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Analysis of did:cel Heartbeat: Relevance to KERI

Practitioner informative

Maintainer: Daniel Hardman · 2025-12-20 · checked 2026-10-15

A short 2025 analysis by Daniel Hardman of the heartbeat mechanism in the did:cel DID method, a periodic controller signature against retrograde (history-rewriting) attacks, and of whether KERI needs one. It concludes that KERI's pre-rotation and witness-based duplicity detection already cover the threat while allowing cold, offline keys. It is for readers comparing DID methods with KERI.

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