Evidence row 291722

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Submits a claim and returns a signed verdict: settled against real external ground truth (GitHub PR, on-chain tx, HTTP status, JSON field, Kalshi market, or multi-exchange price consensus), Ed25519-signed, hash-chained. Free tier -- no account, no card. Returns CONFIRMED, REFUTED, or ERROR -- never a forced guess.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "agent": {
            "description": "who is asking (shown on the public reputation ledger)",
            "type": "string"
          },
          "claim": {
            "description": "the claim in plain language, e.g. \"PR #42 on owner/repo is merged\"",
            "type": "string"
          },
          "resolver": {
            "additionalProperties": {},
            "description": "which external source resolves this claim",
            "properties": {
              "type": {
                "enum": [
                  "github_pr",
                  "onchain_tx",
                  "url_json",
                  "http_status",
                  "kalshi_market"
                ],
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "agent",
          "claim",
          "resolver"
        ],
        "type": "object"
      },
      "name": "claim_verdict"
    },
    {
      "description": "Validated corporate distress-foresight score for a single equity ticker: Altman Z-score computed from live SEC XBRL filings, backtested 71% sensitivity / 100% specificity with a ~109-day median lead time, Ed25519-signed. Paid: $0.15 USDC (Base) via x402 -- no free tier. A call without an attached x402 payment returns the payment requirement, not a verdict.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "agent": {
            "description": "who is asking (shown on the public reputation ledger)",
            "type": "string"
          },
          "ticker": {
            "description": "equity ticker to score, e.g. \"AAPL\"",
            "type": "string"
          }
        },
        "required": [
          "agent",
          "ticker"
        ],
        "type": "object"
      },
      "name": "distress_score"
    },
    {
      "description": "Files a bonded dispute against a verdict receipt: the disputed verdict is re-resolved immediately against the identical resolver specification that produced it -- independent re-run, not a re-vote. An upheld dispute overturns the verdict and queues a slashable payout against the notary's on-chain correctness bond. Paid: $1.00 USDC (Base) via x402 -- no free tier. A call without an attached x402 payment returns the payment requirement (price, payTo, asset), not a verdict.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "agent": {
            "description": "who is filing the dispute (shown on the public reputation ledger)",
            "type": "string"
          },
          "receipt_hash": {
            "description": "the receipt_hash of the verdict being disputed -- must be under 48 hours old",
            "type": "string"
          }
        },
        "required": [
          "agent",
          "receipt_hash"
        ],
        "type": "object"
      },
      "name": "file_dispute"
    },
    {
      "description": "OFAC SDN sanctions name screen: matches a legal name against the OFAC Specially Designated Nationals list, with a source_as_of freshness timestamp, Ed25519-signed. Paid: $0.001 USDC (Base) via x402 -- no free tier. A call without an attached x402 payment returns the payment requirement, not a verdict.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "agent": {
            "description": "who is asking (shown on the public reputation ledger)",
            "type": "string"
          },
          "entity": {
            "description": "legal name to screen against the OFAC SDN list",
            "type": "string"
          }
        },
        "required": [
          "agent",
          "entity"
        ],
        "type": "object"
      },
      "name": "screen_entity"
    },
    {
      "description": "Independently verifies any StillOS notary receipt by its hash: confirms the hash chain is intact and the Ed25519 signature is valid. Read-only, free, no auth.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "hash": {
            "description": "the receipt_hash returned by claim_verdict or commit",
            "type": "string"
          }
        },
        "required": [
          "hash"
        ],
        "type": "object"
      },
      "name": "verify_receipt"
    }
  ]
}

What the leaf hashes

{"body":"c67c72cd573b0f5db76f3e8ad7541794d7bf723a47799af5bb5658b036193c68","id":291722,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793048278040470,"prev":null,"subject":"b6204ef9-4845-43e4-8d51-bf39a3281fd1","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. 0x2128f40afe42828c75cb22ef4219aceff1c12fa4c2ea421eabe5e1c966c7051b
2. 0xe457295b9e395b1dba1faae26e9c8cc3890b1c166cfd3d0cb2fe7dbef3be9eb2
3. 0x364f31fa570a1d337d283b856cbf98693c5d5c039795fae4c1cdba9fcd84f482
4. 0xccfe09376f1b4db57e3193ed9530e5bc802f264a018d805a02e04bd29585fe9e
5. 0x09a250042b37d551bf3bd49f155b126b1ec57def907248f856b71691d7fc5c0e
6. 0x525822f4aaadaf9cbcfd7c2126a8ad9e0ee364e256744a97e4d0400c3074e0f0
7. 0xca9082232d81fc90d57fea4f7c9df22f97fa70c8282ef7817145cc86d20d5596
8. 0x26ed6e11bd31ef075faf450a6ee6bda078bd48e41740d53dcb468506afddc981
9. 0x8ef6530824615af36b1bd7b35686e238ae98f9a507ea890d03e6d6b3df18d33c
10. 0x6487a391c112421d6d0b92e0372d1e4a5fd6afe541f565a9dde5c636d1ae4643
11. 0x71f472bb5c514dca2395c7842916e5cae63a9c622d8bc8f84b07a986c5ba91a1
12. 0xfde157310fc8513767b162378ca9ceefb2937c374b7381a8887f7ccba8ab5a80
13. 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae