Evidence row 266804

What was observed

{
  "count": 1,
  "tools": [
    {
      "description": "Japan daily-life official figures, verified against the official pages, by category: minimum-wage (地域別最低賃金 FY2026, hourly, 47 prefectures by romanised key such as tokyo or osaka plus national-weighted-average, each with its own effectiveFrom between 2026-10-01 and 2026-12-02 and the FY2025 amount as previous), health-insurance (協会けんぽ 都道府県単位保険料率 FY2026 by prefecture, employer + employee combined, with the FY2025 rate as previous; long-term-care 介護保険料率 for ages 40–64; child-rearing-levy 子ども・子育て支援金率 from April 2026), pension (kosei-nenkin-rate 厚生年金保険料率, kokumin-nenkin-premium 国民年金保険料 FY2026 and FY2027, kiso-nenkin-full-monthly 老齢基礎年金 満額), employment-insurance (雇用保険料率 FY2026, employee / employer / total per 1,000, three business types), benefits (児童手当 monthly amounts, 出産育児一時金, 高額療養費 ceilings for under-70s before August 2026, August 2026 – July 2027 and from August 2027), holidays (国民の祝日 2027), consumption-tax (10% and 8%, national and local portions), income-tax (基礎控除 table for 2024 to 2028+, 給与所得控除 tables for 2025 and 2026) and resident-tax (均等割 and 森林環境税). Each figure carries its value, unit, the Japanese term, the quoted row from the page, its source URL and effectiveFrom (and effectiveTo where the source states an end); the answer carries verifiedDate, freshness and a citation permalink. No category returns the listing; an unknown category answers covered:false with the nearest keys.",
      "inputSchema": {
        "properties": {
          "category": {
            "description": "one of: minimum-wage, health-insurance, pension, employment-insurance, benefits, holidays, consumption-tax, income-tax, resident-tax (omit to list all)",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "jp_living_costs_lookup"
    }
  ]
}

What the leaf hashes

{"body":"9e2cfd62b0f28a2a13af43fc346ffed08815cb22b2ce2d30089a7f2f0aba1527","id":266804,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793035546512366,"prev":null,"subject":"83f94f95-9002-4398-962d-b41b0a55829a","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. 0x72d59eff5a199d4821e0b87a24e861ae729fd7fd34c006ab03f8758945c38c7f
2. 0x253e451034ca0079bbcd880fef79f0894f49a0d3bddd4bcf4dac03d91672f158
3. 0xec9b4dd1001b6b6ce75640bef0623db007dbb59930cf706c7466c0456ab37e4d
4. 0x28a13d5a99622b95f2ffe83fb1d8eaece306b45c7e8dea48edb6efeae198ef91
5. 0xcbc2f53d1a24cba3ec50e9ffba1eb08c09be7e3d65ced3c1ae367c262c26c3f7
6. 0x45a3bc9f7b1dab6fccf8001bd6e6e1af68223b302f4f9d7ce9fdc1126e86543f
7. 0xa182cec0489b25c704e1af683bffab3b25b9a083869216d4aae3f4a4a2636b1c
8. 0x1a1b06347a650fa523f8390a69367f1596615582dfdd8aa95479f8eca291b37f
9. 0x7459f654e3deb4daa7554739b67f789eb49794526fe128ad87d04e63bc2da617
10. 0xfec618220a4577d4063b5b2d1736f3db0d758d4b39800128bc55fe3318ff8373
11. 0x9763a000e2506d3e18d36911968fe32044769ec0822949b880df4736389d3536
12. 0xef1802ec08c5a2efaca6aadccc58edcebeb620a019383dc0785f198c677a9427
13. 0x06064dc1eb2363bec8c2a752e0a28aafc4bf0cb21d1b1b755821c1575bb77a96
14. 0xc4fe2177880ea1b0e82b6fe4c270090fd0fbe5af3a42a8cbf6a6ba2fa35625f6
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae