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theblock.coarticle

Coinbase lays out flexible designs as key priority for Bitcoin’s post-quantum migration

Coinbase's October 2026 position on Bitcoin's post-quantum migration, as reported by The Block. Coinbase, which holds about 5% of bitcoin supply, favors output designs that separate the container from the signature scheme (P2MR/BIP-360, P2TRv2), staged hybrid 1-of-2 spending paths, a stateless option beside stateful signatures, and MPC-compatible schemes for custody. It also wants the abandoned-coins debate run in parallel.

TL;DR Reports Coinbase's call for flexible, hybrid, MPC-friendly post-quantum output designs on Bitcoin.
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Organisations named here

  • Coinbase
  • The Block

Technologies named here

  • Bitcoin

Standards and laws named here

  • BIP-360

Techniques named here

  • Hybrid 1-of-2 spending paths
  • Multi-party computation (MPC)
  • P2MR (BIP-360)
  • P2TRv2
  • Stateful signatures
  • Stateless signatures

Concepts named here

  • Abandoned coins debate
  • P2MR
  • P2TRv2
  • Post-quantum migration
  • Separating output container from signature scheme

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