Private keys are single points of failure. We've all known this, but we treat it as an operational problem — HSMs, rotation schedules, access policies.

Threshold signatures make it a *cryptographic* problem instead. DKLS23 splits a key across parties so no one holds the full secret, and the output is standard ECDSA.

I wrote up a plain-language explainer: https://eric.mann.blog/why-one-key-shouldnt-rule-them-all-threshold-signatures-for-the-rest-of-us/

Part 1 of a 3-part series. #cryptography #security #ECDSA #ThresholdSignatures