testnet release.

Whats next for BONDLY?

BONDSWAP for Ethereum, the first formal product release, will be available soon (so hold off on your OTC transaction until then). This will include support for the Bondly staking program. Detailed roadmaps for the other products will be announced soon!
In the meantime we will be making additional articles (but not limited to) the following topics:
  • Our first BPROTECT marketplace customers
  • The BONDLY Liquidity Marketplace
  • Partnership Announcements
  • Team Details
Please join our community and sign up for the alpha! We are so excited to share more with you soon!
Web: https://www.bondly.finance/
Twitter: https://twitter.com/BondlyFinance
Telegram: t.me/bondlyfinance
submitted by BondlyFinance to u/BondlyFinance [link] [comments]

Best Potential Moonshot Hands Down; TRUSTSWAP (SWAP) Full DeFi Suite, Simple P2P Trustless Escrow, and Great Tokenomics!

Trustswap https://www.coingecko.com/en/coins/trustswap
Okay guys I've spent the last two days learning about this token and I've come away very impressed. I think this token may be a serious contender for best performer this year. On the TrustSwap social platforms it feels like 2017. Here's some info about the company.
TrustSwap is a DeFi project created by the founder and CEO of Uptrennd Jeff Kirdeikis. Most notably he has the largest cryptocurrency investing group on Facebook, and he is what Tom was to MySpace but for Uptrennd. He host The Bitcoin and Crypto Podcast which is actually very good, and he has a massive following on Twitteother social. Better yet, this guy is a marketing genius like a less annoying Justin Sun. He has a pipeline of good news lined up and knows when and how to release that information on the masses. Everything he does seems meticulously thought through. He continually affirms his commitment to get SWAP listed on high volume exchanges with MXC yesterday, Hotbit today, and Houbi/Bitmax tomorrow he is actually succeeding. He is also very responsive and has team moderators standing by in the social media channels to field questions/vanquish FUD.
Here are the basics:
TrustSwap is building a DeFi ecosystem that will start out as a simple P2P trustless escrow and payment platform and evolve into a fully decentralized exchange (DEX) with leverage and futures options all offered via non-custodial smart contracts. They will also offer multi-chain token wrapping as a service and on-chain governance using the native ERC-20 token SWAP.
Imagine being able to wrap BTC, Monero, Digibyte, or any crypto and then trade it on uniswap, or have it interact with Ethereum compatible wallets, and applications.
Through this, you can move funds cross-chain without ever having to sign up to a Centralized Exchange, allowing you to never have to KYC, staying fully anonymous across exchanges.
Wrapping tokens also offers huge benefits to new blockchain projects that have their own chain, allowing them to save massively on listing fees, as well as instantly be connected to strong wallets and decentralized exchanges.
This puts the ability to trust back in the investor's hands and might spark a new ICO boom as new projects eager to establish credibility rush to use it. So yes beautiful wrapping everything layer 3 solution my brothren. And highly incentivised holding economics, for example rewarding users from fees collected from the DeFi network! And staking;
All fees paid to the platform will get split as follows:
80% goes back to holders as staking rewards
10% are burned forever (adding that value back to token holders)
10% goes to the dev fund which can be used as the community sees fit
This project has massive potential and is already building a strong community foundation with big moves coming soon as more exchanges and markets come on board. The staking and deflationary tokenomics make this a long term HODL for me.
Token Metrics:
Total Supply: 100,000,000 SWAP
Circulating Supply: 62,500,000 SWAP
Market Cap: $3.6 million
60,000,000 SWAP Initial liquidity offering on uniswap about two and half days ago, price dropped at like $0.035. Volume bottomed out and rising again (same with holder count).
20,000,000 Team Supply
20,000,000 Marketing, development, legal, bounties, OTC investors, airdrops.
LINKS:
Website: www.Trustswap.org
Discord: https://discord.gg/GNUrcK
Telegram: t.me/TrustSwap
Token address; https://etherscan.io/token/0xcc4304a31d09258b0029ea7fe63d032f52e44efe
Uniswap; https://app.uniswap.org/#/swap?inputCurrency=0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2&outputCurrency=0xcc4304a31d09258b0029ea7fe63d032f52e44efe
Extra nugget from Jeff on Discord; "@everyone
SwapLogo SWAP is listing on Hotbit this Monday! SwapLogo https://hotbit.zendesk.com/hc/en-us/articles/360051689713
This is the first step into TrustSwap's emergence in the Asian markets. We are going to be kicking off major marketing campaigns with an Asian marketing firm within the coming week to follow up this listing.
We also have a couple more Top-50 listings lined up for this week as well
When we had a vote to see which exchange you wanted to see SWAP listed on, Huobi was the winner by a massive margin, so we will be opening up the conversation with Huobi to get SWAP listed on there also in the near future."
DYOR!! Godspeed! I'll see you guys on the other side!
To address FUD about OTC investors dumping, yes they are dumping, it's my belief most weak hands have exited the market, they got in at $0.005 per SWAP.
submitted by Rational_Optimist to CryptoMoonShots [link] [comments]

10-13 10:25 - '[link] Buy Bitcoin with Cash by Mail (not recommended). I guess you will need to transfer Dinars to US dollars or Euros first somehow. Could that be done on for example marketplaces in Lybia? Paxful also offers services for fin...' by /u/TheMatthe removed from /r/Bitcoin within 0-8min

'''
[link]1 Buy Bitcoin with Cash by Mail (not recommended). I guess you will need to transfer Dinars to US dollars or Euros first somehow. Could that be done on for example marketplaces in Lybia? Paxful also offers services for finding sellers who accept cash through the mail. You may also find suitable sellers on darknet markets. As with in-person purchases, try to only trade with established users who have a good reputation. Choosing a reliable seller is your best protection against fraud, and escrow should always be employed. This method involves some obvious downsides, such as slowness and the risk that your envelope may get lost or stolen en route. I recommend wrapping the bills in a couple of layers of paper, so that they can’t be easily detected without opening the envelope. In the event that your envelope never arrives, or arrives empty, certain sellers may compensate you. To qualify, you may be requested to film or photograph yourself placing the money within the envelope, sealing it, and mailing it. For greater safety, I advise using registered mail, then having the seller sign after they receive it. This method creates a degree of proof that you paid via escrow, although the amount of cash within the envelope may still be disputed. Given the drawbacks of this method, I only recommend it for cash buyers who are too remote for other purchase methods.
'''
Context Link
Go1dfish undelete link
unreddit undelete link
Author: TheMatthe
1: p*x*ul.*om/
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

https://preview.redd.it/rqt2dldyg8e51.jpg?width=1044&format=pjpg&auto=webp&s=777ae9d4fbbb54c3540682b72700fc4ba3de0a44
We are excited to participate and present Syscoin Platform's ideal characteristics and capabilities towards a well-rounded Reddit Community Points solution!
Our scaling solution for Reddit Community Points involves 2-way peg interoperability with Ethereum. This will provide a scalable token layer built specifically for speed and high volumes of simple value transfers at a very low cost, while providing sovereign ownership and onchain finality.
Token transfers scale by taking advantage of a globally sorting mempool that provides for probabilistically secure assumptions of “as good as settled”. The opportunity here for token receivers is to have an app-layer interactivity on the speed/security tradeoff (99.9999% assurance within 10 seconds). We call this Z-DAG, and it achieves high-throughput across a mesh network topology presently composed of about 2,000 geographically dispersed full-nodes. Similar to Bitcoin, however, these nodes are incentivized to run full-nodes for the benefit of network security, through a bonded validator scheme. These nodes do not participate in the consensus of transactions or block validation any differently than other nodes and therefore do not degrade the security model of Bitcoin’s validate first then trust, across every node. Each token transfer settles on-chain. The protocol follows Bitcoin core policies so it has adequate code coverage and protocol hardening to be qualified as production quality software. It shares a significant portion of Bitcoin’s own hashpower through merged-mining.
This platform as a whole can serve token microtransactions, larger settlements, and store-of-value in an ideal fashion, providing probabilistic scalability whilst remaining decentralized according to Bitcoin design. It is accessible to ERC-20 via a permissionless and trust-minimized bridge that works in both directions. The bridge and token platform are currently available on the Syscoin mainnet. This has been gaining recent attention for use by loyalty point programs and stablecoins such as Binance USD.

