Stacks Tests Post-Quantum Signatures With sBTC Transfer

Stacks executed its first mainnet sBTC transfer authorized by a post-quantum signature, using a Lamport one-time signature to withdraw from a mainnet vault. The test does not upgrade ordinary sBTC wallets or alter the Bitcoin backing the token, so it serves as a proof of concept rather than a protocol-wide change. It matters because quantum computing poses a long-term threat to the elliptic-curve cryptography securing most blockchain wallets, and Stacks is among the first Bitcoin-layer networks to validate an alternative on mainnet. What to watch next is whether Stacks extends post-quantum signing beyond vault withdrawals to standard sBTC wallets and how other Bitcoin Layer 2 projects respond.