Battlefield Report
Bitcoin developers have introduced BIP-361, a draft proposal that outlines a phased migration away from the network’s current signature schemes to prepare for future quantum computing threats.
The proposal is not active and does not require Bitcoin holders to move their funds. It instead presents a roadmap for upgrading the network before quantum computers become capable of breaking today’s cryptography.
Intelligence Findings
BIP-361 proposes a two-stage transition.
The first phase would gradually prevent new transactions from creating quantum-vulnerable outputs, requiring legacy coins to move into quantum-resistant addresses.
Around two years later, the second phase would introduce stricter spending rules for coins that were never migrated. The proposal also explores recovery methods that could allow legitimate owners to prove control of their wallets if quantum attacks become possible.
The plan remains incomplete. Developers have yet to agree on a post-quantum signature standard or finalize how older wallets, particularly early Pay-to-Public-Key addresses, would be protected.
Threat Assessment
Quantum computers capable of attacking Bitcoin do not exist today, but migration could take years to coordinate across exchanges, custodians, wallet providers, miners, and node operators.
Without an agreed recovery process, some dormant or legacy wallets could face challenges if quantum-resistant rules are eventually adopted.
Intelligence Assessment
BIP-361 is an early attempt to prepare Bitcoin for a long-term security challenge rather than an immediate network upgrade. The proposal reflects growing recognition that transitioning millions of wallets may become a bigger challenge than developing quantum-resistant cryptography itself. The next milestone is the selection of a post-quantum signature standard, which will determine whether the proposal can move beyond the draft stage.
