Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves

Litecoin news and discussion

This subreddit exists to openly discuss [Litecoin](https://litecoin.org). Read the [comparison](http://litecoin.info/Comparison_between_Litecoin_and_Bitcoin) between Litecoin and Bitcoin.
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BCexchange, the decentralized cryptocurrency exchange for everyone

Subreddit for BCexchange (short for ​Blocks & Chains Decentralized Exchange). B&C Exchange will be an open-source decentralized exchange that completes cryptocurrency trades between users by utilizing multisig signers that compete for blockchain rewards based on their effectiveness and honesty. Trades occur using real cryptocurrencies such as Bitcoin and NuBits.
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Bata.io

Bata Currency | Trading Symbol : BTA Cryptocurrency created to replace debt based barter tokens within a blockchain economy. Multi-Algo with Masternodes.
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Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading |

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading | submitted by Deebabitcoinair to Crypto_Currency_News [link] [comments]

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading |

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading | submitted by Deebabitcoinair to cryptonewswire [link] [comments]

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading |

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading | submitted by cryptoallbot to cryptoall [link] [comments]

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading |

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading | submitted by Deebabitcoinair to u/Deebabitcoinair [link] [comments]

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading

Chainalysis Study Finds Roughly 3.5 Million Bitcoin Moves Frequently Between Exchanges for Trading submitted by Deebabitcoinair to cryptocurrencynews [link] [comments]

Hope you guys will like it! Atomic Swap between Bitcoin and Ethereum - no centralized exchange, no server, no KYC. A non-custodial exchange Swap.Online demonstrates a future of all decentralized trades

Hope you guys will like it! Atomic Swap between Bitcoin and Ethereum - no centralized exchange, no server, no KYC. A non-custodial exchange Swap.Online demonstrates a future of all decentralized trades submitted by noxonsu to CryptoCurrency [link] [comments]

BankDex is the first decentralised exchange that solves the transaction problem of cross-chain transfer between di er- ent blockchain accounts in a distributed ledger network. On BankDex traders will be able to trade BITCOIN, ETHEREUM, AND other ERC20 TOKENS.

submitted by horlalehkan to BankdexICO [link] [comments]

BankDex is the first decentralised exchange that solves the transaction problem of cross-chain transfer between di er- ent blockchain accounts in a distributed ledger network. On BankDex traders will be able to trade BITCOIN, ETHEREUM, AND other ERC20 TOKENS.

submitted by horlalehkan to BankdexICO [link] [comments]

I built a trading bot which exploits price-spreads between Bitcoin exchanges

submitted by themammuth to programming [link] [comments]

I built a trading bot which exploits price-spreads between Bitcoin exchanges

I built a trading bot which exploits price-spreads between Bitcoin exchanges submitted by themammuth to Python [link] [comments]

In two days, the situation on the cryptocurrency market has changed: Bitcoin rose to $ 5,000. Trading volumes reached $ 80 billion, this was not even in 2017. Therefore, it is worth watching BITTEAM. Bitteam is a direct cryptocurrency exchange platform between by users. #BitTeam #BTT #tokensale

In two days, the situation on the cryptocurrency market has changed: Bitcoin rose to $ 5,000. Trading volumes reached $ 80 billion, this was not even in 2017. Therefore, it is worth watching BITTEAM. Bitteam is a direct cryptocurrency exchange platform between by users. #BitTeam #BTT #tokensale submitted by Roza_Syckina to u/Roza_Syckina [link] [comments]

Bitcoin mentioned around Reddit: I built a trading bot which exploits price-spreads between Bitcoin exchanges /r/programming

Bitcoin mentioned around Reddit: I built a trading bot which exploits price-spreads between Bitcoin exchanges /programming submitted by SimilarAdvantage to BitcoinAll [link] [comments]

Bitcoin mentioned around Reddit: I built a trading bot which exploits price-spreads between Bitcoin exchanges /r/programming

Bitcoin mentioned around Reddit: I built a trading bot which exploits price-spreads between Bitcoin exchanges /programming submitted by cryptoanalyticabot to cryptoall [link] [comments]

[uncensored-r/Bitcoin] Is anyone here trading between exchanges?

