Evidence row 2201772

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://grades-calc.x402tookit.com/weighted-grade"
    ]
  ],
  "name": "Grades & Study Calc",
  "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": "Overall class grade from categories or assignments with scores, maximums and weights, normalizing weights that do not total 100.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "items": "[{\"name\":\"Homework\",\"score\":90,\"max\":100,\"weight\":40},{\"name\":\"Exams\",\"score\":80,\"max\":100,\"weight\":60}]"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-12T01:53:43.327Z",
              "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.",
              "gpaPoints": 3,
              "highestItem": "Homework",
              "items": [
                {
                  "name": "Homework",
                  "percent": 90,
                  "pointsContributed": 36,
                  "weight": 40
                },
                {
                  "name": "Exams",
                  "percent": 80,
                  "pointsContributed": 48,
                  "weight": 60
                }
              ],
              "letter": "B",
              "lowestItem": "Exams",
              "notChecked": [
                "dropped lowest scores and category caps",
                "teacher rounding rules",
                "…1 more"
              ],
              "overallPercent": 84,
              "reasons": [],
              "source": "computed locally (sum of weight x score/max, divided by total weight)",
              "summary": "Overall 84% (B) from 2 item(s).",
              "verdict": "COMPUTED",
              "weightsNormalized": false,
              "weightsTotal": 100
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "items": {
                      "description": "JSON array of up to 50 objects like {\"name\":\"Homework\",\"score\":45,\"max\":50,\"weight\":20}; max defaults to 100",
                      "type": "string"
                    }
                  },
                  "required": [
                    "items"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "gpaPoints": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "highestItem": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "items": {
                      "items": {
                        "properties": {
                          "name": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "percent": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "pointsContributed": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "weight": {
                            "type": [
                              "null",
                              "number"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "letter": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "lowestItem": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "overallPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "weightsNormalized": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "weightsTotal": {
                      "type": [
                        "null",
                        "number"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:26:42.183Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T23:26:42Z"
    },
    "resource": "https://grades-calc.x402tookit.com/weighted-grade",
    "serviceName": "Grades & Study Calc",
    "tags": [
      "grades",
      "weighted-average",
      "school",
      "gradebook"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Overall class grade from categories or assignments with scores, maximums and weights, normalizing weights that do not total 100."
}

What the leaf hashes

{"body":"95cd3c2762032bd77bd5da7554c39889dce124fae41a9e7e66981a1a59b85876","id":2201772,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646808849030,"prev":null,"subject":"x402_bazaar:https://grades-calc.x402tookit.com/weighted-grade","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. 0x0ce5e91472524ddcdc6150bd46aa72e9d80572b1ca6d21e2f4b07e5849101d9e
2. 0x526faca93900e5140ab86bbbc31d17a48df32c09ff43e8911b9ede18d079e0bb
3. 0xeaf81c2506a2f0b8af15f13244c9cf5650320e5ff5659280c16359641b95fbd1
4. 0x674cd88c6d53b5c9568d115d24c503af50cdc2e60432c90d583ab93099402fc3
5. 0x3b872cd10053679a4b1559f66e82738c7b82531f635e0163cfbd949fb9ae4d70
6. 0xb4f68c7f98320938abe220254cc2ed1ebaed176eb3195acdf4e8d6e1cc8e36c3
7. 0x42ff988d067d85f7455b068bdc44b64f24c726609e93812980038cbfad21bac9
8. 0x98467802ab2b259c03ccd4a96d41c26b91394f35031f4e4f511efc2979d360cc
9. 0x0e50b5a4ac2d8aebe226d54ea202ce62c59833403c5d3b9e4748b2542d6811f0
10. 0x5dce64331fa8254f5b216a42bb47bf733020de9066522f91721d4dec1dae7c40
11. 0x164f9b046f88959387eede61efb5d85ad5ebd742896415aef097abbdb6989c9d
12. 0x5ab1a0e263d75fe8c3b85060a6cca1c534560cbb1cc844fb2b62f0bce0628b74
13. 0x21862012011e9c7bd96b9da5758a45e44049f740c8ef1f280b01bc054552ce7e
14. 0xdd12fe6a2b0c972fe8b92369b1535a7d883c9e1085b61ddaf4130d8880afad75
15. 0xd82979c12a2aae44121bb6058b3364b3a3cbc9be411e35ab0208df5ed56f65d4
16. 0x7cb861d18f06406535ade133f716d897f27d257cf0121f99d94c78c713c4b54d
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af