Evidence row 257366

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Full raw record of one Japanese subsidy / grant program: sponsor, maximum grant amount, subsidy rate, eligible industries and application window. Paid via x402: each call costs 0.05 USDC. This tool returns the HTTP 402 payment challenge for the resource. Private beta note: a successful settlement is acknowledged with a receipt that records your priority access; the dataset itself unlocks for early settlers as provisioning goes live.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "subsidy_id": {
            "description": "Subsidy program ID: live jGrants id from search_subsidies (e.g. a0WJ200000CDanIMAT), or sample S-2026-NNNN",
            "type": "string"
          }
        },
        "required": [
          "subsidy_id"
        ],
        "type": "object"
      },
      "name": "get_subsidy_program"
    },
    {
      "description": "Full raw record of one Japanese public-sector open tender notice: agency, region, category, publication date, submission deadline and specification summary. Paid via x402: each call costs 0.05 USDC. This tool returns the HTTP 402 payment challenge for the resource. Private beta note: a successful settlement is acknowledged with a receipt that records your priority access; the dataset itself unlocks for early settlers as provisioning goes live.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "tender_id": {
            "description": "Tender notice ID in the form T-2026-NNNN, e.g. T-2026-0117",
            "type": "string"
          }
        },
        "required": [
          "tender_id"
        ],
        "type": "object"
      },
      "name": "get_tender_notice"
    },
    {
      "description": "Free catalog lookup. Lists the raw Japanese public-sector business-opportunity datasets on this gateway (open tender notices, subsidy programs, procurement sanction lists) with per-call x402 pricing (0.05 USDC per call). Use the search/get tools or the returned api_url to retrieve data.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "list_opportunity_datasets"
    },
    {
      "description": "FREE — returns live data. Search nationwide Japanese public-sector tender notices (官公需情報ポータルサイト検索API) by keyword: title, agency, region, category, notice text excerpt and the original document URL. keyword (min 2 chars) is required; region is folded into the query. Attribution included.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "deadline_within_days": {
            "description": "Only tenders whose submission deadline falls within N days",
            "maximum": 365,
            "minimum": 1,
            "type": "integer"
          },
          "keyword": {
            "description": "Free-text keyword, e.g. 空調 or AI チャットボット",
            "type": "string"
          },
          "region": {
            "description": "Region filter, e.g. tohoku, kanto",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_open_tenders"
    },
    {
      "description": "Look up suspension-of-nomination (指名停止) and administrative action records for one Japanese corporate number (法人番号). Paid via x402: each call costs 0.05 USDC. This tool returns the HTTP 402 payment challenge for the resource. Private beta note: a successful settlement is acknowledged with a receipt that records your priority access; the dataset itself unlocks for early settlers as provisioning goes live.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "corporate_id": {
            "description": "13-digit Japanese corporate number (法人番号), e.g. 9010001054321",
            "type": "string"
          }
        },
        "required": [
          "corporate_id"
        ],
        "type": "object"
      },
      "name": "search_sanctions"
    },
    {
      "description": "FREE — returns live data. Search currently-open Japanese subsidy and grant programs (jGrants 公開API) by keyword: titles, deadlines, max amounts, target areas. keyword (min 2 chars) is required. Attribution included.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "deadline_within_days": {
            "description": "Only programs whose application window closes within N days",
            "maximum": 365,
            "minimum": 1,
            "type": "integer"
          },
          "industry": {
            "description": "Industry filter, e.g. manufacturing, tourism",
            "type": "string"
          },
          "keyword": {
            "description": "Free-text keyword, e.g. 省力化 or 観光",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_subsidies"
    }
  ]
}

What the leaf hashes

{"body":"f04ae04e46dd3302e1b2295c315557f9a8ecd8a3b7a051e1722369af49271c80","id":257366,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029705685523,"prev":null,"subject":"47392fbd-1fcf-48dd-883a-cb5ba6d76da2","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. 0x8f6e5d85b654e213384a1dba733db8de3ca9544815abf81c5befaa62fe95b35c
2. 0xc6030b5ca88c65f948e526968dfac74b4a7aa3ad06851b9cb92996b3666b9dfe
3. 0xeec64ea1e5bad6dd8dbbe1bef42ee4999fe8e71b37e725bf63c0374152ab3856
4. 0xca82c0da173f0e17e6db94dcc72c22daf3bed050541e955944ac847e464e7cd9
5. 0x8342a2506583f92dbb9a5eea5b66f35af0f2e41396804aa4b3361a6d19bce893
6. 0x816ec7d79313e8db23b4de9f622004d2017380ccc98794b5965ebbfe19919d23
7. 0x3b90168af0bda961397f47c36b203a201ae77a9928634216951c26052c053dff
8. 0xdf1f64040a9e745875f4a4d03529c8cbfc7ce9df30b308e5ec55be0e2e8ed639
9. 0x1d4ae0199a8d8a8087159b77999493f7543e255ef0b3188fbc84e95598dd83d2
10. 0x8665760a589b1324397302f9a49dc33b42b22f68a2e06cfa1d55ff2fcfa7305c
11. 0x4ef4c3a70c6b26977cbaf534a1ab9edcc651b2d385e682cd5a3f54a060ec0018
12. 0x4634efb8094d1dd2874013b832ad8653e49400f57bf98efdcc5f925ed08d0f5b
13. 0xc0cb184c9bdf71abcf18fda97bd59289153d120dbf8fee9f517b63bf303deb95
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae