Evidence row 732518

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Verify a Bitcoin address (Bech32m P2TR, Bech32 P2WPKH/P2WSH, Base58 P2PKH/P2SH): network, type, witness version, scriptPubKey hex, and common pitfalls. Never send private keys or seed phrases. Free tier: 2 calls/day per IP; after that, pass a WorkSats `creditToken` (`crd_...`), L402 header, or Base USDC `x402TxHash`.",
      "inputSchema": {
        "properties": {
          "address": {
            "description": "Bitcoin address to inspect (bc1p..., bc1q..., 1..., 3..., tb1...).",
            "type": "string"
          },
          "creditToken": {
            "description": "Optional WorkSats bearer credit token (`crd_...`) to pay 2 credits when free daily calls are used up.",
            "type": "string"
          },
          "network": {
            "description": "Expected network (default: inferred or mainnet).",
            "enum": [
              "mainnet",
              "testnet",
              "signet",
              "regtest"
            ],
            "type": "string"
          },
          "x402TxHash": {
            "description": "Optional confirmed Base mainnet USDC transfer transaction hash (`0x...`) to pay via x402.",
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "check_bitcoin_address"
    },
    {
      "description": "Validate a Bitcoin output descriptor (wpkh, wsh, tr, pkh, sh, multi, sortedmulti, raw, addr, combo): verifies or computes the 8-character BIP380 checksum, checks derivation paths and xpubs, and derives sample addresses and scriptPubKeys. Never send xprv, WIF, or seed phrases.",
      "inputSchema": {
        "properties": {
          "creditToken": {
            "description": "Optional WorkSats bearer credit token (`crd_...`) to pay 2 credits when free daily calls are used up.",
            "type": "string"
          },
          "deriveCount": {
            "description": "Number of wildcard addresses to derive from index 0 (0..5, default: 3).",
            "maximum": 5,
            "minimum": 0,
            "type": "integer"
          },
          "descriptor": {
            "description": "Public output descriptor string (with or without `#checksum`).",
            "type": "string"
          },
          "network": {
            "description": "Network for derived addresses (default: mainnet).",
            "enum": [
              "mainnet",
              "testnet",
              "signet",
              "regtest"
            ],
            "type": "string"
          },
          "x402TxHash": {
            "description": "Optional confirmed Base mainnet USDC transfer transaction hash (`0x...`) to pay via x402.",
            "type": "string"
          }
        },
        "required": [
          "descriptor"
        ],
        "type": "object"
      },
      "name": "check_descriptor"
    },
    {
      "description": "Inspect an unsigned or partially signed Bitcoin PSBT (BIP174 base64 or hex) before signing: decodes inputs, outputs, fee, fee rate (sat/vB), change detection, sighash types, taproot/witness scripts, and flags high-fee or missing-prevout risks. Never send private keys or seed phrases.",
      "inputSchema": {
        "properties": {
          "creditToken": {
            "description": "Optional WorkSats bearer credit token (`crd_...`) to pay 2 credits when free daily calls are used up.",
            "type": "string"
          },
          "network": {
            "description": "Expected network (default: mainnet).",
            "enum": [
              "mainnet",
              "testnet",
              "signet",
              "regtest"
            ],
            "type": "string"
          },
          "psbt": {
            "description": "PSBT in base64 (`cHNidP8...`) or hex (`70736274ff...`).",
            "type": "string"
          },
          "x402TxHash": {
            "description": "Optional confirmed Base mainnet USDC transfer transaction hash (`0x...`) to pay via x402.",
            "type": "string"
          }
        },
        "required": [
          "psbt"
        ],
        "type": "object"
      },
      "name": "check_psbt"
    },
    {
      "description": "Manage WorkSats bearer credits (`crd_...`): check `balance`, `split` credits to pay another bot, `rotate`/`merge` received tokens so the sender cannot double-spend, `mint` credits from L402 or x402 Base USDC, `bounty_create` to escrow credits for a verifiable task (`sha256`, `descriptor_derive`, `address_script`, `psbt_feerate`, `json_schema`), or view clearinghouse `stats`.",
      "inputSchema": {
        "properties": {
          "action": {
            "description": "Clearinghouse operation to run.",
            "enum": [
              "balance",
              "split",
              "rotate",
              "merge",
              "mint",
              "bounty_create",
              "stats"
            ],
            "type": "string"
          },
          "amount": {
            "description": "Credits to split into a new child token (for `action=\"split\"`).",
            "minimum": 1,
            "type": "integer"
          },
          "expected_sha256": {
            "description": "64-hex SHA-256 of the expected canonical answer (for `action=\"bounty_create\"` with `verification_mode=\"sha256\"`).",
            "type": "string"
          },
          "fee": {
            "description": "Clearinghouse fee in credits (default: 1, for `action=\"bounty_create\"`).",
            "minimum": 1,
            "type": "integer"
          },
          "prompt": {
            "description": "Deterministic bounty task prompt up to 2000 chars (for `action=\"bounty_create\"`).",
            "type": "string"
          },
          "reward": {
            "description": "Bounty reward in credits (for `action=\"bounty_create\"`).",
            "minimum": 1,
            "type": "integer"
          },
          "token": {
            "description": "Bearer credit token (`crd_...`) for `balance`, `split`, `rotate`, or `bounty_create`.",
            "type": "string"
          },
          "tokens": {
            "description": "Array of 1..10 `crd_...` tokens for `merge`/`rotate`.",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "verification_mode": {
            "description": "Verification mode for `bounty_create` (default: `sha256`).",
            "enum": [
              "sha256",
              "descriptor_derive",
              "address_script",
              "psbt_feerate",
              "json_schema"
            ],
            "type": "string"
          },
          "verification_params": {
            "description": "Parameters for deterministic verification (`descriptor_derive`, `address_script`, `psbt_feerate`, or `json_schema`) when buyer does not precompute `expected_sha256`.",
            "type": "object"
          },
          "x402_tx_hash": {
            "description": "Confirmed Base mainnet USDC transfer txHash (`0x...`) to mint credits (`action=\"mint\"`).",
            "type": "string"
          }
        },
        "required": [
          "action"
        ],
        "type": "object"
      },
      "name": "worksats_credits"
    },
    {
      "description": "Fetch an open buyer-funded bounty task or a deterministic house micro-task (`descriptor_checksum_and_derive`) from the WorkSats clearinghouse (`GET /v1/tasks/next`). Solve it and call `worksats_solve_task` to mint bearer credits (`crd_...`).",
      "inputSchema": {
        "properties": {
          "exclude": {
            "description": "Optional comma-separated hex task IDs to skip.",
            "type": "string"
          },
          "id": {
            "description": "Optional specific hex bounty task ID to claim.",
            "type": "string"
          },
          "type": {
            "description": "Filter for deterministic `house` task (4 credits) or buyer-funded `bounty` task.",
            "enum": [
              "house",
              "bounty"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "worksats_get_task"
    },
    {
      "description": "Submit a solved WorkSats task ticket (`tsk_...`) to mint a signed bearer credit token (`crd_...`). For house tasks, provide `checksum` and `scriptPubKeys`; for bounty tasks, provide `answer` or mode-specific fields (`addresses`, `address`, `scriptPubKey`, `feeSats`, `inputCount`, `outputCount`, `data`).",
      "inputSchema": {
        "properties": {
          "address": {
            "description": "Bitcoin address (for `address_script` bounty tasks).",
            "type": "string"
          },
          "addresses": {
            "description": "Derived Bitcoin addresses (for `descriptor_derive` bounty tasks).",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "answer": {
            "description": "Canonical answer string (for `sha256` buyer-funded bounty tasks).",
            "type": "string"
          },
          "checksum": {
            "description": "8-character BIP380 checksum (for house or `descriptor_derive` tasks).",
            "type": "string"
          },
          "data": {
            "description": "Structured JSON solution object (for `json_schema` bounty tasks).",
            "type": "object"
          },
          "feeSats": {
            "description": "Decoded PSBT fee in sats (for `psbt_feerate` bounty tasks).",
            "type": "integer"
          },
          "inputCount": {
            "description": "Decoded PSBT input count (for `psbt_feerate` bounty tasks).",
            "type": "integer"
          },
          "outputCount": {
            "description": "Decoded PSBT output count (for `psbt_feerate` bounty tasks).",
            "type": "integer"
          },
          "scriptPubKey": {
            "description": "Hex scriptPubKey (for `address_script` bounty tasks).",
            "type": "string"
          },
          "scriptPubKeys": {
            "description": "Derived scriptPubKey hex strings (for house or `descriptor_derive` tasks).",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "ticket": {
            "description": "Signed task ticket (`tsk_...`) from `worksats_get_task`.",
            "type": "string"
          }
        },
        "required": [
          "ticket"
        ],
        "type": "object"
      },
      "name": "worksats_solve_task"
    }
  ]
}

