How does Bitcoin defend against quantum computers? This technical solution might be the answer.

Question

【Blockchain Movement】Recently, I came across a quite interesting study. Two researchers from Blockstream updated a paper on December 5th, discussing how to use hash-based signature techniques to counter quantum computers — considering that there are currently $1.8 trillion worth of assets on the Bitcoin chain that need protection.

Why is this solution reliable? Because its security is entirely based on hash functions, which are actually a fundamental part of Bitcoin’s underlying design. More importantly, when NIST (National Institute of Standards and Technology) in the US was working on post-quantum standards, they already subjected this scheme to extensive cryptographic analysis. After multiple rounds of review, it still holds up, indicating that this technology is indeed robust.

However, the real danger lies with old wallets. Addresses created before 2012, such as Pay-To-Public-Key types — including Satoshi Nakamoto’s own holdings of $9.8 billion — are collectively locking up about $600 billion worth of Bitcoin. Once quantum computers mature, these addresses will be the first to face threats. It seems that technological upgrades really need to be planned ahead.

MEV_Whisperer · Accepted Answer

Hash signature quantum resistance? Sounds good, but I'm just worried it's all talk and no action.

When will the folks at Blockstream actually put their stuff on the chain to test?

1.8 trillion is indeed impressive, but those hidden dangers in old wallets should have been dealt with already.

NIST endorsement is somewhat useful, but I'll wait until it's officially implemented before trusting it.

AllTalkLongTrader · Answer

Hash signature against quantum? Sounds awesome, but I don't know how long it will take to actually get on the chain.

If this can really be implemented, those ancient wallets will truly be given a second chance.

NIST endorsement definitely adds points, but somehow upgrading seems even more difficult than the technology itself.

This is a matter of 1.8 trillion USD, no margin for error.

Back in 2012 or earlier, who could have imagined the quantum threat? Truly remarkable.

WhaleSurfer · Answer

Hash signatures resistant to quantum? Sounds plausible but still a bit uncertain. I'm really worried it might get cracked again someday.

GateUser-44a00d6c · Answer

Hash signatures resistant to quantum? Sounds good, but I'm still a bit worried. Can the old wallet really be changed?

SoliditySurvivor · Answer

Hash signatures are aligned with post-quantum standards, sounds reliable but still depends on implementation

Old wallets are the real bombshell, that's where the urgency lies

$1.8 trillion is hanging in the balance, gotta act quickly

NIST has already tested it, can it still fail? Hard to understand

Quantum technology has been hot for two months, why haven't we seen any action yet

MEVHunterX · Answer

Hash signature resistant to quantum? Sounds good, but the real problem lies in old wallets, which is the real headache.

ContractBugHunter · Answer

Hash signature anti-quantum? Sounds good, but the old wallets are indeed a ticking time bomb.

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NIST has already approved it, so what other issues could there be? It all depends on how the ecosystem implements it.

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$1.8 trillion is tied up in this; only if a serious problem occurs would it be truly disastrous.

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Sounds nice, but ultimately it depends on whether major players cooperate during the mainnet upgrade.

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Those addresses from 2012 are indeed frightening; perhaps no one remembers the keys anymore.

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Hash-based schemes are nothing new; even Blockstream's proposals are just like that.

MEVictim · Answer

Hash signature against quantum? Sounds good, but the real bomb is in the old wallets, right?

TrustMeBro · Answer

Hash signature defense against quantum computing? Sounds good, but I'm still a bit skeptical, after all, I haven't experienced a large-scale attack firsthand.

Old wallets are the real bombs, those ancient Bitcoins are sleeping very soundly.

NIST endorsement definitely adds points, but the post-quantum aspect still feels like somewhat of a forward-looking plan.

$1.8 trillion needs to be well protected, or it'll all really be gone.

This technical approach is reliable, but the key still depends on how quickly it can be implemented.

How does Bitcoin defend against quantum computers? This technical solution might be the answer.

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