In a major step for long-term network security, Blockstream has advanced post quantum bitcoin protections with a live deployment on its Liquid sidechain.
First live post-quantum signatures on Liquid mainnet
On March 6, 2026, Blockstream revealed it had broadcast the first post-quantum-signed transactions on a production Bitcoin sidechain, using Liquid mainnet. These transactions secure real funds, not test coins, underscoring that this is a production-grade security upgrade rather than a laboratory proof of concept.
The milestone is the first live deployment of quantum-resistant signatures on a Bitcoin-linked sidechain that actually holds user assets. Moreover, it directly addresses rising concerns that future quantum computers could break today’s classical cryptography and place digital wealth at risk.
Currently, funds on Liquid rely on ECDSA and Schnorr signatures to prevent unauthorized spending. However, a sufficiently powerful quantum computer could mathematically a
We współpracy z: https://en.cryptonomist.ch/2026/03/06/post-quantum-bitcoin-liquid/
