Evidence row 116712

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mart402.com/v1/jp-social-insurance"
    ]
  ],
  "name": "Mart402",
  "owner_address": "0xe3244a21d0d68bfa78b7cad8c3b8777adfbb3188",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xE3244a21D0d68bFa78b7CAd8C3b8777aDFbB3188",
        "scheme": "exact"
      }
    ],
    "description": "Japan social insurance premiums: monthly remuneration to grade + health/care/pension/employment premiums from the official Kyokai-Kenpo FY2026 grade table, all 47 prefectures, official rounding. $0.01/call.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "age": 35,
              "monthly_remuneration_yen": 300000,
              "prefecture": "tokyo"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "description": "JSON: grade, standard monthly remuneration, health/care/pension/employment premiums, total, sources",
            "example": {
              "as_of": "2026-10-16",
              "assumptions": [],
              "billable": true,
              "breakdown": [],
              "carried_forward": [],
              "disclaimer": "仮定条件に基づく概算試算。税務相談・手続代行・法律相談ではない。申告・届出への使用不可。確定額は官公署または税理士・社会保険労務士等に確認のこと。",
              "not_covered": [
                "labor insurance の業種別特例(建設・農林以外)",
                "健康保険組合(協会けんぽ以外)",
                "厚生年金基金・企業年金",
                "国民健康保険・国民年金",
                "産休育休免除・随時改定(月変)・定時決定の細目"
              ],
              "note": "SAMPLE RESPONSE generated by the exact deterministic engine that serves production (jp-statutory has no LLM: same input always produces this byte-identical result, carrying the same rules_version and cited primary sources). Served free at /samples/{product} so you can verify the response shape, the rules_version field and the source citations before paying. No payment was taken. The sample_input shown is the catalog example input that produced this output.",
              "ok": true,
              "result": {
                "child_care_support_yen": 345,
                "employment_insurance_yen": 1500,
                "grade": 22,
                "health_yen": 14775,
                "long_term_care_yen": 0,
                "pension_standard_monthly_yen": 300000,
                "pension_yen": 27450,
                "rounding_mode": "deduct_from_salary",
                "standard_monthly_yen": 300000,
                "total_yen": 44070
              },
              "rules_version": "2026.10.16",
              "sample": true,
              "sample_input": {
                "age": 35,
                "monthly_remuneration_yen": 300000,
                "prefecture": "tokyo"
              },
              "sources": [
                "https://jsite.mhlw.go.jp/yamanashi-roudoukyoku/koyouhoken_R8.html",
                "https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/rate_prefectures/r08/index.html",
                "https://www.kyoukaikenpo.or.jp/assets/R8_13tokyo.pdf",
                "https://www.nenkin.go.jp/service/kounen/hokenryo/ryogaku/ryogakuhyo/20200825.files/R08ryougaku.pdf"
              ],
              "summary": "報酬月額300,000円 -> 標準報酬月額300,000円(22等級)、本人負担合計44,070円/月",
              "tool": "jp-social-insurance",
              "unverified_rules": []
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "age": {
                      "type": "number"
                    },
                    "monthly_remuneration_yen": {
                      "type": "number"
                    },
                    "prefecture": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "acceptIndex": 0,
              "format": "jws",
              "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6bWFydDQwMi5jb20ja2V5LTEifQ.eyJhbW91bnQiOiIxMDAwMCIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIiwicGF5VG8iOiIweEUzMjQ0YTIxRDBkNjhiRmE3OGI3Q0FkOEMzYjg3NzdhREZiQjMxODgiLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vbWFydDQwMi5jb20vdjEvanAtc29jaWFsLWluc3VyYW5jZSIsInNjaGVtZSI6ImV4YWN0IiwidmFsaWRVbnRpbCI6MTc5MjU1OTEzNSwidmVyc2lvbiI6MX0.nlClQ4fksXu6DxOE_IoFxSt9YRanVcpccMCTJlwFEBJzoAKcp-CpZLbQvzfPJLbckjp4g77tX6nQIkGhB_GrCg"
            }
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "offers": {
              "items": {
                "properties": {
                  "acceptIndex": {
                    "type": "integer"
                  },
                  "format": {
                    "const": "jws",
                    "type": "string"
                  },
                  "signature": {
                    "description": "JWS compact serialization containing the offer payload",
                    "type": "string"
                  }
                },
                "required": [
                  "format",
                  "signature"
                ],
                "type": "object"
              },
              "type": "array"
            }
          },
          "required": [
            "offers"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-21T05:00:35.379Z",
    "quality": {
      "l30DaysTotalCalls": 10,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-21T05:00:35.279Z"
    },
    "resource": "https://mart402.com/v1/jp-social-insurance",
    "serviceName": "Mart402",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Japan social insurance premiums: monthly remuneration to grade + health/care/pension/employment premiums from the official Kyokai-Kenpo FY2026 grade table, all 47 prefectures, official rounding. $0.01/call."
}

What the leaf hashes

{"body":"8c0d3946cf370c32e9b32cdbf9c3258285700792bc0b420bd9cba41e86e95ffe","id":116712,"kind":"listing","method":"baseline/1","observed_us":1793025610194948,"prev":null,"subject":"x402_bazaar:https://mart402.com/v1/jp-social-insurance","subject_kind":"source_record"}

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. 0xe42bf7667b568fc0fd994541c4c41d3fa82788f10e5cac0e7d7e365196e5dc27
2. 0x88059b393c15b88130af4a776ebbf0ac7e37aa87f3463b2572bf752df541446a
3. 0x9f40d5106ae0ec8d38fa5834ad4ae424487dd92f614119e2ae167dd3178b037d
4. 0x69039dc681072c62a970e52ee5735f5de2ab5377752c9eb796bf17f53045ea15
5. 0x24d7e3ae4f731edebf722dbe13503e2cf7b13fd54f0307bfb8b50714f3023f1b
6. 0xa0cff26f78dc356f13122ce1404e2f76f62ec4170daa501ef654dde82442e13d
7. 0xadcc4ea249b0facc5f0eb10f4cbd7bd6d87ff5935e846390d37833a4fa40b452
8. 0xb36fa3b3bfd0cdc175102c84d5c20dee3f65b7e757b70a3408f08e6a70eadf6b
9. 0x444a7376940e2830bf72adff90bc8741426d1d746343c45469f2b29d6ccebab3
10. 0x15726dc36d12291b4937cc1d22f325d4939ad46dd10d4e44468a88a8cc8329ed
11. 0x162e0da99198c9cdc9c43bf4626e85f4a7092fdb31ea15c7126e1f98b20eaa56
12. 0x2fc38b57208d692aab1ee89b6e26917df292126314027c27360c5644a63fd0bc
13. 0xc0924a0807e534382f518663123231c317124338831a2b310de2c17b09677086
14. 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae