Coinbase Proposes Post-Quantum Transition Plan for Bitcoin
Coinbase released a draft discussion on October 14, 2026, proposing signature upgrades and early preparation for migrating Bitcoin funds to a post-quantum system.
Coinbase released a draft discussion on October 14, 2026, proposing a transition path for Bitcoin toward a post-quantum system, according to CoinPost. The proposal calls for upgrading signature methods and preparing for fund migration in advance.
Coinbase supports a design that separates output types from signature schemes. That structure would allow multiple post-quantum signatures to be added or replaced without redesigning the system. The company named P2MR (BIP-360) and P2TRv2 as flexible candidates.
As an early transition step, Coinbase suggested a "1-of-2" configuration, in which funds can be spent with either a classical signature or a post-quantum signature.
Risks and Governance
Coinbase advised caution regarding stateful signature schemes, noting that reusing internal state could lead to forgery. It also stated that at least one signature scheme should be compatible with MPC, since large organizations use MPC to prevent key theft.
The proposal argues that dormant coins, lost coins, and coins with exposed public keys should be handled separately, requiring both governance and engineering solutions.
Coinbase's draft connects to discussions about handling early Bitcoin believed to be held by Satoshi Nakamoto, the cryptocurrency's presumed early holder.
Quick answers
What did Coinbase propose for Bitcoin?
Coinbase released a draft discussion proposing a post-quantum transition, including signature upgrades and early preparation for fund migration.
Which signature designs did Coinbase mention?
Coinbase mentioned P2MR (BIP-360) and P2TRv2 as flexible candidates, and suggested a "1-of-2" configuration as an early transition step.
How does the proposal address dormant or lost coins?
Coinbase argued that dormant coins, lost coins, and coins with exposed public keys should be handled separately, requiring governance and engineering solutions.