EL7.AI
CryptoUpdated×24•Originally published 16 April 2026•Updated 17 April 2026•
1 min read

Bitcoin Researchers Propose 'Signature Sunset' to Mitigate Quantum Risks

Key Facts

1Bitcoin researchers proposed a phased plan to restrict and eventually render quantum-vulnerable legacy signatures unspendable.
2The proposal aims to protect the network from future threats posed by quantum computers to stored funds.

The debate over Bitcoin's security has intensified following warnings from Nobel laureate Dr. John Martinis regarding quantum computing's ability to break encryption. However, the focus has shifted to technical trade-offs as Samson Mow warned that post-quantum cryptography could cause signature sizes to balloon by as much as 125 times. This massive increase in data volume raises concerns about new network attack vectors and potential congestion. These technical hurdles amplify existing fears regarding the permanent loss of legacy BTC and the feasibility of current mitigation strategies. While institutional players like BlackRock are expected to guide future upgrades, the community now faces a critical dilemma between quantum resilience and the fundamental scalability of the blockchain.