According to BitMEX Research, a referenced book imagines that practical quantum computers exist by 2023 and concludes cryptography would not be killed, outlining five categories of quantum‑resistant schemes, which directly informs long-term risk framing for digital assets. Source: BitMEX Research (Twitter, 2025-12-23). For trading context, standardized post-quantum algorithms now exist for key encapsulation and digital signatures (ML-KEM/Kyber, ML-DSA/Dilithium, SLH-DSA/SPHINCS+), providing concrete candidate replacements for current primitives used across blockchain networks. Source: NIST FIPS 203, FIPS 204, FIPS 205 (2024). Bitcoin and Ethereum use ECDSA over secp256k1 for transaction signatures, so any quantum-related exposure in these networks centers on signature algorithms, which have defined post-quantum alternatives per current standards. Sources: Bitcoin Core documentation; Ethereum Yellow Paper; NIST FIPS 203/204/205 (2024).