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Coinbase, which holds approximately 5% of all existing BTC in custody, has outlined technical considerations for Bitcoin’s transition to post-quantum security. The company warned that migration could take years and urged developers and custodians to begin preparing early.
Why it matters
Coinbase suggested exploring flexible output designs including BIP-360, also known as P2MR, and P2TRv2. It also proposed a phased transition that supports classical and post-quantum signature mechanisms during the changeover.
The recommendations frame quantum security as a long-term infrastructure issue rather than a single protocol upgrade. A gradual approach could give wallets, custodians, and network participants time to adapt without forcing an abrupt change to Bitcoin’s transaction system.
Market impact
The immediate impact is on Bitcoin’s security roadmap and custody planning, not on short-term trading flows. Coinbase said dormant funds, lost private keys, and wallets that fail to migrate should be considered separately so those questions do not delay broader post-quantum upgrades.
That separation leaves the Bitcoin ecosystem with two linked tasks: designing a migration path for active users and determining how to handle holdings that cannot move. Coinbase’s position puts custody providers at the center of preparations for a transition that may span years.
Frequently asked questions
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Why is Coinbase calling for early Bitcoin quantum preparations?
Coinbase says Bitcoin’s migration to post-quantum security could take years. Early planning would give developers, custodians, wallets, and other network participants time to adapt.
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Which Bitcoin designs did Coinbase suggest exploring?
Coinbase suggested exploring flexible output designs including BIP-360, also known as P2MR, and P2TRv2.
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What transition model did Coinbase recommend for Bitcoin?
Coinbase outlined a phased transition that supports both classical and post-quantum signature mechanisms during the changeover.
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How should dormant Bitcoin funds and lost keys be handled?
Coinbase said dormant funds, lost private keys, and wallets that fail to migrate should be addressed separately from broader post-quantum security upgrades.
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Why are custodians central to Bitcoin’s post-quantum transition?
Coinbase holds approximately 5% of existing BTC in custody, and custodians will need to prepare wallets and holdings for a security transition that could span years.
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