PANews reported on May 1 that Nic Carter, a partner at Castle Island Ventures, published a lengthy article on the X platform pointing out that the quantum computing "canary warning" mechanism cannot provide enough buffer time for BTC. Classical computers can currently solve the Elliptic Curve Discrete Logarithm Problem (ECDLP) with approximately 117 to 130 bits, while quantum computing results below this threshold are often questioned for "classical cheating" or pre-set answers, thus failing to form an effective signal.

Nic Carter believes that once quantum computers truly break through this classical limit, they may be only months away from directly attacking the 256-bit secp256k1 curve used by Bitcoin, while the quantum signature migration after Bitcoin's completion will take several years. Neither setting up quantum bounty addresses nor relying on Satoshi Nakamoto's early dormant addresses as on-chain warnings can guarantee sufficient early detection of risks. Therefore, the truly feasible approach is not to wait for explicit warnings, but to immediately begin preparations for the post-quantum (PQ) migration.

Previously , BitMEX Research proposed an alternative to quantum freeze: the "canary address" triggering mechanism.