The following post by JohanPomme is being replicated because the post has been silently greylisted.
The original post can be found(in censored form) at this link:
np.reddit.com/ Bitcoin/comments/7lv1n1
The original post's content was as follows:
[removed]
submitted by censorship_notifier to noncensored_bitcoin [link] [comments]

Will Chinese trading and interest in bitcoin continue to grow as a result of cooperation between OTC traders and online exchanges?

submitted by liliiaolivia2017 to Crypto_General [link] [comments]

Trading bitcoin between two country's bitcoin exchanges and two counties' bank accounts.

Hey everyone, I want to know if i'm allowed to do this.
I currently work in Korea but am from the states. I have a base coinbase account which is connected to my american bank. I also have a Korean bank account which I will link to a korean exchange. Now coinbase has it's exchange rate and the korean exchanges closely reflect Mt. Gox. Right now there is about a 20 dollar spread.
I want to know any complications I may have buying coins with dollars with my coinbase account then transfering the bitcoin to my korean bitcoin exchange and then selling them. Then have them deposit it into my Korean bank account and then transfering the money back to my american account and doing it again.
Now i see I will be paying 2% altogether in the currency/bitcoin exchange and then about 30-40 dollars in remission fees for transering won to dollars. I figure if I buy say 10 bitcoin I'll be paying around 80 in fees and then be 120 in profit thats if the current price stays the same on both exchanges. If it goes up when I sell then good for me. Is this correct?
I need to know if i'm allowed to do this and what kind of complications there are. I know that I don't have to pay american taxes as long as I make less than 80,000 a year since i'm working abroad. However, I'm not sure what kind of tax implications there are here in Korea.
Any information or thoughts would be kindly appreciated.
THANKS!
submitted by jinwoonlee to Bitcoin [link] [comments]

Are there any exchanges which interconvert between all the major and minor cryptocurrencies? I have some altcoins I am getting as part of a mining pool, and want to know how to trade them to bitcoin...

Namely, DVC and IXC, with occasional DOGE and Litecoin
submitted by bobthereddituser to CryptoCurrency [link] [comments]

Price difference between exchanges and profitable trading /r/Bitcoin

Price difference between exchanges and profitable trading /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Battlestate Games Needs to update "Rules of the Game"

According to the "Rules of the Game" and TOS for EFT on https://www.escapefromtarkov.com/ there is nothing said about a player not being able to share the wealth. The only place you can find this rule is here on twitter.
BoOsTiNg
Now If you happen to be me I was recently banned falsely for RMT or "boosting". I was not aware that such a rule had existed and unknowingly had broken a rule that was only posted on a social media platform that I do not have. There is nothing on the launcher of the game stating that players cant "share the wealth" and there is no big red text in-game that warns you about "boosting".
Perhaps, they are just scrambling to deal with the cheating situation since RMT results in larger volumes of cheating...good luck playing labs.
I am banned from posting on their forum as a result of this all because I do not have twitter and if I did I was not following them. Someone, please post on their forum that TOS and "Rules of the Game" need to be updated.
This is the RMT statement in the License Agreement from https://www.escapefromtarkov.com/ " Prohibited commercial use: use, either in total or individual parts, of the Launcher Application or of the Game for any purposes not expressly permitted by Battlestate Games Limited, including, among other things: (i) use of the Game in commercial establishments; (ii) collection of game money, items, materials, resources, etc. for sale outside the Game; (iii) provision of game services, such as raising the level, in exchange for payment outside the Game; or (iv) transfer or facilitation of distribution (by text or audio means or any other method) of commercial advertising or offers through or within the scope of the Game"

https://preview.redd.it/gtu3onnxalf51.png?width=1920&format=png&auto=webp&s=28b52a780d63004a15874d33a0ab78466c624d50
Below I will detail the actions that resulted in my ban, and I want to make it very clear that this is NOT AN APPEAL to be unbanned and it is not reposting of previous content except the images. I am explaining the circumstances in which the ToS and "rules of the game" not being updated resulted in a ban. MANY PEOPLE ARE ASKING ABOUT THE EXTENT TO WHICH ITEMS WERE LEANT OR GIVEN SO I AM ADRESSING THAT WITH THE BELOW INFORMATION.
Example 1
July 10th my friend was done playing EFT so he gave me his RR and SICC case

RR and SICC
Example 2 August 3rd
I recently reachout out to my friend in the Army who I had not spoken to in a while and the two of us were going to start grinding tarkov together. He was new to the game and I wanted us to be on the same level with gear, but I still wanted to keep my valuables such as my keys, sicc case, docs cases, dog tag case, Red Rebel and 6 bitcoin to be used for the weapons case trade. The plan was that after I reset my account he would throw me that stuff back. On August 3rd we met on shorline and I gave him my stuff except for the RR because I forgot to put it in my scabbard. On August 4th I gave him my Red Rebel and reset my account immediatley after. Once my account was reset he threw everything I gave him back to me.

