WO WO2026169696A1
A computing system may obtain a mnemonic phrase representing a master crypto-graphic secret. The system may derive, from the mnemonic phrase, one or more hardened private keys corresponding to one or more hierarchical deterministic derivation paths. The system may perform a one-time verifiable secret sharing (VSS) operation to split the mnemonic phrase and the hardened private keys into cryptographic shares. Each cryptographic share may include at least a share of the mnemonic phrase and a share of the hardened private keys. The system may distribute the cryptographic shares to a plurality of computing devices associated with a multi-party computation (MPC) environment. Responsive to distributing, the system may delete a complete version of the mnemonic phrase and the hardened private keys. The system may perform a cryptographic transaction by executing an MPC signing protocol cooperatively using two or more of the plurality of computing devices based on their respective cryptographic shares.
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