Zanii proof

Receipt sha256:955a67a4fe891115ce7bff6b5a5a45efd2d3d6e41a372c52e18e26fe7d88493d: leaf #19515

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": "2026-09-24T05:53:31.937Z",
  "sig": "ed25519:31bdf7d2564a47ccca4967a5b3ed037d0f1969493c4ac1ffaae6b14f60f8a93899dc70e8ca77778226b0cf7b9325d75759e9432ca45cd5fa798086e6b9d8d506",
  "prev": "sha256:7b61295ee57173e208ebf667e5f115ebf31ee7246687cef3592a149f9e53973c",
  "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:da198d8de07d33871b886d3b5b29a07511008f566178cb7a752e65a79c31009a"
}

Inclusion proof

{
  "index": 19515,
  "tree_size": 104846,
  "path": [
    "f3b1f749f47824dbb5d58501aeb7e61456530b23e9976baed53687c86dd83500",
    "e6438d93cb6cde43723d53c05f5dbfe62481a735e34516fa6f0a30483efd7ab8",
    "d6325306d86f32bdb705dadc84b8884d87289d3d9b3d3241461f9fd2b90b3449",
    "3101e6b821c5f6cd30ce543397d80e939504f8c9ebe00444dad184db0b27fcf8",
    "64364990819113581ef9c9dc605be19772d028bc787711a014d24fa5073fc579",
    "1ac0030f9bd6aef0a5d5afba834dba0b48850bbea06cd174cbd64dfcb4a3023e",
    "9f0f0c5ee1bd964a2e898b4c4fa34e309c6d48bac5db7416c5d6c2f94935e70f",
    "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": "2026-10-21T08:09:54.292Z",
  "sig": "ed25519:2c39f4a40299ee28ac05d8419491317ebe65184bba4b84f376161044fc4d6a13cc771ad25d50f83217f8942a9ccd1e34993e981113ce77eca851768e52e55905"
}

Verify independently

curl {this host}/v1/proof/sha256:955a67a4fe891115ce7bff6b5a5a45efd2d3d6e41a372c52e18e26fe7d88493d

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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