Anchoring API

Verbitas anchors Merkle roots of manifest digests to timestamp ledgers. Asset bytes and PII are never written to a blockchain — only Merkle roots.

GET /v1/anchors/{batch_id}

Get the anchoring status for a batch.

GET /v1/anchors/2026-05-09T08:00:00Z
Authorization: Bearer vb_test_...

Response:

{
  "batch_id": "2026-05-09T08:00:00Z",
  "status": "confirmed",
  "methods": {
    "opentimestamps": {
      "status": "confirmed",
      "proof_url": "https://api.verbitas.io/v1/anchors/2026-05-09T08:00:00Z/ots"
    },
    "bitcoin": {
      "status": "confirmed",
      "txid": "abc123...",
      "block_height": 840000
    }
  },
  "merkle_root": "sha256:abcdef..."
}

GET /v1/anchors/{batch_id}/ots

Download the OpenTimestamps .ots proof file for independent verification.

Anchor methods by recipe

Method	Description
`opentimestamps`	RFC 3161 timestamp via OTS calendars
`bitcoin`	Merkle root in Bitcoin OP_RETURN (via Alchemy)
`arbitrum`	Merkle root in Arbitrum One (via Alchemy)
`byoc`	Customer-supplied blockchain endpoint (enterprise only)

See Anchoring concepts for how batch anchoring works.