The regulated cryptobank Anchorage Digital has unveiled a detailed strategy for preparing institutional digital assets for the post-quantum era. According to co-founder and CEO Nathan McCauley, quantum computing is not an instant threat, but a long migration process for which the infrastructure must be ready in advance. The main risk for cryptocurrencies lies not in the vulnerability of mining or hashing algorithms, but in the compromise of digital signatures, since Shor's algorithm theoretically allows you to recover a private key based on an open public address. To minimize these threats, the organization is already using hybrid protection for internal TLS connections and implementing post-quantum key encapsulation on managed employee devices running ChromeOS.

An important element of the security architecture is strict adherence to the practice of minimizing the reuse of cryptographic addresses, since hashing the public key hides it until the moment the transaction is initiated. Additionally, Anchorage Digital has offered an innovative Post-Quantum Turnstile mechanism designed to securely transfer ownership rights from old accounts to post-quantum keys. This technology relies on STARK's zero-disclosure evidence to confirm knowledge of the secret without actually disclosing it and without the need for a trusted initial setup. At the same time, the cryptobank opened the source code of the sqisign-rs library, which implements the SQIsign digital signature scheme in the Rust language, which provides a significantly smaller signature size compared to the alternative Falcon algorithm.

The proposed migration approach is of critical importance for the entire industry, as, according to Anchorage experts, it is potentially applicable to two thirds of all coins in circulation. Nevertheless, the scale of the problem remains significant: Glassnode analysts previously estimated that about 6 million bitcoins are located at addresses with already disclosed public keys, which makes them a potential target for future quantum attacks. Against the background of these challenges, the developers of the Quantus project previously pointed out the general unwillingness of the cryptocurrency market to make a widespread transition to post-quantum cryptography, emphasizing the need for urgent modernization of security protocols at the ecosystem level.