bitcoin should prepare now, even if quantum is 'lab experiment,’ adam back says back said the safest approach is to build optional upgrades that would allow bitcoin to migrate to quantum-resistant cryptography once its needed. #blockstream ceo adam back says #bitcoin should prepare for #quantum threats now despite calling current systems "essentially lab experiments." after following quantum computing for 25+ years, back still sees the #threat as 20-40 years away - today's quantum computers are "slower than calculators." his solution? build optional upgrades allowing migration to quantum-resistant #cryptography when needed. blockstream runs a dedicated quantum team researching threat vectors and testing hash-based signatures on liquid network. #taproot could support alternative signature schemes without affecting current users. "making changes in a controlled way is far safer than reacting in a crisis," back told paris blockchain week. however, #google's recent research showed quantum computers could crack bitcoin in 9 minutes - much faster than expected. meanwhile, a controversial bip-361 proposal to freeze quantum-vulnerable bitcoin (including satoshi's $81.9b stash) drew backlash as "authoritarian and confiscatory." #VrReports