Nic Carter, partner at Castle Island Ventures, has called for Bitcoin to begin its transition to post-quantum cryptography without delay. In a detailed article, Carter highlighted the inadequacy of current quantum computing warning mechanisms, noting that classical computers can solve elliptic curve discrete logarithm problems for key sizes up to 130 bits. He warned that once quantum computers exceed this threshold, they could potentially attack Bitcoin's 256-bit secp256k1 curve within months. Carter emphasized that migrating Bitcoin to post-quantum signatures could take years, making immediate action essential. Carter criticized reliance on quantum-break bounty addresses or dormant Satoshi addresses as insufficient for timely risk detection. He argued that proactive preparation is the only viable strategy, contrasting with BitMEX Research's proposal of a quantum freeze mechanism using a canary address trigger. Carter's stance underscores the urgency of addressing quantum threats to Bitcoin's security.