Zanii proof

Receipt sha256:49b409d19e658f04a696778456a1c6a75581366ba3fe3fe31d60a7c361455ab1 — leaf #4127

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": "2026-08-13T02:00:37.010Z",
  "sig": "ed25519:d04772efbdb34da0a4edad9d0ff8d4b11151c3cde88635098088beec11fb3c59f166e95a9cce346fcb64dadab5700db00e6d09cae85dfce9672c5ace6a398e00",
  "prev": "sha256:240689fe16b066900373e00a0a5bc1ae8591f82d6b1f8576afb4e50c9668203c",
  "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": "sha256:2da9ac97c96951d2e9e6a2c65d9c169e8d085c5c2090a19cb0d3c3b9346c5fbe"
}

Inclusion proof

{
  "index": 4127,
  "tree_size": 4353,
  "path": [
    "b26e35cf0be080e258d6e31b424749e0c5acfbfc7560d2a4d9c8da53dcd794c3",
    "6764956e4417ac8d151f9ab9619fe4b151abe94c194de72137ec6791a988a31f",
    "15556b755f234a575d9263867e6e797bb456318896c125f5ff9a78bcaebe8585",
    "39ee6471ea6fbb26c66f160749194cf7cba31b040c64f343749b6c744e9a4a7d",
    "8a5146c59beda714d1854603426596df0d1fc59279dc58751b86983efe176c49",
    "982d799a59313a32fd0a17eefe8a9e02b9a289cbdcb88c2bcbe087df1145b1e0",
    "95e0d0d8b104a75a06e06982d24700766b98a22e3ae5876b6cd3df8bbb6fbf65",
    "d109c4a5ddc4246146e92d0a889a2505421503b74b8e4556889e000a44ac89a8",
    "cc6be04373f43c05afaab5f1bb350502d06cff2a9eadd5803cfc41464f822b04",
    "c3310bbc7505d7ab6534f5142146d3f686b80a369526056f43a3c77e2dc4240a"
  ]
}

Signed tree head

{
  "v": 1,
  "log_id": "did:key:z6Mkt3UL3dCEigChGEJKSdhSra7JRoG2z1GLtbrLCKnL5GX2",
  "size": 4353,
  "root": "sha256:9b710a4755e52983ef28d15ee7b32ff5cb0e058cf326c9999c89bf56cecb783c",
  "ts": "2026-08-17T12:27:02.853Z",
  "sig": "ed25519:cca1fd77c44f15584ee6351b990c791413251d4052fea8c529707c7c1542a8112d7fd49412dac13cd4c696fdcfe7ae25f1856b8dce471bf7bb6a4754f18cb60d"
}

Verify independently

curl {this host}/v1/proof/sha256:49b409d19e658f04a696778456a1c6a75581366ba3fe3fe31d60a7c361455ab1

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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