POST /api/chain/:slug/state

Append a state-hash snapshot. The caller computes the hash off-chain. Useful for periodic state attestations.

Auth

Bearer with operator role or higher.

Request

{
  "state_hash": "0123abc…64hex"
}

state_hash is required. 64 hex chars, lowercased server-side.

Response — 201

{ "ok": true, "zeqondNumber": 2287439213, "transitionId": "9b1c-…uuid" }

Errors

Status	error	Cause
400	invalid_request	state_hash missing or wrong length
401/403/404	as in POST /event

Curl

curl -sS https://zeqapi.com/api/chain/my-iot-fleet/state \
  -H "Authorization: Bearer ${ZSM_KEY}" \
  -H "Content-Type: application/json" \
  -d '{"state_hash":"0123abc1234567890abcdef0123456789abcdef0123456789abcdef0123abcd"}'