Zanii proof

Receipt sha256:df92644e801c49b6119abb876c9179dcc0870561329510e68c83202b1aedfcfb — leaf #4170

Verification PROVEN

✔Receipt signature, delegation chain, and scope — signed by did:key:z6MkksYZxAX4EpiA…

✔Delegation not revoked

✔Merkle inclusion proof against current tree root

✔Signed tree head signature — log did:key:z6Mkt3UL3dCEigCh…

Anchoring

✔Covered by anchor at tree size 4353 — zanii:34fcb38c67663e785816996c5a2fec034dbdf3dcf0be246a0670d36330b59eb1 (block 21693)

Receipt

{
  "v": 1,
  "ts": "2026-08-14T02:00:56.755Z",
  "sig": "ed25519:6724b68e256a5b195b6d4b1b74dd84a25a1c08685effc63602f546630cfb210f81f6a4c93467917025c9a367bd76696b531fb5a4b74bccb9019182c9ba3c6303",
  "prev": "sha256:49b409d19e658f04a696778456a1c6a75581366ba3fe3fe31d60a7c361455ab1",
  "action": "tool_call",
  "target": "ads.investigate.evidence",
  "agent_id": "did:key:z6MkksYZxAX4EpiAetcDB3uN9w1FY7LjriS966ZPCTMtCzXt",
  "delegation": [
    {
      "v": 1,
      "exp": "2027-07-06T21:17:24Z",
      "sig": "ed25519:d7ddef78324cfcbfe417611c4f135cbbcc2858ea076ddf7d8a0c41c6edc0c9aab906fc175bd92614c54d9ba76891a94941a7b9d7fa560be9c1588755c962bc08",
      "issuer": "did:key:z6MksQZm73wT4p97GUjdKC4SJxgsm8dzizoLCBE8U2QRRZBb",
      "scopes": [
        "ads.investigate.*"
      ],
      "subject": "did:key:z6MkksYZxAX4EpiAetcDB3uN9w1FY7LjriS966ZPCTMtCzXt"
    }
  ],
  "subject_tag": "sha256:51e5d015a51da3d46d7f5f5ea126970d229e7297aef867b87096085ffc33e42d",
  "payload_hash": "sha256:4a8fb15cc99a3c8ee2e6ab932797f90ce01f884785ac9285a11a663a65cddec8"
}

Inclusion proof

{
  "index": 4170,
  "tree_size": 4353,
  "path": [
    "6ffae00f159d8380ab4e0a91934b0d4288ae5cb13bfa5f06d8cad8d3fb6e27ee",
    "d0c0917bbd620bfb908c2985c0f80f0d919db42bf3763815893ef30c96cbc80d",
    "f23fc4c49b12d7934eebacf30b9bd2454ae79f4cea9f0147c6bdddeec1d59262",
    "d61e077c786656c30905c1c7e0f5f8e2750e21964b42e618702c14ef2c0d851d",
    "59663975303d6377c47258dbecdc70dc285426a36238db4aad2ad8cfa7e2ffb5",
    "fbfa2499d1446ac4835ac03eda59545a46f624fd4acbda713f02dfd49dd5c381",
    "736a081e54e8bed6664b7451e3b58877be18a93b4719b4c022b25f6747d2a5bf",
    "d109c4a5ddc4246146e92d0a889a2505421503b74b8e4556889e000a44ac89a8",
    "cc6be04373f43c05afaab5f1bb350502d06cff2a9eadd5803cfc41464f822b04",
    "c3310bbc7505d7ab6534f5142146d3f686b80a369526056f43a3c77e2dc4240a"
  ]
}

Signed tree head

{
  "v": 1,
  "log_id": "did:key:z6Mkt3UL3dCEigChGEJKSdhSra7JRoG2z1GLtbrLCKnL5GX2",
  "size": 4353,
  "root": "sha256:9b710a4755e52983ef28d15ee7b32ff5cb0e058cf326c9999c89bf56cecb783c",
  "ts": "2026-08-17T12:26:36.892Z",
  "sig": "ed25519:1f608b485e9531c03e92457d2cd2e5868efa335fefbf20a062796ca98d0984495d3c6347c467770ee7c40485fc77a09b5022c1aba78be28f868732f5eba3fa07"
}

Verify independently

curl {this host}/v1/proof/sha256:df92644e801c49b6119abb876c9179dcc0870561329510e68c83202b1aedfcfb

Anyone can re-verify with the zanii SDK (Python or TypeScript): receipt signature → delegation chain → scope → Merkle inclusion → STH signature. No trust in this server required.

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