Evidence row 2201776

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://puzzle-solvers.x402tookit.com/sudoku-validate"
    ]
  ],
  "name": "Puzzle Solvers",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Check a 9x9 sudoku grid for repeated digits by row, column and box; says if it is legal, complete or solved.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "grid": "534678912672195348198342567859761423426853791713924856961537284287419635345286179"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-21T01:31:33.741Z",
              "blanks": 0,
              "complete": true,
              "conflictCount": 0,
              "conflicts": [],
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "filled": 81,
              "legal": true,
              "notChecked": [
                "whether a legal incomplete grid can still be finished: use /sudoku-solve for that",
                "whether the puzzle is unique"
              ],
              "reasons": [],
              "solved": true,
              "source": "sudoku rules (each row, column and 3x3 box holds 1-9 once), computed locally",
              "summary": "Complete grid with every row, column and box holding 1-9 exactly once.",
              "verdict": "SOLVED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "grid": {
                      "description": "81 cells row by row: digits 1-9, 0 or . for blank; whitespace ignored; at most 400 characters before whitespace is removed",
                      "type": "string"
                    }
                  },
                  "required": [
                    "grid"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "blanks": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "complete": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "conflictCount": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "conflicts": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "filled": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "legal": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "solved": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:26:20.085Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T23:26:19.806Z"
    },
    "resource": "https://puzzle-solvers.x402tookit.com/sudoku-validate",
    "serviceName": "Puzzle Solvers",
    "tags": [
      "sudoku",
      "validator",
      "puzzle"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check a 9x9 sudoku grid for repeated digits by row, column and box; says if it is legal, complete or solved."
}

What the leaf hashes

{"body":"2144b141cbd67a9ae42ea24b5c9c12e7413319f5f77aa34c7514e76f17516596","id":2201776,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646808862700,"prev":null,"subject":"x402_bazaar:https://puzzle-solvers.x402tookit.com/sudoku-validate","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xdf0f9b9a6ffe1b4ef5d6cc5b02fd67e4e92c4ac44281d0fe8ec378b8df2b59ca
2. 0x696804bd6584be2bcb14e27cd9c67704a8a309296ccf721192048d535dd0e4bb
3. 0x5ab8fab54dc2720b27a767708f603e0acd609a401f045e84eecc7c607544d335
4. 0x75f0084abd2a964f2198a8d6fb329d5964fa728e9cec9bb60dde91f1f62090ee
5. 0x2b6d9ae68ed6a91752ed7df4a1ab9313862f0cc2fff627014729d8c918c27c1c
6. 0xe31dcdf37fc9a738ebcab50347d7124d7e5d6fbb84a84e693fdad156163f6c9f
7. 0x0dec3fe41ff4892eef1793f66c4a1f3545636c4414b800c40d728798dadda145
8. 0xca995de023799737f198f79fe73422af4fc3cc323082e8b44df81221f5db9856
9. 0xb697ebc658992728c3134e65347eb097682aefc9d80d7d1d2225b2f6fc3491b0
10. 0x1aa002e25c38397d6c1c854e2f42911c07f1c14801bd39433418fbc2f723adda
11. 0x7e452b6a4dea768ccff53550a65b90d8c6f2277724d0b7b1eece1f2b2b700be5
12. 0x658a03e3df61154a1a62d12a3aee91c196f7b3be59438a13e42a6796e2adca05
13. 0x1cd421f1e0b0be98fab8392181e25435047bd7c44fcbda07fa5cd27615d6b674
14. 0x5dd75981e1af83dc5ec1e2b8a2959012484cc3ea2e0defded2187a5a93ba7236
15. 0xa370e8e015a32408a8112e54e5f40a8a65e871bd52bbc6f25fbd1139f2ba5b11
16. 0x7ddefa7d79e7640c3fed21ee4472689415182c41a0258ab04a81d60495f4c40a
17. 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af