Evidence row 275510

What was observed

{
  "count": 11,
  "tools": [
    {
      "description": "Validates a grant token seal, reports active/revoked/expired state, and records introspection to the ledger.",
      "inputSchema": {
        "required": [
          "grant_token"
        ],
        "type": "object"
      },
      "name": "broker.introspect-grant"
    },
    {
      "description": "Registers an opaque vault handle/reference only; plaintext secret fields are rejected and never ledgered.",
      "inputSchema": {
        "properties": {
          "metadata": {
            "type": "object"
          },
          "vault_handle": {
            "description": "Opaque vault reference such as vault://provider/path; never a plaintext secret.",
            "type": "string"
          }
        },
        "required": [
          "organization_id",
          "registered_by_agent_id",
          "label",
          "credential_type",
          "vault_handle",
          "allowed_action_type"
        ],
        "type": "object"
      },
      "name": "broker.register-credential"
    },
    {
      "description": "Asks the canonical Policy Engine for an ALLOW decision before issuing a short-lived HMAC-sealed grant bound to credential, mandate, agent, scope, and expiry.",
      "inputSchema": {
        "required": [
          "credential_id",
          "acting_agent_id",
          "mandate_id",
          "action"
        ],
        "type": "object"
      },
      "name": "broker.request-access"
    },
    {
      "description": "Revokes a broker grant by id and records the revocation to the ledger.",
      "inputSchema": {
        "required": [
          "revoked_by_agent_id",
          "reason"
        ],
        "type": "object"
      },
      "name": "broker.revoke-grant"
    },
    {
      "description": "Redeems a sealed grant for the bound acting agent and executes the bound action through the Gateway and Policy Engine; does not expose plaintext secrets.",
      "inputSchema": {
        "required": [
          "grant_token",
          "acting_agent_id"
        ],
        "type": "object"
      },
      "name": "broker.use"
    },
    {
      "description": "Submits an action through the Gateway and canonical Policy Engine; returns ALLOW, DENY, or REQUIRE_APPROVAL with ledger proof.",
      "inputSchema": {
        "required": [
          "acting_agent_id",
          "action_type",
          "amount_minor",
          "counterparty"
        ],
        "type": "object"
      },
      "name": "mandate.authorize-action"
    },
    {
      "description": "Creates a child mandate only when it is a no-escalation subset of the parent mandate.",
      "inputSchema": {
        "required": [
          "parent_mandate_id",
          "delegator_agent_id",
          "delegate_agent_id",
          "budget_total",
          "per_action_limit",
          "starts_at",
          "expires_at",
          "scopes"
        ],
        "type": "object"
      },
      "name": "mandate.delegate"
    },
    {
      "description": "Returns this self-describing tool manifest.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "mandate.discover"
    },
    {
      "description": "Creates an active human-granted mandate for an agent and records it to the hash-chained ledger.",
      "inputSchema": {
        "required": [
          "organization_id",
          "agent_id",
          "grantor_principal_id",
          "budget_currency",
          "budget_total",
          "per_action_limit",
          "expires_at",
          "scopes"
        ],
        "type": "object"
      },
      "name": "mandate.mint"
    },
    {
      "description": "Revokes a mandate subtree and records the revocation to the hash-chained ledger.",
      "inputSchema": {
        "required": [
          "revoked_by_principal_id",
          "reason"
        ],
        "type": "object"
      },
      "name": "mandate.revoke"
    },
    {
      "description": "Records a proof payload hash and appends proof evidence to the hash-chained ledger.",
      "inputSchema": {
        "required": [
          "organization_id",
          "subject_type",
          "subject_id",
          "proof_type",
          "payload"
        ],
        "type": "object"
      },
      "name": "mandate.verify-proof"
    }
  ]
}

What the leaf hashes

{"body":"56873a468132597f748c53c92ab441bdb10ed3ee5d322deb9f9732f9362b773d","id":275510,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793040642668032,"prev":null,"subject":"cefb257b-f5c2-4aa5-a075-a7431f884290","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xcb85420c34e282cd53ea510847398ca0bf35d3039c16f2ffa19460529336ca1d
2. 0xc96ff42feebda407d213d79b2730d20903b6a1a0ed0cf85821e05c6a59acc1b6
3. 0x407f3bafd2cd38b3336b8785cd1ed76601cdbdf91f99dfe06332c6c8cbc29652
4. 0x6e3886d98685d14eb1e84ef54201aa1d46ed1e1e22e406fb26e3d7c6a3bb5879
5. 0x12f1321be754bc1b20c7b3a3f14de1e04877bab45287179381e66030b0e64e70
6. 0x021de7b4b52da64cdcd09bb779aa97148af1f799fd1438fcf2ae09c76ad08ebf
7. 0xc6c39842fce0c284e5304769cdd50892f94dec3498a6c9d4b5cadab939bb9720
8. 0x71d569d7fb7f5dcb12c523eb1fe005bb215345c4c74481008bcf18c179996055
9. 0x437c91a26d3278e3f6bcd62195a5cf4a70a6cb56a11cee0799b78b65d0ebc5e5
10. 0x8ca2b941fcbeaadb786578b867358c39f7478187eb54fa39611f89a08c95f9ef
11. 0x351a777a477836c8c26972f993b4d53df3d67c6acea7cef50b5038df678d6a3f
12. 0x85ea84dc356483b05e7ec8ed6e303988684070a1512dc756c8e64a7e3604feaf
13. 0x985acd37cc044d5aa6ad959194da8e91c81045df83517891ed92f1763a9ab825
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae