TechFlow reports that on May 1, Nic Carter stated the risk quantum computing poses to Bitcoin cannot be clearly signaled in advance via “canary” mechanisms—such as incrementally difficult key challenges, quantum bounties on addresses, or early Satoshi coins. He argues that once quantum computers definitively break medium-scale ECDLP, the timeline to threatening secp256k1 may shrink to just months, whereas deploying post-quantum signature schemes and migrating vulnerable UTXOs on Bitcoin is expected to take years. Consequently, Bitcoin and other blockchains may need to proactively advance their transition to post-quantum signatures—even in the absence of clear on-chain signals.
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