Security· ★★★· neutral·

Bitcoin's quantum threat: three fronts to secure the network

  • —StarkWare's estimated cost of a quantum-safe transaction fell from $320 to $67 in seven days
  • —The method only protects bitcoins whose public key has never appeared on the ledger
  • —BIP-360 and BIP-361 prepare post-quantum signatures and a phased shutdown of legacy ones
  • —Coinbase holds about $250 billion in institutional assets and is building post-quantum custody
Why it matters: Protocol-level and custodian-level preparations for Q-Day reduce the long-term risk for BTC holders.
Source: Journal du Coin