Technical dictionary
Multisignature (multisig)
Authorization requiring M-of-N keys—improves operational security, not post-quantum math by itself.
Definition
Multisig wallets require multiple signatures before funds move. That raises the bar for classical key compromise of a single device.
If each key is still ECDSA/Ed25519, a CRQC that breaks those schemes can still threaten the set—multisig is not a substitute for PQC algorithms.