Coinbase Signals Bitcoin Upgrade Urgency Amid Quantum Threat
Key Summary
Coinbase warns Bitcoin developers to prepare for a potential upgrade to quantum-resistant signatures to safeguard against quantum computers breaking the cryptocurrency's cryptography. The exchange also highlights a separate challenge in protecting dormant, lost, or inaccessible Bitcoin holdings attributed to Satoshi Nakamoto.
Background and Historical Context
Coinbase has been warning about the potential threat of quantum computers breaking Bitcoin's cryptography for some time. The exchange has been taking proactive steps to ensure the long-term viability of Bitcoin.
The Challenge
Bitcoin's future security could be threatened by quantum computers capable of breaking the cryptography securing its wallets. Coinbase is urging developers to begin preparing for an upgrade that may take years. The exchange is preparing its systems, engaging developers and supporting phased upgrades that introduce quantum-resistant signatures.
The Quantum Threat
A quantum computer could break the cryptography that keeps Bitcoin safe in wallets. Coinbase said it held about “5% of all Bitcoin in existence” as a custodian for banks, asset managers, hedge funds, and other institutions. The exchange added that it was preparing its own systems, holding discussions with Bitcoin developers, and participating in the Bitcoin Security Consortium.
The Dormant Coins Challenge
Coinbase raised another challenge: how to protect dormant, lost or inaccessible Bitcoin holdings, including coins attributed to the network's pseudonymous creator, Satoshi Nakamoto, that may not be moved to upgraded wallets. In a blog post, Coinbase said Bitcoin should begin preparing "well ahead" of any announcement of a cryptographically relevant quantum computer. The exchange said the move would be "a challenging, complex, and multi-year process."
Coinbase is urging Bitcoin developers to prepare for a potential upgrade to quantum-resistant signatures. The exchange is also highlighting a separate challenge in protecting dormant, lost, or inaccessible Bitcoin holdings. The exact timeline for this upgrade is unclear, but Coinbase's plan shows the company is preparing for this potential risk. The exchange clarified that the post was meant as input to an open discussion, "not a set of instructions or a final Coinbase position." Bitcoin wallets are protected by digital signatures that a powerful enough quantum computer could, in theory, break. Once a wallet's public key is visible on the blockchain, such a machine could work out the private key and take the funds.