Zanii proof

Receipt sha256:1c9335803c35cfbf19fbe804192c3e648a7ea5235858d4b7eb0b1c7538f138d9: leaf #19576

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 104846 - evm:782450cadd6bd9bd0a1c694df8683b9880ca52746f58afb872a3c6cb6478c5bf (block 52890292)

Receipt

{
  "v": 1,
  "ts": "2026-09-24T08:11:32.373Z",
  "sig": "ed25519:74a94beae7837e43778848fee12405c215205a6cc2e18052d52d7901388acc111315a2302372d7ded16b920fd0130afde712be00ef53b78fc22a57c542d1a109",
  "prev": "sha256:955a67a4fe891115ce7bff6b5a5a45efd2d3d6e41a372c52e18e26fe7d88493d",
  "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": "sha256:4d091a4b548c296aa127f605c514e5a9384cbe76c6b2f032b7dfededbe1f4862"
}

Inclusion proof

{
  "index": 19576,
  "tree_size": 104846,
  "path": [
    "17c658a2a51d657d011249e4e85fbf1ad1ed8bce4fb914dda454b697c4f34678",
    "ed7d5403f69cc78041027264f9dce3d3085d0e77e0e301e9047ab19f7e3042a7",
    "8fcfacea12a19f03820a5448f3949d4f9e045f900fa47fba97eb7d00930cd4ca",
    "7b9cf0b5962e20bd4eeeb1e702b72a602b03b590091730b1b8b90d6c3704364c",
    "4233d927f835c8f20c772dc4ba4592ed700054d03e3946dc127519fe730cbab5",
    "e62ec9396b5ead7ab451c3456c6151935cfffaf5d3531d9229b48525f125d0b7",
    "79486eefb1b23e6f342823908c7fcb165446ef7674e0e61bb2f274310e1abd19",
    "88888da773d603e05672b7347d92ce66fe1ee3577a4c5904328d3b803304367b",
    "e8071a4b5f14eef01230e506a3495ed81493464b608139460e941b67c73826cb",
    "ad211fde76ed8fff8103851e9f9d2aae7ad80c69a9952e1db2c69608562cfe3c",
    "a1ced7e33c005777728ecb9e3fc868bca64ca2cf5a9b417e41f6a7a99aa2544d",
    "c7b8ce854537c004d06353241029e2d288a3a8ee95fb05089c5a4f3aca1dcd53",
    "f20eb714c84daf4466cbc0ca224d8eb3dfa27f35bf9ee4f4394fcf32edaca171",
    "ef696e1150e8ccfa38bfb885032500f8ef2b780c99f0d9c84ee431d7bdcd42b5",
    "387fe46d3a9c7e345626d5961018c5dbe97f19c7ea00d9e2e0faa6ca09697fed",
    "5a4632f32becd822f53f3cc14a9488aa3faaed59d147c16b975350731a61aab6",
    "4d8e084f3042037b24924c619fae9f3035564d6c1d36620f7703a0a39f86b1fb"
  ]
}

Signed tree head

{
  "v": 1,
  "log_id": "did:key:z6Mkt3UL3dCEigChGEJKSdhSra7JRoG2z1GLtbrLCKnL5GX2",
  "size": 104846,
  "root": "sha256:4a014ad5c84edf51957081a51f4212730e25e71056a0cf5d536dd0ab69cabf7e",
  "ts": "2026-10-21T08:07:21.958Z",
  "sig": "ed25519:e6a56fc471061862cca884cdc3feda3b70ba32ddef14535b49df75dcf6766c22ea8feb1ce9d9d660ff702dda349bdc0567759dcab47a74bd8c0c0f52503cf800"
}

Verify independently

curl {this host}/v1/proof/sha256:1c9335803c35cfbf19fbe804192c3e648a7ea5235858d4b7eb0b1c7538f138d9

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.

Scan to verify on your phone

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