Proof of reset

he was a new player lv 4 to be exact
Example 3
On August 5th I leant my friend a blue, green, violet, and black card here. He got cheated on and gave trhe cards back to me 2 hours later. HERE IS THE LINK TO THE BROADCAST https://www.twitch.tv/videos/701225050
Between the times 44:45 and 46:00 you can hear them talking about the borrowed cards. Here is the clip for that https://clips.twitch.tv/CourteousCrepuscularGuanacoNerfRedBlaster

Conversations about borrowing keycards

twitch chat about it
So for anyone who may have questions about circumstances in which the ToS and "Rules of the Game" here is an example of why they need to be updated.


submitted by Schmuckalow to EscapefromTarkov [link] [comments]

Open Marketplace by Particl

Hi fellas, this is my first post on the darknet. I read today about the Empire Market and decided to post here about a tech that might help to end this charade of constant exit scams.
My post is about a DLT-based open source decentralized marketplace that will hopefully initiate a paradigm shift in the free and private trade between individuals and ends the exit-scams and leaky databases problem once and for all.
It is called the Open Marketplace V3.0 and is set to be released after 3 years of hard development work by Particl Project, including one year of public beta testing.
My personal belief is that they are releasing to the world a game-changing/breaking product. At minimum, due to the open source nature of the project, this is a proof of concept that is bound to shift the global eCommerce paradigm into DeCommerce.
I hope my own description below of the marketplace and its technology will fuel your interest to read more about it. My even bigger hope is that some of you will decide to become first-hand beta testers as soon as the Open Marketplace v3.0 hits the testnet (eta: a few weeks).

The marketplace:
The Open Marketplace is designed to be private by default and decentralized with no middlemen/intermediaries whatsoever. The trades are protected by two-way automated escrow via smart-contracts that de-incentivize and penalize dishonest behavior on both sides.
The Open Marketplace takes no sales commissions and charges only a tiny listing fee (<0.01$) to prevent listing spamming. All the marketplace generated fees go to the nodes that provide the hardware infrastructure for the p2p network to operate. The nodes can be public or you can run them as Tor hidden services.
The V3.0 that is set to be released will be the first version open to the wider public. It will allow anyone to create easily a decentralized personal storefront or a community market or simply buy and sell goods on the already existing markets. The user-created markets/storefronts can be visible on the marketplace if the access key is publicly announced or absolutely invisible to anyone that doesn't know the access key (held by the creator). This is an intentional privacy feature and simply put without going into many technical details, if you dont have market access key there is absolutely no way to see/detect that some market exists.
The technology:
The Open Marketplace is crypto-agnostic and currently supports payments in BTC, PART, ZCoin (DAI, NIX are next in the pipeline and many more to come). It uses as a settlement layer its native blockchain, which is an up-to-date Bitcoin codebase with added privacy features like CT, RingCT (up to 32 mixins), Stealth addresses, etc. These privacy features are used in combination to keep the financial data like escrows, transactions, etc private and most importantly un-linkable to the actual market buys/sells.
For the actual user or markets related data exchange like posted listings, buy/sell flows, encrypted user communication, built-in cryptocurrency exchange, etc, the Open Marketplace uses a custom Bitmessage variant called SMSG, which allows metadata stripped encrypted data exchange. Last but not least the Open Marketplace client has a built-in option for using Tor network via proxy.

The important people:
The cypherpunks behind Particl's Open Marketplace have been passionate pioneers and OGs in the privacy DLT field. For example, they were the first ever to implement features like RingCT, Bulletproofs, PoS, cold staking, etc on a Bitcoin codebase. Their privacy features implementations have been audited successfully by several respectable academics and security R&D providers, like QuarksLab.
The team has been so far focused on building without any marketing and thus have remained intentionally in the shadows but the latter is planned to change with the v3.0 release. One of the steps towards that will be the initiation of the long-planned Vendor On-boarding and Outreach Program and the release of the Particl Academy, an easy to understand and learn about the project portal.

Me:
I am a passionate freedom and privacy advocate that discovered the project 1.5 year ago and since then has become a member of their small but like-minded community ([email protected]/discord).
submitted by Bakounin to darknet [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]

Worst Case Scenario, Bitcoin Really Does Go To The Moon, and Beyond. Let's Discuss

This is an entirely hypothetical scenario where the price of btc really does go to the moon, or even beyond in a manner similar to PlanB's stock to flow model.
Phase 1, bitcoin continues to rise in price from its current level of about $12,000. Some in the investing industry take notice and move into btc as a reserve asset, but so far bitcoin continues to remain an asset few are thinking about and fewer are investing in.
Phase 2, the price of bitcoin has risen to $50,000 and what was once one or two corporations investing is now a handful. Bitcoin is now in the news fairly regularly and CNBC now displays a ticker. A few more corporations are investing and the Robin Hood crowd is starting to really take notice. The DXY has dropped from the low 90's to the high 80's. Congress finally passed another round of stimulus and even more people are beginning to seriously discuss UBI as both parties want to do whatever it takes to get into office.
Phase 3, a modest UBI was finally passed subject to yearly congressional renewal. At first, everyone is extremely happy and the economy begins to boom. Stocks are making all time highs again. Covid restrictions begin to greatly ease and the economy is on the mend. Inflation is modest when using the official statistics and nobody is too worried. Perhaps the fans of MMT were right all along.
Phase 4, bitcoin continues to rise. Countries quietly and sometimes not so quietly grumble about both the level of debt the US has, the falling strength of the dollar, and the US's ability to control sovereign nations via the use of the dollar and sanctions. North Korea announces it is going to start mining and accruing bitcoin. The world laughs.
Phase 5, more companies are beginning to move into bitcoin and and price moves about $100,000. The market cap is now 2 trillion and about a thrid of the market cap of gold. Several additional small countries make public that they are mining bitcoin and strategically accruing it at a national level. The DXY begins to inch closer to 80.
Phase 6, the DXY drops below 80. Several small countries announce they are going to being to lower their holdings of dollar denominated treasuries in an effort to diversify risk. Several fortune 500 companies announce they are going to diversify into bitcoin as well. The price of bitcoin quickly rises to $200,000.
Phase 7, China announces that it will no longer hold US treasuries. At first, this seems of no consequence because they had been lowering their holdings for years. The Bank of Japan announces it will continue to buy US treasuries. Many see this as a means of Japan to assure its national safety and the protection of the US. The DXY continues to slowly fall and is now in the high 70's.
Phase 8, several countries now announce that they will allow the use of bitcoin for international trade as it is a perfect medium of exchange between countries. Additionally, many countries are now accruing bitcoin and gold for their national reserves. Bitcoin passes $750,000.
Phase 9, the DXY falls below 75. Countries where the population was holding dollars now see that it has lost a quarter of its value. In a panic they all rush to the only obvious alternative which is bitcoin. The ability to use the lightning network makes it very inexpensive to buy and sell.
Phase 10, the cost of all imports have doubled in the recent months. Everyone is blaming everyone else. Rioting has continued to be a nightly occurrence and has moved into the suburbs as there is little left in the cities to take.
Phase 11, the US blames China for the fall of the dollar and claims they committed an act of war. The US begins to quietly strategically mine bitcoin and to purchase bitcoin as a reserve asset. Talk abounds about another confiscation like FDR did in the 30's.
Phase 12, hundreds of bitcoin millionaires leave the US and acquire passports in other nations. Many are willing to provide a passport if you are willing to maintain a deposit with them of 0.5 btc in one of the local banks.
Phase 13, the US announces that all citizens must trade in 1/2 of their bitcoin holdings in exchange for the current market price of US dollars. People with money on the exchanges and in custodial banks have it taken automatically. Talk circulates about going after people that have their bitcoin in hardware wallets.
Phase 14, the US dollar continues to fall and loses a half of its value again with respect to btc in the last month. Bitcoin now flees the exchanges and banks in an effort to prevent another possibility of a confiscation.
Phase 15, the US has a bank holiday and announces both a digital currency and a peg to bitcoin at a rate of 10 satoshies to 1 dollar. Severe austerity is announced.
...to be continued.
submitted by freebit to Bitcoin [link] [comments]

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