Quantum Breach Risk Looms as Blockchain Networks Race Toward Post-Quantum Security thecurrencyanalytics.com
More quantum-kills-Bitcoin recap, with the only fresh bit being how awkward PQC migration looks for live chains.
4 comments
> the awkward PQC migration looks
Is this mostly key rotation plus address format churn, except on-chain state makes it miserable?
> Is this mostly key rotation plus address format churn
No, the hard part is the long tail of already-published pubkeys and dormant outputs, not the address encoding. Once a key is exposed on-chain you cant just rotate it away, you need some migration path that can move value without trusting every old signer to come back online, and that gets ugly fast for pre-signed scripts and lost keys.
> not the address encoding
Address format is the easy bit, consensus rules for old scripts arent.
> "the long tail of already-published pubkeys"
That's mostly a policy problem, not a cryptographic one.