Solutions

Syscoin Foundation identified a few paths for Reddit to leverage this infrastructure, each with trade-offs. The first provides the most cost-savings and scaling benefits at some sacrifice of token autonomy. The second offers more preservation of autonomy with a more narrow scope of cost savings than the first option, but savings even so. The third introduces more complexity than the previous two yet provides the most overall benefits. We consider the third as most viable as it enables Reddit to benefit even while retaining existing smart contract functionality. We will focus on the third option, and include the first two for good measure.
  1. Distribution, burns and user-to-user transfers of Reddit Points are entirely carried out on the Syscoin network. This full-on approach to utilizing the Syscoin network provides the most scalability and transaction cost benefits of these scenarios. The tradeoff here is distribution and subscription handling likely migrating away from smart contracts into the application layer.
  2. The Reddit Community Points ecosystem can continue to use existing smart contracts as they are used today on the Ethereum mainchain. Users migrate a portion of their tokens to Syscoin, the scaling network, to gain much lower fees, scalability, and a proven base layer, without sacrificing sovereign ownership. They would use Syscoin for user-to-user transfers. Tips redeemable in ten seconds or less, a high-throughput relay network, and onchain settlement at a block target of 60 seconds.
  3. Integration between Matic Network and Syscoin Platform - similar to Syscoin’s current integration with Ethereum - will provide Reddit Community Points with EVM scalability (including the Memberships ERC777 operator) on the Matic side, and performant simple value transfers, robust decentralized security, and sovereign store-of-value on the Syscoin side. It’s “the best of both worlds”. The trade-off is more complex interoperability.

Syscoin + Matic Integration

Matic and Blockchain Foundry Inc, the public company formed by the founders of Syscoin, recently entered a partnership for joint research and business development initiatives. This is ideal for all parties as Matic Network and Syscoin Platform provide complementary utility. Syscoin offers characteristics for sovereign ownership and security based on Bitcoin’s time-tested model, and shares a significant portion of Bitcoin’s own hashpower. Syscoin’s focus is on secure and scalable simple value transfers, trust-minimized interoperability, and opt-in regulatory compliance for tokenized assets rather than scalability for smart contract execution. On the other hand, Matic Network can provide scalable EVM for smart contract execution. Reddit Community Points can benefit from both.
Syscoin + Matic integration is actively being explored by both teams, as it is helpful to Reddit, Ethereum, and the industry as a whole.