What the leaf hashes

{"body":"c379e77cd43dd200bc18eb99064e898367c1c165b220cb2d34063def6aeb87d5","id":732518,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793154986432171,"prev":null,"subject":"6415172d-252b-454c-b3a0-325f1a7c8ee5","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. 0x2a74796c078913887812db4b6179f5e19501f3143ea184e23c6090263fed0deb
2. 0x08f8b746c3bc4417214d4fe4bb4bd0c0c4781c4d549c8cf408a9c46ba6aa4c72
3. 0x135e187343fb283d32d4ee57d17493e975339c12b2f55ac0ba79c34ff5d1ac16
4. 0xe22d8936628cfaa96f6010f18514ad6ee568f0b8fa71724910a3ae5bdb328981
5. 0x757444b4e02a6f952c9ad1ec14495934537e93885b6aa11b7c61e56ee3a15bde
6. 0xbdfb649968c7da971d0f803025dc0bca5aa690ec97f67d1e3b6c505d46801378
7. 0x968e3d3db7bf87e411369e3d74edb08e956324a08bca5946b7ed74a01ebfa573
8. 0x47d0c46f5a4f2d63a69f81c11a92c84970239488fd3b95b4e6d192d6d3f6fec5
9. 0x28b3b23c897e157e50c64c3fa5ddf23be446d069e9e0926db594c6b90387175d
10. 0xc29ad1594e64bcc44c3f35988744f6ed8c883beac85ffc8ffde3696186ebe540
11. 0x2805952a76b9e4ef6b78da7010d6131b6156ea692f0701a27888c7ae8f5b4faf
12. 0xae2f918af9b34029f2b8eff4bca9e873258938d25391eb92ba50e6d0eb5cd8df
13. 0x34e8921023105d1b4efc95c5f5f5debe65fd903bd04b069da2922111cc422fdf
14. 0x5c170d609340e1f702f31fcdd7742289f0913d4395f688b3409031b758c69eae
15. 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae