Evidence row 771903

What was observed

{
  "count": 8,
  "tools": [
    {
      "description": "All Proof Records for an agent plus verified totals (no numeric score; that is the paid Proof Check). Free, read-only. An empty list means no verified history here, not a negative finding.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "agent": {
            "description": "Agent identity: 0x address, did:pkh:eip155:<chain>:0x… or did:ethr:0x…",
            "type": "string"
          }
        },
        "required": [
          "agent"
        ],
        "type": "object"
      },
      "name": "agent_records"
    },
    {
      "description": "Open, funded jobs on SML's Bid-cast board (escrow on Circle Arc), as published by the venue. Free, read-only; to post or bid, use Bid-cast itself (EIP-191 signed).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "capability": {
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "board_search"
    },
    {
      "description": "Latest Proof Records, newest first, with the ledger head. Free, read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "before_seq": {
            "type": "integer"
          },
          "limit": {
            "maximum": 500,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "ledger_list"
    },
    {
      "description": "The published Proof Score methodology and its version. Free, read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "methodology"
    },
    {
      "description": "Signed proof report for an agent: Proof Score per category, record count, settled value, buyer diversity. PAID via x402 v2 (exact USDC on Base). Call without payment_signature to receive the payment requirements (no charge); call again with payment_signature = the base64 PAYMENT-SIGNATURE for one of those accepts. Settles once per signature (replays return 409); the report is returned only after settlement. Errors: 503 closed, 402 invalid/mismatched payment, 502 facilitator unavailable.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "agent": {
            "description": "Agent identity: 0x address, did:pkh:eip155:<chain>:0x… or did:ethr:0x…",
            "type": "string"
          },
          "payment_signature": {
            "description": "base64 x402 v2 PAYMENT-SIGNATURE",
            "type": "string"
          }
        },
        "required": [
          "agent"
        ],
        "type": "object"
      },
      "name": "proof_check"
    },
    {
      "description": "Verified agent-job volume by venue, category and day (Proof Records only). Free, read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "proof_index"
    },
    {
      "description": "Verify a Proof Record yourself: recompute its hash, check the service signature against the published key, the hash-chain link, its Arc Merkle anchor, and re-read the release transaction on Arc mainnet. Free, read-only. Error: record not found.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "record_id": {
            "description": "e.g. pr_000001",
            "type": "string"
          }
        },
        "required": [
          "record_id"
        ],
        "type": "object"
      },
      "name": "proof_verify_record"
    },
    {
      "description": "Live status of the ledger, verifier, Arc anchoring and the SML components the board probes. Free, read-only.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "service_status"
    }
  ]
}

What the leaf hashes

{"body":"f31540ce6b2cc08f00bce8b5d90411526c38f2e05624d420744e54a4c1cb36a8","id":771903,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793191308041836,"prev":null,"subject":"06305ad2-0578-4eae-96cd-1060e74333b9","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x7a94d328c7e1194a1c1318a68be03ce475949f777109bf317012d6b54d46dc54
2. 0x638742cf585333edb5a650cc3362d7a027c4e15bf9bf9cb3ca347cb5526618db
3. 0x425a389c67e428f7b7a88f16d9da69f4ae092c12278888ad1d62d98d41629258
4. 0x0a21eba4162a7b25eb1017e8d2fe93c919c465d2e3b19c06f5bd87c8c33bc3cc
5. 0xedd66de98ec57facae21d08fb09532647c99fcdbd4b605ac38ffdee81f9beb6d
6. 0x88bb7a6a373159c4b51290ab4864a2039c16bf672511f212aeb2b962ac033640
7. 0xf430ee9ac76d699f2415b60f7f01e167ecdd98b8415ce3fcc1b3c5a35ba193a2
8. 0x5f0eb9dc957e40819c1b15851c555586f4db59ee12ba248f0d0de66e93f22256
9. 0x301ac6ab8a3fd9ca358c697c73c64e89fb91a228f67f33e785b26d61bfe9228a
10. 0xdddef6ebde62dcabd10b80636363009020dc60d6f509d75afa3acb52c989eab7
11. 0x51ae96e237653cf08f05672e377bf9449bc05716902be0bd0cbd92321b3fc950
12. 0xbe3c902baf7f3f5315c137ef4046adecc62fc5f9e5449c84bbe7d9fd7b3db570
13. 0xf042be8757f2f3ef070e717e38a7b0ad951d74298e721ac0b2e7855db790e392
14. 0x40581185279a8bf075dca3a4c3a5648ec6f62098ba7402cbc097d5cc707e0840
15. 0xab4e84d781dccd579dcf5c47a356a4a2e6cac58a2aefdf3543a3fa15238fa4db
16. 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae