News for hackers. Stuff that matters.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @08:52AM (#29227348)
A crazy thing with Taproot is:

A company could create a virtual bank to handle all transfers with its suppliers by doing a single onchain transaction.

From the outside, it would look like a normal "Someone sent some coins from address A to address B" transaction.

But internally, a key needed to spend the funds is only valid if the company and all of its suppliers sign it.

This means every time there is a transaction between the company and one of its suppliers, the company would send out a signed message with the new spending conditions (the new balance of the company and every supplier) to the supplier network. Everyone signs it and that's it. It does not go on chain.

Only if a participant becomes uncooperative, the latest state will go on chain and everyone will get what they own.

So in the future, two transactions on the Bitcoin chain a few years apart could be "Someone sent something somewhere in December 2021 and then they send something somewhere in June 2025". Or it could be "BMW did ten thousand transactions with its suppliers". You don't know. Both look the same on chain. And all of the transactions were free, instant and possible 24/7.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by pyrale on Monday November 15, 2021 @04:35PM (#29233098)
So basically, does that mean KYC/AML are officially dead in BTC's environment? The picture was not bright before, but with this kind of innovations, it seems impossible for this network to build banking systems that respect regulations.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by ulzeraj on Monday November 15, 2021 @05:27PM (#29233708)
Good riddance. I don't think KYC/AML are a force for good. Its just more box ticking laws that serve to give a false sense of security while poor people are being excluded from the banking system and normal people have their all their data stolen from centralized databases.

Real dangerous criminals don't give a damn about KYC/AML laws and operate freely within the banking framework. The European Central Bank chairwoman is a felon convicted for massive government payouts.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by hn_throwaway_99 on Monday November 15, 2021 @09:02PM (#29235786)
> The European Central Bank chairwoman is a felon convicted for massive government payouts.

Why do people feel the need to deliberately mislead by leaving out all the important details? I had no idea what you were talking about, so I looked it up, it's the second item under https://en.m.wikipedia.org/wiki/Christine_Lagarde#Controvers....

Regardless of your opinions on that particular court case, or the fact that the letter of your statement may be true, do you honestly think "The European Central Bank chairwoman is a felon convicted for massive government payouts" would give the average reader an accurate view of what happen? Because after reading what actually happened, and which IMO comes nowhere near to the deliberate malfeasance you imply, I just conclude that, to put it colloquially, "You're full of shit."

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by trhway on Tuesday November 16, 2021 @05:53AM (#29239098)
>do you honestly think "The European Central Bank chairwoman is a felon convicted for massive government payouts" would give the average reader an accurate view of what happen?

absolutely. Your wikipedia link is absolutely clear :

"the court found Lagarde guilty of negligence"

So, she is a convicted felon for conveniently looking the other way. Some of course may question whether the 400M euro is "massive" these days...

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by luciusdomitius on Tuesday November 16, 2021 @09:16AM (#29240742)
I am also very curious about what exactly is the discrepency here? Which specific part of the original statement is incorrect?

P.s. "My currency is signed by my own private key, yours - by a convicted felon". Whom would you trust more?

P.S. Also, how come you can use such language ("You're full of shit.") and not be banned? Could a moderator take a stance on this one? I don't see the flag button for some reason.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by endofreach on Tuesday November 16, 2021 @06:24PM (#29247544)
You should look up the past of the germanys next chancellor
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by vkou on Monday November 15, 2021 @07:28PM (#29234945)
> Good riddance. I don't think KYC/AML are a force for good

If KYC/AML is not possible in the bitcoin world, you're not going to be getting a world with bitcoin that doesn't have KYC/AML.

You're going to get a world with no bitcoin.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by Mengkudulangsat on Monday November 15, 2021 @08:05PM (#29235280)
Finance without KYC/AML is like air travel without TSA. Everyone remembers those times fondly, but have lost the imagination to believe they are possible again.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by koolba on Monday November 15, 2021 @08:56PM (#29235716)
> Finance without KYC/AML is like air travel without TSA.

The real analogy here is that the ultra rich needn’t deal with the TSA because they fly private.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by RC_ITR on Monday November 15, 2021 @08:29PM (#29235483)
And even more forget why we put those systems into place to begin with.

Just because the response is a bad one doesn't mean that the problem doesn't exist.

FWIW, even if TSA is bad at stopping terrorists, I AM glad that all of these people punching flight attendants are, with certainty c. 1, not packing heat.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by spurgu on Tuesday November 16, 2021 @09:22AM (#29240810)
> FWIW, even if TSA is bad at stopping terrorists, I AM glad that all of these people punching flight attendants are

Seriously, how often does this happen? I've flown a fair amount in my life (in Europe though) and I've never seen any commotion on a plane. I've read about some incidents, but I've read about a lot of fucked up stuff that I'm not concerned about in my life.

It's along the lines with everything these days. Someone does something bad and someone else gets shocked and then everyone wants to stop something like that from happening ever again, through whatever means, without realizing the incredible inconvenience (and complexity) this causes over time when repeated ad infinitum.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by RC_ITR on Wednesday November 17, 2021 @03:02PM (#29258169)
https://www.cnn.com/travel/article/unruly-passengers-faa/ind...

If only 1% of those people were armed, that would still be very very scary!

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by hujni on Monday November 15, 2021 @09:23PM (#29235949)
Is the thought that things like Monero, ZCash, etc., will be eliminated, or that they don't provide the anonymity that people think? What about the CCs that choose to implement Mimblewimble?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by Analemma_ on Monday November 15, 2021 @07:55PM (#29235177)
Good or bad, "no KYC/AML" is not an option. If governments decide Bitcoin can’t provide KYC/AML, Bitcoin will be nuked from orbit.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by csomar on Monday November 15, 2021 @09:42PM (#29236089)
You are over-estimating the power of governments. The last Chinese ban is a good example of how governments might not be able to ban crypto. Smaller economies will have a harder time too.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by largbae on Monday November 15, 2021 @08:36PM (#29235545)
KYC is fine at the edges already wherever crypto meets fiat. That would be the same here right?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by __MatrixMan__ on Monday November 15, 2021 @06:48PM (#29234579)
KYC is up to the exchange to implement. There's nothing stopping them from keeping additional records that aren't on the Bitcoin blockchain in order to stay compliant.

Of course there's also nothing stopping you from sending your coins somewhere with reduced reporting and spending them from there, but then there never really was in the first place.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by coolandsmartrr on Monday November 15, 2021 @08:12PM (#29235347)
It may be dead if you run bitcoind or your own wallet, but the majority of users would avoid the complexity of running your own wallet and instead use an exchange to obtain Bitcoin. Opening an account at an exchange would enforce KYC/AML rules anyways, as the operators have to compliant of local laws (which are usually based on guidelines by FATF, a global financial regulation group).
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by baby on Monday November 15, 2021 @04:47PM (#29233223)
BTC is not built to support KYC/AML.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by bigdubs on Monday November 15, 2021 @04:55PM (#29233321)
Then it's going to be weaponized to launder money and be made illegal eventually.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by k20CuozQmk on Monday November 15, 2021 @06:47PM (#29234567)
>and be made illegal eventually

Allocation of resources to try and ban cryptocurrency (or encryption in general) is probably one of the dumbest things ever conceived, probably even more so than the drug war.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by wruza on Tuesday November 16, 2021 @01:32AM (#29237547)
Regulators don’t have to ban cryptocurrency use among citizens, they only have to ban/overtax everyone trying to cash it out or to run a legal business in it, to reduce liquidity to a level when it’s more risky or expensive than regular laundering. Cryptokids may then play their encryption penny as usual.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by michaelmrose on Tuesday November 16, 2021 @02:39PM (#29245410)
It's entirely easy to make crypto legally useless for legal transactions. The fellow making you coffee won't take crypto if he can only use it to buy drugs. This doesn't mean it will happen but conflating encryption and crypto is poorly considered because we have a long history of regulating commerce.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by baby on Monday November 15, 2021 @04:58PM (#29233366)
That's an argument that has been made yes.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by throwaway55421 on Monday November 15, 2021 @05:54PM (#29234018)
There is no future tense here.

Bitcoin is designed to be fungible - it's digital cash.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by MerelyMortal on Monday November 15, 2021 @07:49PM (#29235115)
Maybe it was "designed to be", but in reality it isn't.

BTC has a history, so if I had 1 BTC, and you had 1 BTC, they wouldn't be equivalent.

When you deposit BTC into a Coinbase account from a gambling site, CB shuts down your account. That is irrefutable proof that BTC is not fungible.

Compare it to cash which is fungible. If you win money at a casino and deposit it at a bank, the bank doesn't know where you got the cash from.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by rabite on Monday November 15, 2021 @08:17PM (#29235394)
> If you win money at a casino and deposit it at a bank, the bank doesn't know where you got the cash from.

You're off base here. There's serial numbers on money and many databases maintained both public and private meant to track those and flag inflows of marked bills. The bank absolutely might know where you got the cash from -- the difference is that there are legal guarantees for the fungibility of cash. It is enforced by law that if someone pays you a dollar, you are legally obligated to accept that as tender. For all debts both public and private.

The fungibility of the dollar is not rooted in lack of ability to track dollars, it is rooted in state violence.

Anyways everyone should use Monero. BTC is obviously far less fungible than a dollar.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by MerelyMortal on Monday November 15, 2021 @10:04PM (#29236252)
You're right about dollars being only legally-fungible. It's been hypothesized that there are databases tracking when and where dollars are used based on serial numbers, but to my knowledge, there hasn't been any reliable confirmation of that. If there is such a database, at least it's not publically available like Bitcoin's is. So, I agree with you that Monero should be used over Bitcoin (disclaimer, I own some XMR).
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by wayoutthere on Monday November 15, 2021 @06:42PM (#29234526)
The banks themselves launder money for organized crime. Why shouldn’t money laundering be available to the masses too?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by wruza on Tuesday November 16, 2021 @01:35AM (#29237566)
It’s available. You just can’t enter the monopoly.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by danlugo92 on Monday November 15, 2021 @08:54PM (#29235706)
Good old "private banking services".
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by can16358p on Monday November 15, 2021 @07:01PM (#29234714)
Banks and governments*
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by stale2002 on Monday November 15, 2021 @07:09PM (#29234783)
There are a multitude of other crypto coins, that have been around for a long while, that similarly provide lots of privacy, and yet they aren't illegal.

People have been yelling about this all being made illegal for literally a decade, and it hasn't happened yet.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by XorNot on Monday November 15, 2021 @11:39PM (#29236925)
Why would any of this be made illegal? It's a jurisdictional enforcement issue, that isn't targeted at the asset - it's targeted at the individual who thinks they're going to make large financial transactions and not meet the KYC requirements - which will come up when you have to declare how you attained a whole lot of assets or cash to the IRS.

Of course, you could not do all those things...but it would be just as illegal and lead to you being just as in jail (and your assets seized) as it would for any other currency.

So sure: technically you can hide a bunch of stuff with BTC, but you can do that with USD just fine too (cash is pretty untraceable). The moment you get caught though, you're just as screwed.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by stale2002 on Tuesday November 16, 2021 @12:15PM (#29243231)
> Why would any of this be made illegal?

Of course crypto privacy features are not going to be made illegal. That was my entire argument. Crypto has been around for a decade, and lots of privacy coins exist, and are not illegal.

Therefore, other crypto features that make KYC more difficult are also not going to be made illegal.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by vb6sp6 on Monday November 15, 2021 @05:20PM (#29233635)
> Then it's going to be weaponized to launder money

We should stick with USD. No one does anything illegal with USD

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by phone8675309 on Monday November 15, 2021 @08:12PM (#29235353)
Holy fucking strawman, Batman!

Way to skip over the different potentials for abuse and just dive to the cryptonerd's handwaive argument.

Looking forward to your insights about rubber and glue.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by vb6sp6 on Monday November 15, 2021 @09:33PM (#29236018)
"bitcoin is for illegal things" is the OG handwaive argument so nothing substantial was needed to swat it down :)
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by phone8675309 on Tuesday November 16, 2021 @08:38AM (#29240398)
There you go strawmanning again.

The claim wasn’t "BitCoin is for illegal things (and by comparison, USD is never used for crime)", it was "BitCoin's lack of support for KYC makes it more likely to be attractive to criminals and therefore likely to have its use criminalized" which you CAN'T just hand waive away.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by vb6sp6 on Tuesday November 16, 2021 @09:25AM (#29240871)
I can trade stacks of USD without any KYC.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by mikevm on Monday November 15, 2021 @05:41PM (#29233887)
Yes, which is why all ransomwares ask money in USD, right?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by skeaker on Monday November 15, 2021 @05:49PM (#29233967)
Your point being what? That because USD is uncommonly used in ransomware it can't be used to commit crimes? Do you really think that no extortion has ever taken place via USD? Because I can guarantee you that money-related crimes and scams happen in just about every single form of currency, even things that technically aren't even currency like gift cards.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by aron_misj on Monday November 15, 2021 @05:54PM (#29234024)
> ransomwares

this is not even worth looking at compared to other money-related crimes (just new and in media so people are scared)

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by webinvest on Wednesday November 17, 2021 @10:22AM (#29254238)
BTC is less anonymous than cash.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by aron_misj on Monday November 15, 2021 @05:52PM (#29233995)
> launder money

means different things in different places

> made illegal

it's already illegal here and there

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by Macha on Monday November 15, 2021 @06:46PM (#29234562)
You could even go further:

BTC is built to not support KYC/AML.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by luciusdomitius on Tuesday November 16, 2021 @09:12AM (#29240710)
Have those regulations ever made any sense? If someone is involved in illegal activity, then prosecute him for that. Banks' purpose is to manage wealth, not to be policemen.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by 323 on Monday November 15, 2021 @09:54AM (#29228072)
BMW and it's suppliers have zero problems moving money today.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by lancemurdock on Monday November 15, 2021 @06:48PM (#29234586)
try not to focus on the alice and bob portion of the explanation
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by anonporridge on Monday November 15, 2021 @04:47PM (#29233224)
People had little problem with transportation when all they had was horses and sailboats.

Just because you don't technically have a problem doing something now and no one is complaining, doesn't mean there's not a drastically more efficient way to do the thing, and those organizations that start doing the more efficient thing rapidly out compete and make irrelevant those who hold onto the legacy ways.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by loceng on Monday November 15, 2021 @05:40PM (#29233879)
Bitcoin is the horse and buggy in this comparison - while attempting to naively remove control possibilities and making it "trustless" aka a free for all/wildwest where nations can't use financial levers to try to economically punish known bad actors, e.g. Magnitsky Act.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by ashwagary on Monday November 15, 2021 @06:36PM (#29234453)
>where nations can't use financial levers to try to economically punish known bad actors, e.g. Magnitsky Act.

Probably unknowable but I wonder what has caused more damage to the world, financial crimes or centralized financial levers being used to steal the time/savings/wealth of 8 billion people and redistribute it to a small group of people.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by loceng on Tuesday November 16, 2021 @05:47AM (#29239069)
Most of that wealth occurred through policy layers, corruption within systems, or bruteforce/violence - not because there's a financial-transactional later.

Also,

- $1.9B in crypto currency stolen by hackers last year [that's known about/reporter]; https://www.securitymagazine.com/articles/94627-19b-in-crypt...

- Bitcoin extortion: How cryptocurrency has enabled a massive surge in ransomware attacks (Crypto revenues from ransomware surged more than 300% in 2020 from the year before) - https://www.marketwatch.com/story/bitcoin-extortion-how-cryp...

How does that criminal activity keep scaling? And you do you think criminal enterprise won't target to infiltrate organizations who hold large amounts of Bitcoin et al to infiltrate to steal the keys to the vault? Then the only way to counter that is centralized database/service to check all transactions through to make sure the funds didn't originate from criminal activity, and then centralized authority for enforcement, etc.

Bitcoin Maximalists or crypto-"currency" enthusiasts skip over, don't respond to such criticism as it doesn't fit into their glossy propagandist narratives that Bitcoin etc al are godsend - they keep the scope of conversation and talking points narrow or cordoned off - which is super obvious with most Bitcoin spokespeople, though the most popular are intelligent ideologues who speak beautifully, poetically, in inspiring way that's motivating - but still lacks the rigor of challenge by peer confrontation; Jordan Peterson recently had a popular Bitcoiner on to speak, it's good he's diving deep into it, let's hope he doesn't get too indoctrinated into an imbalanced/out of balanced doctrine spread by financially motivated individuals; imagine if being part of a religion and proselytizing was financially advantageous - where the earlier on you're in on the pyramid (with contributions to the church to "show your commitment") lead to a potential windfall or promise of such if and once everyone in the world is part of that religion/cult.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by anonporridge on Monday November 15, 2021 @05:50PM (#29233982)
I think it's a grand experiment.

Perhaps the primary output of bitcoin will be that it lights a fire under the lazy ass of government to actually have a service mindset towards people, because they now have an alternative that they can use however they want.

We'll see.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by loceng on Tuesday November 16, 2021 @05:27AM (#29238948)
Yes, I agree with you - it's likely been a necessary mechanism as a counterweight to the current corruption and lack of integrity in the system.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @09:57AM (#29228113)
How do you know?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by 323 on Monday November 15, 2021 @10:07AM (#29228247)
Because there are no articles about big companies having money transfer problems with their suppliers.

The complains are about the "buy now pay 90 days later" part, not about the actual money transfer.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @10:28AM (#29228509)
How hard did you try to find such articles?

I would imagine the suppliers of Wirecard do see it as a problem that the $2B WireCard said it has in the bank did not exist. In a blockchain setup, they would have known it.

Ducking for "supplier" and "insolvency" brings up quite a lot of stuff about this topic:

https://duckduckgo.com/?q=insolvency+suppliers

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by 323 on Monday November 15, 2021 @10:38AM (#29228613)
Supplier insolvency has nothing to do with money transfer.

And if you think that you can "lock bitcoin" into an account to avoid this, you obviously don't know much about how these things work. Hint: you can also "lock dollars" today, it's called "escrow". But it wasn't used in WireCard (I take your word for it, I don't know the case).

Explained like I'm five: BMW will not accept it's bitcoin being locked for 90 days, so that it's supplier can be sure it will receive it's pay. Because if BMW would have accepted such a thing, it would pay today, not 90 days later. So crypto doesn't solve any problem here, because BMW doesn't want this problem solved.

And today, the supplier would use "factoring" so that it can receive the money instantly, instead of 90 days later, and the bank which provides the factoring service will make sure to take it's money from BMW later. Hint: you need capital to be able to provide factoring, since it involves credit risk, so crypto can't replace that either directly (it could with some fancy smart contracts that pool liquidity and yield)

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @11:02AM (#29228920)

    BMW will not accept it's bitcoin
    being locked for 90 days
The way I see the future, BMW will not only lock their Bitcoin for 90 days but much longer. And not only the Bitcoin they owe to one supplier. But a large portion of their Bitcoin. Aka their virtual bank account. They can still use their account however they like. But if one of their suppliers feels that the balance goes dangerously low, the supplier can block further spending or settle everything.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by johnday on Monday November 15, 2021 @11:17AM (#29229106)
Surely suppliers want to be paid? Accumulating a huge pile of IOUs is of zero benefit to someone who has actual real-world costs, such as taxes, payroll and capital outlays.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @12:02PM (#29229587)
What do you mean by "be paid"?

Usually, one is "paid" when "the money is in the bank", right?

And this is what happens here. The initial step is to create a bank and then "payments" happen there.

As for how to pay someone who is not "customer" of this bank, see my answer to this question:

https://news.ycombinator.com/item?id=29227788

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by jessaustin on Monday November 15, 2021 @03:50PM (#29232536)
Lots of firms, especially those whose value is based partially on "predictable" profits, want to schedule payments in Q2 rather than Q1.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by danlugo92 on Monday November 15, 2021 @09:06PM (#29235815)
Lightning transactions are final. Anything else is FUD.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by beaner on Monday November 15, 2021 @06:41PM (#29234505)
I've heard stories about the difficulty about payments at AirBnB, where the suppliers are local people across the globe in different languages with varying levels of access to financial services. It's one of the things that inspired the Coinbase founder, who was an ex-AirBnB employee, to start his company.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by x86_64Ubuntu on Monday November 15, 2021 @10:30AM (#29228528)
And Net X(Net 90 in your case) is part of business, so it' not going away because of a blockchain.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by danlugo92 on Monday November 15, 2021 @09:05PM (#29235803)
What about Venezuelan or Iranian companies?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by coralreef on Monday November 15, 2021 @10:08AM (#29228263)
Tesla didn't like paying banks to store its money in Europe via negative interest rates, so they moved in into Bitcoin.

https://www.techtimes.com/articles/263185/20210721/elon-musk...

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by 323 on Monday November 15, 2021 @10:10AM (#29228283)
That has nothing to do with transferring money.

Tesla also holds bonds and other stuff that pays a dividend.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by teekert on Monday November 15, 2021 @09:10AM (#29227558)
"And all of the transaction were free", Wait? Since when are transactions free and instant? Is that part of this upgrade? The only costs are with the "bank transaction"?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @09:18AM (#29227648)
A second layer transaction does not involve the Bitcoin network.

When Katy wants to pay ₿3 to Billie, Katy just sends a key (via email or some API) to Billie which enables Billie to withdraw ₿3 from the account of Katy. But Billie does not do that. Billie just keeps that message like you keep your login to your bank account.

When Katy wants to pay another ₿5 to Billie, Katy sends a key to Billie which enables Billie to withdraw ₿8 from the account of Katy.

Now Katy paid Billie ₿8 in two transactions. All via email, letter, telephone or - most likely - API. Nothing at all happened on the Bitcoin network.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by piaste on Monday November 15, 2021 @09:37AM (#29227881)
However, if nothing happens on the Bitcoin network, then the funds aren't locked down, are they?

In other words, Billie has no guarantee that the key she holds will be valid tomorrow; Katy could empty that account at any time, and Billie would then hold nothing except the evidence of Katy's wrongdoing.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by kordlessagain on Monday November 15, 2021 @12:10PM (#29229683)
Bitcoin supports post dating transactions. The transaction can be updated between parties, off chain. Lightning Network. If a bad actor gets involved, the last transaction updated between both parties rules and is the remainder is refunded upon the timeout of the post dating.

This function is provided by script: https://en.bitcoin.it/wiki/Script

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by gruez on Monday November 15, 2021 @10:26AM (#29228483)
> However, if nothing happens on the Bitcoin network, then the funds aren't locked down, are they?

they are locked down. the funds in a lightning channel are locked in a 2 of 2 multisig address, and can only be moved upon mutual consent (ie. by updating the state of the channel), or by one party after sufficient time has passed (in case of an uncooperative peer).

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by PKop on Monday November 15, 2021 @03:35PM (#29232342)
What do these LN dynamics (which seem to have existed for a little while already now) have to do with Taproot?

OP was describing something in the context of Taproot and now you and others are talking about Lightning. What is the new development here?

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by G3rn0ti on Monday November 15, 2021 @05:05PM (#29233443)
Roughly, Taproot will make Lightning Transactions much more efficient and indistinguishable from simple transactions by introducing a new „Pay-To-Taproot“ validation type.

https://blog.chainalysis.com/reports/bitcoin-taproot-upgrade

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by louloulou on Monday November 15, 2021 @05:01PM (#29233404)
Lightning channel opens/closes are 2-of-2 multisig transactions. Taproot would make them indistinguishable from singlesig transactions.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by pkulak on Monday November 15, 2021 @04:27PM (#29232997)
Whoa now, how did we start talking about lightning? Has it been lightning all the time? Because that's always supported instant, near-free transactions (with a _bunch_ of problems too, that I'll not worry about).
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by kordlessagain on Monday November 15, 2021 @05:54PM (#29234026)
> In parallel to that, we plan to use Taproot’s new “tapleaf” script versioning scheme to implement Simplicity, our upcoming blockchain programming language.

https://medium.com/blockstream/taproot-activation-enhanced-t...

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by tgb on Monday November 15, 2021 @03:29PM (#29232278)
Does this stop a double spend?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by gruez on Monday November 15, 2021 @03:42PM (#29232432)
Yes, why wouldn't it? The funds are locked in a 2 of 2 multisig address.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by tgb on Monday November 15, 2021 @04:21PM (#29232927)
I'm confused then, doesn't this still need one transaction in the block chain for every transaction?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by HashBasher on Monday November 15, 2021 @04:45PM (#29233206)
No, the transaction is fully signed and can be broadcast at any time by either party to settle. It doesn't have to be broadcasted and further transactions can be done on top and they just keep it private between themselves.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by tgb on Monday November 15, 2021 @05:33PM (#29233782)
I'm missing how you can have a transaction that is not broadcasted but that prevents a double spend. Can't I give two different people signed transactions for the same bitcoins? How could the second recipient know I've already spent the balance on the first? Apologies for the no-doubt naive questions, it just sounds impossible.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by jallen_dot_dev on Monday November 15, 2021 @07:50PM (#29235128)
There would first be 1 broadcasted on-chain transaction setting up the channel, with X of my bitcoin and Y of your bitcoin being locked up. This prevents double spend. Then, you and I pass n signed transactions between each other updating our balances Xt & Yt for each t, t+1, ...t+n. At any time, either one of us can broadcast the final transaction with the most up to date balance and unlock the coins.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by tgb on Monday November 15, 2021 @09:31PM (#29236006)
So it requires one on-chain transaction per pair of parties instead of one per transaction? Clever and I suppose useful but seems a little limited in use, given that the funds are locked the whole time. Good for two parties that frequently have transactions going in both directions?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by jallen_dot_dev on Monday November 15, 2021 @09:43PM (#29236102)
That's right. You can also form a chain of these channels, so Alice can pay Bob even though she doesn't have a channel with him, if they both connect to Carol using atomic transactions that update the 2 channels accordingly.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by Jeff_Brown on Monday November 15, 2021 @05:51PM (#29233989)
Is it that the not-on-the-Bitcoin-blokchain account gets updated on a separate "layer 2" Blockchain that's cheaper? If so, why would that second chain stay cheaper?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by danlugo92 on Monday November 15, 2021 @09:07PM (#29235830)
Lightning transactions are all final and irreversible via cryptography mechanisms.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by danlugo92 on Monday November 15, 2021 @09:01PM (#29235784)
Theres a timelock enforced by the blockchain.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by zaptrem on Monday November 15, 2021 @12:04PM (#29229615)
Don't LN channels require a (quite expensive) transaction to open and close?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by gruez on Monday November 15, 2021 @12:43PM (#29230098)
>quite expensive

Are you talking about compared to regular transactions, or because network fees (per byte) are high?