Proving Performance & Cost Savings

Our POC focuses on 100,000 on-chain settlements of token transfers on the Syscoin Core blockchain. Transfers and burns perform equally with Syscoin. For POCs related to smart contracts (subscriptions, etc), refer to the Matic Network proposal.
On-chain settlement of 100k transactions was accomplished within roughly twelve minutes, well-exceeding Reddit’s expectation of five days. This was performed using six full-nodes operating on compute-optimized AWS c4.2xlarge instances which were geographically distributed (Virginia, London, Sao Paulo Brazil, Oregon, Singapore, Germany). A higher quantity of settlements could be reached within the same time-frame with more broadcasting nodes involved, or using hosts with more resources for faster execution of the process.
Addresses used: 100,014
The demonstration was executed using this tool. The results can be seen in the following blocks:
612722: https://sys1.bcfn.ca/block/6d47796d043bb4c508d29123e6ae81b051f5e0aaef849f253c8f3a6942a022ce
612723: https://sys1.bcfn.ca/block/8e2077f743461b90f80b4bef502f564933a8e04de97972901f3d65cfadcf1faf
612724: https://sys1.bcfn.ca/block/205436d25b1b499fce44c29567c5c807beaca915b83cc9f3c35b0d76dbb11f6e
612725: https://sys1.bcfn.ca/block/776d1b1a0f90f655a6bbdf559ff5072459cbdc5682d7615ff4b78c00babdc237
612726: https://sys1.bcfn.ca/block/de4df0994253742a1ac8ac9eec8d2a8c8b0a6d72c53d6f3caa29bb6c171b0a6b
612727: https://sys1.bcfn.ca/block/e5e167c52a9decb313fbaadf49a5e34cb490f8084f642a850385476d4ef10d70
612728: https://sys1.bcfn.ca/block/ab64d989edc71890e7b5b8491c20e9a27520dc45a5f7c776d3dae79057f59fe7
612729: https://sys1.bcfn.ca/block/5e8b7ecd0e36f99d07e4ea6e135fc952bf7ec30164ab6f4d1e98b0f2d405df6d
612730: https://sys1.bcfn.ca/block/d395df3d31dde60bbb0bece6bd5b358297da878f0beb96be389e5f0e043580a3
It is important to note that this POC is not focused on Z-DAG. The performance of Z-DAG has been benchmarked within realistic network conditions: Whiteblock’s audit is publicly available. Network latency tests showed an average TPS around 15k with burst capacity up to 61k. Zero-latency control group exhibited ~150k TPS. Mainnet testing of the Z-DAG network is achievable and will require further coordination and additional resources.
Even further optimizations are expected in the upcoming Syscoin Core release which will implement a UTXO model for our token layer bringing further efficiency as well as open the door to additional scaling technology currently under research by our team and academic partners. At present our token layer is account-based, similar to Ethereum. Opt-in compliance structures will also be introduced soon which will offer some positive performance characteristics as well. It makes the most sense to implement these optimizations before performing another benchmark for Z-DAG, especially on the mainnet considering the resources required to stress-test this network.

Cost Savings

Total cost for these 100k transactions: $0.63 USD
See the live fee comparison for savings estimation between transactions on Ethereum and Syscoin. Below is a snapshot at time of writing:
ETH price: $318.55 ETH gas price: 55.00 Gwei ($0.37)
Syscoin price: $0.11
Snapshot of live fee comparison chart
Z-DAG provides a more efficient fee-market. A typical Z-DAG transaction costs 0.0000582 SYS. Tokens can be safely redeemed/re-spent within seconds or allowed to settle on-chain beforehand. The costs should remain about this low for microtransactions.
Syscoin will achieve further reduction of fees and even greater scalability with offchain payment channels for assets, with Z-DAG as a resilience fallback. New payment channel technology is one of the topics under research by the Syscoin development team with our academic partners at TU Delft. In line with the calculation in the Lightning Networks white paper, payment channels using assets with Syscoin Core will bring theoretical capacity for each person on Earth (7.8 billion) to have five on-chain transactions per year, per person, without requiring anyone to enter a fee market (aka “wait for a block”). This exceeds the minimum LN expectation of two transactions per person, per year; one to exist on-chain and one to settle aggregated value.

Tools, Infrastructure & Documentation

Syscoin Bridge

Mainnet Demonstration of Syscoin Bridge with the Basic Attention Token ERC-20
A two-way blockchain interoperability system that uses Simple Payment Verification to enable:
  • Any Standard ERC-20 token to be moved from Ethereum to the Syscoin blockchain as a Syscoin Platform Token (SPT), and back to Ethereum
  • Any SPT to be moved from Syscoin to the Ethereum blockchain as an ERC-20 token, and back to Syscoin

Benefits

  • Permissionless
  • No counterparties involved
  • No trading mechanisms involved
  • No third-party liquidity providers required
  • Cross-chain Fractional Supply - 2-way peg - Token supply maintained globally
  • ERC-20s gain vastly improved transactionality with the Syscoin Token Platform, along with the security of bitcoin-core-compliant PoW.
  • SPTs gain access to all the tooling, applications and capabilities of Ethereum for ERC-20, including smart contracts.
https://preview.redd.it/l8t2m8ldh8e51.png?width=1180&format=png&auto=webp&s=b0a955a0181746dc79aff718bd0bf607d3c3aa23
https://preview.redd.it/26htnxzfh8e51.png?width=1180&format=png&auto=webp&s=d0383d3c2ee836c9f60b57eca35542e9545f741d

Source code

https://github.com/syscoin/?q=sysethereum
Main Subprojects

API

Tools to simplify using Syscoin Bridge as a service with dapps and wallets will be released some time after implementation of Syscoin Core 4.2. These will be based upon the same processes which are automated in the current live Sysethereum Dapp that is functioning with the Syscoin mainnet.

Documentation

Syscoin Bridge & How it Works (description and process flow)
Superblock Validation Battles
HOWTO: Provision the Bridge for your ERC-20
HOWTO: Setup an Agent
Developer & User Diligence

Trade-off

The Syscoin Ethereum Bridge is secured by Agent nodes participating in a decentralized and incentivized model that involves roles of Superblock challengers and submitters. This model is open to participation. The benefits here are trust-minimization, permissionless-ness, and potentially less legal/regulatory red-tape than interop mechanisms that involve liquidity providers and/or trading mechanisms.
The trade-off is that due to the decentralized nature there are cross-chain settlement times of one hour to cross from Ethereum to Syscoin, and three hours to cross from Syscoin to Ethereum. We are exploring ways to reduce this time while maintaining decentralization via zkp. Even so, an “instant bridge” experience could be provided by means of a third-party liquidity mechanism. That option exists but is not required for bridge functionality today. Typically bridges are used with batch value, not with high frequencies of smaller values, and generally it is advantageous to keep some value on both chains for maximum availability of utility. Even so, the cross-chain settlement time is good to mention here.

Cost

Ethereum -> Syscoin: Matic or Ethereum transaction fee for bridge contract interaction, negligible Syscoin transaction fee for minting tokens
Syscoin -> Ethereum: Negligible Syscoin transaction fee for burning tokens, 0.01% transaction fee paid to Bridge Agent in the form of the ERC-20, Matic or Ethereum transaction fee for contract interaction.

Z-DAG

Zero-Confirmation Directed Acyclic Graph is an instant settlement protocol that is used as a complementary system to proof-of-work (PoW) in the confirmation of Syscoin service transactions. In essence, a Z-DAG is simply a directed acyclic graph (DAG) where validating nodes verify the sequential ordering of transactions that are received in their memory pools. Z-DAG is used by the validating nodes across the network to ensure that there is absolute consensus on the ordering of transactions and no balances are overflowed (no double-spends).

Benefits

  • Unique fee-market that is more efficient for microtransaction redemption and settlement
  • Uses decentralized means to enable tokens with value transfer scalability that is comparable or exceeds that of credit card networks
  • Provides high throughput and secure fulfillment even if blocks are full
  • Probabilistic and interactive
  • 99.9999% security assurance within 10 seconds
  • Can serve payment channels as a resilience fallback that is faster and lower-cost than falling-back directly to a blockchain
  • Each Z-DAG transaction also settles onchain through Syscoin Core at 60-second block target using SHA-256 Proof of Work consensus
https://preview.redd.it/pgbx84jih8e51.png?width=1614&format=png&auto=webp&s=5f631d42a33dc698365eb8dd184b6d442def6640

Source code

https://github.com/syscoin/syscoin

API

Syscoin-js provides tooling for all Syscoin Core RPCs including interactivity with Z-DAG.

Documentation

Z-DAG White Paper
Useful read: An in-depth Z-DAG discussion between Syscoin Core developer Jag Sidhu and Brave Software Research Engineer Gonçalo Pestana

Trade-off

Z-DAG enables the ideal speed/security tradeoff to be determined per use-case in the application layer. It minimizes the sacrifice required to accept and redeem fast transfers/payments while providing more-than-ample security for microtransactions. This is supported on the premise that a Reddit user receiving points does need security yet generally doesn’t want nor need to wait for the same level of security as a nation-state settling an international trade debt. In any case, each Z-DAG transaction settles onchain at a block target of 60 seconds.

Syscoin Specs

Syscoin 3.0 White Paper
(4.0 white paper is pending. For improved scalability and less blockchain bloat, some features of v3 no longer exist in current v4: Specifically Marketplace Offers, Aliases, Escrow, Certificates, Pruning, Encrypted Messaging)
  • 16MB block bandwidth per minute assuming segwit witness carrying transactions, and transactions ~200 bytes on average
  • SHA256 merge mined with Bitcoin
  • UTXO asset layer, with base Syscoin layer sharing identical security policies as Bitcoin Core
  • Z-DAG on asset layer, bridge to Ethereum on asset layer
  • On-chain scaling with prospect of enabling enterprise grade reliable trustless payment processing with on/offchain hybrid solution
  • Focus only on Simple Value Transfers. MVP of blockchain consensus footprint is balances and ownership of them. Everything else can reduce data availability in exchange for scale (Ethereum 2.0 model). We leave that to other designs, we focus on transfers.
  • Future integrations of MAST/Taproot to get more complex value transfers without trading off trustlessness or decentralization.
  • Zero-knowledge Proofs are a cryptographic new frontier. We are dabbling here to generalize the concept of bridging and also verify the state of a chain efficiently. We also apply it in our Digital Identity projects at Blockchain Foundry (a publicly traded company which develops Syscoin softwares for clients). We are also looking to integrate privacy preserving payment channels for off-chain payments through zkSNARK hub & spoke design which does not suffer from the HTLC attack vectors evident on LN. Much of the issues plaguing Lightning Network can be resolved using a zkSNARK design whilst also providing the ability to do a multi-asset payment channel system. Currently we found a showstopper attack (American Call Option) on LN if we were to use multiple-assets. This would not exist in a system such as this.

Wallets

Web3 and mobile wallets are under active development by Blockchain Foundry Inc as WebAssembly applications and expected for release not long after mainnet deployment of Syscoin Core 4.2. Both of these will be multi-coin wallets that support Syscoin, SPTs, Ethereum, and ERC-20 tokens. The Web3 wallet will provide functionality similar to Metamask.
Syscoin Platform and tokens are already integrated with Blockbook. Custom hardware wallet support currently exists via ElectrumSys. First-class HW wallet integration through apps such as Ledger Live will exist after 4.2.
Current supported wallets
Syscoin Spark Desktop
Syscoin-Qt

Explorers

Mainnet: https://sys1.bcfn.ca (Blockbook)
Testnet: https://explorer-testnet.blockchainfoundry.co

Thank you for close consideration of our proposal. We look forward to feedback, and to working with the Reddit community to implement an ideal solution using Syscoin Platform!

submitted by sidhujag to ethereum [link] [comments]

Solution Life - New payments solution

Solution Life - New payments solution
Solution Life is an open-source platform that enables to create peer-to-peer marketplace and ecommerce applications.
https://preview.redd.it/ypmpkfwnb6s51.png?width=613&format=png&auto=webp&s=6936dbdd70f1626bb352a426f3b59383b8b8c9cc
Solution Life aims at building a global sharing economy, allowing buyers and sellers to use segments of goods and services (car sharing, service missions, home sharing, etc.) to transact on the open, distributed source web. Using Ethereum blockchain and Interplanetary File System (IPFS), the platform and its participants can interact with the peer-to-peer model, allowing the creation and placement of services and goods without going through traditional middle parties. We plan to build a large-scale commercial network:
• Exchange financial value directly (listing, transactions and service fees) from big corporations like Airbnb, Craigslist, Postmate, ... to individual buyers and retailers.
• Exchange financial value and strategic value (internal aggregation of customer and transaction data) from similar corporations to entire ecosystems
• Create new financial value for market participants who contribute to platform development (e.g. building new technology for the Solution Life platform, developing new vertical products and introducing new users and businesses)
• Build the open, distributed, and shared data layer to promote transparency and collaboration
• Allow the buyers and sellers in the world to transact without difficulty in converting currencies or tariffs
• Promote personal freedom by not allowing a corporation or central government to impose arbitrary and overly conventional rules of business operation. To conduct these ambitious goals, we created the Solution Life Platform with programs that encourage technologists, businesses and consumers to build, contribute, and expand the ecosystem. We plan to build a broad collection of vertical industry applications (e.g. short vacation rental, free software engineering, tutoring) built on standards and data sharing Solution Life. When writing this article, the Solution Life platform is currently in Mainnet Beta. Platform Version 1.0 is expected to be activated in Quarter 3/2020. While the majority of engineering work is being done by the core engineering team, we expect future developments, after launching platform 1.0 from developer, will come to open source community members Together, we will create the Internet economy of the future.
Details of Whitepaper:
• Why is a new model of peer to peer trading necessary?
• Benefits proposed on the Solution Life Platform
• Product strategy, main features and technical overview
• Overview of the Solution Life team and community
https://preview.redd.it/tzepfegpb6s51.png?width=759&format=png&auto=webp&s=62c9933e84e9945b5417591e406390d127fa1070
BACKGROUND
Since the appearance of the Internet, the digital marketplace has connected buyers and sellers of goods and services, allowing transactions that have never happened before. Craigslist launched in 1995 and dominated for many years in local and regional commerce. At the same time, eBay began to grow and create a whole new category of sales based on auction, creating a more efficient way of doing market business. Through 20 years of rapid change, many businesses on the Internet market in both B2C and B2B types have developed strongly. Currently, sharing economy markets such as Airbnb, Uber, Getaround, Fiverr and TaskRmus have been very successful in combining buyers and sellers of the sharing economy. Now, the use of distributed assets can be sold as easily as atomic items, and people around the world are exchanging their excess inventory, time, and skills for profit. New markets including the Gig economy, the service sector and the use of segment assets are particularly suitable to be basis for peer-to-peer systems built on blockchain. Most of the shared economic enterprises have some common points. Firstly, as a collection, these companies have made a big impact on the world. Consumers of the markets were able to improve their lives with access to products and services that they didn't have before. Vendors have been using these platforms to reach customers on a larger and easier scale than before. Each market creates a "private home" for consumers and suppliers to transact together, creating liquidity for that market. Secondly, most sharing economic enterprises follow the same growth cycle. Without a few exceptions, these famous markets are difficult to launch and grow. Enterprises in the market often have to start building with millions of dollars, and in terms of Uber and Airbnb, these two businesses spend billions of dollars to scale. That is also the reason why these businesses suffered serious losses in the early days. In fact, the corporation is subsidizing the use of marketplace for its users. However, due to the very positive cross-network effect, successful marketplace businesses can increase revenue exponentially over time, usually by charging a fee per transaction on the network. Network-effect enterprises, such as share economy market, are often enterprises occupying all directions and growing stage, gaining a disproportionate value from the network for corporation’s management and their shareholders. In many ways, they become the only dictator on the scale they achieve. Finally, although there are huge differences in user experience, business mechanics, and vertical specific features among companies on the Internet market, they all share many parts built and rebuild many times. Lyft, Postmate, and DoorDash themselves has designed their own solutions for user and supplier profiles, shopping experiences, matching algorithms, reviews, and ratings. This is proprietary technology that is valuable on one side. On the other hand, chasing useless things each time creates a new market vertically wasted time and effort. Consumers also create and manage dozens of accounts on these market enterprises themselves, each with their own personal data and transaction history.
In the last few years, blockchain technology innovators and investors have called teams to build peer-topeer versions of businesses in the current sharing economy and to trade the Internet in a more efficient way. P2P lodging sites like Airbnb have already begun to transform the lodging industry by making a public market in private housing. However, adoption may be limited by concerns about safety and security (guests) and property damage (hosts). By enabling a secure, tamper-proof system for managing digital credentials and reputation, we believe blockchain could help accelerate the adoption of P2P lodging and generate.” - Goldman Sachs Research (Blockchain: Putting Theory into Practice) Don Tapscott, the author of the "Blockchain Revolution", said that Bitcoin-based technology could be used to promote the interest in Uber and Airbnb. - The Wall Street Journal "It is difficult for middle parties to achieve sustainable growth in business," [Fritz Joussen] said. "These platforms [tourism middle parties] build accessibility by spending billions of dollars on advertising, and then they generate exclusive profits based on what they have with sales and marketing. They provide great sales and marketing services. Booking.com is a big brand but they make outstanding profits because they own proprietary structures. Blockchain will destroy this. "- Skift However, most of the infrastructure and transmission systems for building distributed-market applications did not exist before Solution Life was born. We aim to address the shortcomings of current market companies and are happy that we have launched the Solution Life Platform, which opens up peer-to-peer commerce with corresponding scale.
📷
ACTIVATE THE OVER THE COUNTER MARKET
Our vision is to build and develop a free service exchange on the new Internet. In order to do this, we have to build a simulation platform of most, if not all, of the functionality of a third-party intermediary on the blockchain and other distribution systems. This is an ambitious and technologically challenging goal, but we have already completed important milestones that demonstrate our technology and the realworld applications of the project. The Solution Life platform has 3 main elements, all of which are open sources:
• Solution Life enabled end user applications
• Solution Life platform for developers
• Solution Life's application protocol
Solution Life enables end user applications The Solution Life flagship marketplace app is our consumer marketplace product that allows buyers and sellers on the network to do business. It is available today on the web at shopSolution Life.com and on both iOS and Android mobile devices.
📷
Summary
For the past two decades, Internet marketplaces and e-commerce stores have changed the way that buyers and sellers connect, creating new opportunities for the exchange of goods and services. However, these marketplaces have always been governed by centralized companies that maintain their individual monopolies on data, transaction and other service fees, and ultimately, user choice. With blockchain and other distributed technologies beginning to hit the mainstream, the world is poised for a new wave of decentralized commerce. SLC is bringing change and innovation to the global peer-to-peer economy. We're excited by the opportunity to lower fees, increase innovation, free customer and transaction data, and decrease censorship and unnecessary regulation. We are building a platform that invites other interested parties including developers and entrepreneurs to build this technology and community with us, altogether working to create the peer-to-peer economy of tomorrow. We hope you’ll join us on this exciting journey.
TOKEN SOLUTION LIFE (SLC)
The Solution Life Token (also known as SLC) is a utility token that serves multiple purposes in ensuring the health and growth of the network. The ERC20 contract is live on the Ethereum network today at:
0x4d44D6c288b7f32fF676a4b2DAfD625992f8Ffbd.
At a high level, this token is intended to serve a number of key functions on the platform. First, the SLC is a multi-purpose incentive token that is intended to drive the behavior of end users, developers, market operators, and other ecosystem participants. Additionally, the SLC is an exchange intermediary that can be used for payments between buyers and sellers on the platform. Ultimately, it is intended that SLC will serve a vital part in future network governance. Since November 2020, the Solution Life token has been used to encourage various forms of participation from the platform's ecosystem participants. Token Solution Life is used to reward users, developers, marketplace operators and / or other participants for performing activities and services conducive to Platform development. Solution Life Rewards Solution Life is an incentive program targeted at end users on the Platform. Buyers and sellers on the platform have been able to earn SLC since our inaugural Solution Life Rewards campaign in Nov of 2020. Solution Life Rewards enables everyone to have a stake in the network. We’ve intentionally designed the program so that even novice, non-technical users can participate. With Solution Life Rewards, users can get SLC from account creation and identity verification. One of the best ways to network is through referrals. As such, end users can also earn tokens by inviting new users. This creates more confidence between the buyer and the seller. Users can also earn SLC by following Solution Life's social networking sites or promoting project news on public channels.
To encourage trading volume on our Solution Life Platform, we also offer a refund mechanism for users who purchase from reputable sellers on our network. Solution Life Commissions Encouraging marketplace developers and managers to use the Solution Life platform is essential. Therefore, we launched an advertising and promotion program, creating an integrated business model for the decentralized marketplace running on Solution Life. Merchants on Solution Life apps can promote their listings using SLCs for greater visibility on search and browse results on our preferred and partner apps. The only way to join this program is to pay with SLC. When a merchant creates a listing, they can add a commission paid in SLC to their listing. This SLC is placed on escrow in the Marketplace Smart Contract.
submitted by slctoken to u/slctoken [link] [comments]

[ Bitcoin ] Technical: Taproot: Why Activate?

Topic originally posted in Bitcoin by almkglor [link]
This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given private key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

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