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by jimmydorry on Monday November 15, 2021 @07:50PM (#29235129)
Quite expensive, as in $1?

That $1 enables as many transactions as you want between party A and B, of which party B may have dozens of open channels with other nodes to facilitate routing from party A to C etc.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @09:42AM (#29227931)

    Katy could empty that account at any time
That would be a pretty lame virtual bank then :)

Realistically, the spending conditions are either limited by time. So Billie knows she needs to withdraw until a certain date or Katy could betray her. Or the spending conditions contain a punishment for betrayal. So if Katy tries to withdraw money she assigned to Billie, Billie can intervene, get her money and punish Katy.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by KptMarchewa on Monday November 15, 2021 @09:33AM (#29227837)
Can you send 8worthless$ using that method, then move money out of the account via normal transfer?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by gruez on Monday November 15, 2021 @10:27AM (#29228492)
no, because the funds are locked down while in the lightning channel. see: https://news.ycombinator.com/item?id=29228483
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by cgb223 on Monday November 15, 2021 @06:50PM (#29234601)
> VIA email or API

Isn’t this an example of a centralized bottleneck?

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by G3rn0ti on Monday November 15, 2021 @09:47AM (#29227996)
Parent talks about the „Lightning Network“ — a Layer 2 scaling solution for Bitcoin. Beware: I am still a crypto noob but I am still going to try to explain how I understood the system so far. Edited: Minor terminology and typos.

Roughly speaking the Lightning Network works similar to a „current account“ that businesses have between each other but does not require the actors to trust each other. The parties initiate a transaction by each one sending Bitcoin to a public multi signature address. The resulting transaction cannot be spent by any one alone. Now, this unspent transaction serves as an initial balance and opens a channel between the parties on the layer 2 network. Bitcoin may now be wired back and forth between the parties on layer 2 w/o needed to be settled individually on the Bitcoin block chain. Finally, if all parties agree by signing a second, settling transaction the resulting balance is written back to the Blockchain to whatever address the participants initially agreed upon. Theoretically, there could have been billions of Bitcoin transactions over the years on the Lightning Network which would be eventually represented by only two transactions on the chain.

Now, taproot improves this scheme by introducing Schnorr signatures. Up to now every member of the multisig transaction I just talked about needed to contain the public keys of all parties which in turn needed to be verified against all their private keys. Since transactions are limited in their size, this limited the applicability of multisig transactions. Now, Schnorr signatures allow for aggregation of public keys so the transaction only needs to contain a single number instead of hundreds or thousands. Of course, this also speeds up validations of transactions.

I hope this all made sense. I have yet to see practical applications of a Lightning Network „scheme“ but I heard El Salvador is using it for cheap Bitcoin transactions (although not applying Schnorr signatures yet).

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by nybble41 on Monday November 15, 2021 @05:48PM (#29233958)
The other half of the Taproot update besides Schnorr signatures is support for MASTs: Merklized Abstract Syntax Trees. This allows you to create scripts (smart contracts) where only the used part of the script needs to be revealed when the funds are transferred. Other parts which were not used—for example, the clauses related to recovering funds in the event of a non-cooperating peer in a Lightning channel when the channel is closed normally—need not be included in the transaction, which both improves privacy and reduces the transaction size (and thus also the fees).
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by UncleEntity on Monday November 15, 2021 @06:33PM (#29234420)
So, basically, a dead code elimination scheme?

I do wonder how it could ensure the code running is the actual code signed for as its hash would be different though.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by nullc on Tuesday November 16, 2021 @12:50AM (#29237342)
Because the code is rearranged into a top level arbitrary tree ORs and the hashing commits to this tree.

At signing time, the signer reveals a hash for every non-taken branch, so that the commitment still checks that leaf being executed was an admissible one.

The dead-code elimination goes further than that, because at the top level this hash root is hidden inside a public key which can be a key controlled by all the participants jointly (or some subset if appropriate). At signing time if these top level parties are available and cooperate they can just sign, and no script is ever revealed, it's impossible for third parties to tell it was ever there-- saving resources and preserving privacy.

(And the possibility to complete the transaction using the script means they don't gain from failing to cooperate)

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by space_rock on Monday November 15, 2021 @03:44PM (#29232454)
"Bitcoin may now be wired back and forth between the parties on layer 2 w/o needed to be settled individually on the Bitcoin block chain." Cooperatively update the final state would be more precise. And if one party is uncooperative then a timeout contract becomes valid. Your understanding is generally correct. Also bitcoin doesn't use the word crypto which is closely associated with scams. Bitcoin is about the 21 million coin limit so only one currency not cryptocurrencies.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @09:55AM (#29228100)

    Parent talks about the „Lightning Network“
I was not talking about the Lightning Network in particular. The LN is a system that does settlement on the Bitcoin blockchain.

So is the "BMW and its suppliers" network I imagined. But this network is simpler and more customized to the needs of this particular use case.

Of course using the LN would be a viable alternative to a custom solution.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by G3rn0ti on Monday November 15, 2021 @10:02AM (#29228182)
I see, so in principle, taproot would facilitate to set up custom scaling solutions for Bitcoin payment schemes.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by spurgu on Tuesday November 16, 2021 @09:45AM (#29241078)
Perhaps a simplification to this would be a poker night, where at the beginning of the evening everyone puts in some real money and in return get poker chips. At the end of the night people can exchange whatever chips they have left for real money.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by tromp on Monday November 15, 2021 @09:17AM (#29227642)
> the latest state will go on chain

You'll need to have a revocation mechanism to punish older states being put on chain. That may not be so simple when (many) more than 2 parties are involved.

> Or it could be "BMW did ten thousand transactions with its suppliers". You don't know.

Amounts are still visible as well as number of entities paid by the settlement. Recipients may become identifiable through follow-up transactions or re-use of known public keys.

> And all of the transactions were free

All but the initial funding tx and the final settlement tx.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @09:23AM (#29227717)
Yes, it will probably take years before we all settle on standardized ways of doing these things. But in theory, they are possible now.

Yes, the initial tx and the final tx will provide data for forensic analysis.

Yes, the initial and final tx need some time to settle (something like an hour) and cost some money (something like a few dollars at current rates).

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by cgb223 on Monday November 15, 2021 @06:48PM (#29234577)
So if I’m a single supplier and I want to act as a hostile actor in order to negotiate better terms or something, does my refusing to sign mean that _all_ supplier transactions are reversed or at least slowed on chain? Is there an actual attack surface here?

Also, if I’m adding a new supplier in this example, do I have to spin up an entirely new “virtual bank” to do so? Or can I just add them to the current one? What is the user experience there?

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by polyomino on Monday November 15, 2021 @07:15PM (#29234827)
This is a new fundamental building block that would help make these types of scenarios possible. However, by the time end users get an implementation, it will likely be more complicated than a single transaction for the reasons you mention and others.

Also note, as exemplified by altcoins it is always possible to trade off decentralization or security for more features.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by danlugo92 on Monday November 15, 2021 @08:58PM (#29235740)
You will open a virtual bank with one of the big nodes, say Binance, and they will handle the rest.
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by m3kw9 on Monday November 15, 2021 @07:04PM (#29234737)
He’s talking about lightning network with multisig support, which I thought they always had, only that with taproot a multi signiture can be combined as one, which would look like a single person signed it
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by lalaland1125 on Monday November 15, 2021 @05:36PM (#29233815)
How is this different from the lightning network?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by pshc on Monday November 15, 2021 @07:01PM (#29234708)
It sounds quite similar except it hasn’t solved the problem that Lightning has—participants can broadcast old states to rewind history.

Probably should just use Lightning instead?

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by kjrose on Monday November 15, 2021 @09:29AM (#29227788)
How does this handle someone spending bitcoin outside of the virtual bank?
Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by TekMol on Monday November 15, 2021 @09:39AM (#29227900)
Different approaches come to mind.

One is that one of the participants is a virtual bank on its own. This would be similar to the old banking system. How do you send money to someone who uses a different bank? By telling your bank to talk to their bank.

Re:Taproot, Bitcoin’s long-anticipated upgrade, has activated by mrfusion on Monday November 15, 2021 @07:22PM (#29234896)
Would that be useful for privacy too?