Evidence row 2201891

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://finance-calculators.x402tookit.com/compound-interest"
    ]
  ],
  "name": "Finance Calculators",
  "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": "Future value of savings with compounding and monthly contributions: balance, contributions, interest earned, by year.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "annual_rate_pct": 5,
              "compounds_per_year": 12,
              "monthly_contribution": 0,
              "principal": 10000,
              "years": 10
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T03:59:14.474Z",
              "byYear": [
                {
                  "balance": 10511.62,
                  "year": 1
                },
                {
                  "balance": 11049.41,
                  "year": 2
                }
              ],
              "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.",
              "futureValue": 16470.09,
              "interestEarned": 6470.09,
              "multipleOfContributions": 1.647,
              "notChecked": [
                "taxes",
                "fees",
                "…2 more"
              ],
              "reasons": [
                "Nominal growth, compounding 12 times a year; monthly contributions are spread across compounding steps."
              ],
              "source": "computed locally",
              "summary": "$10,000.00 at 5% for 10 years grows to $16,470.09: contributions $10,000.00, interest $6,470.09.",
              "totalContributed": 10000,
              "verdict": "COMPUTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "annual_rate_pct": {
                      "description": "Annual rate in percent",
                      "type": "number"
                    },
                    "compounds_per_year": {
                      "description": "Default 12",
                      "type": "integer"
                    },
                    "monthly_contribution": {
                      "description": "Added each month, default 0",
                      "type": "number"
                    },
                    "principal": {
                      "description": "Starting amount",
                      "type": "number"
                    },
                    "years": {
                      "description": "Years",
                      "type": "number"
                    }
                  },
                  "required": [
                    "principal",
                    "annual_rate_pct",
                    "years"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "byYear": {
                      "items": {
                        "properties": {
                          "balance": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "year": {
                            "type": [
                              "null",
                              "number"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "futureValue": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "interestEarned": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "multipleOfContributions": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "totalContributed": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:54:32.346Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:54:32.036Z"
    },
    "resource": "https://finance-calculators.x402tookit.com/compound-interest",
    "serviceName": "Finance Calculators",
    "tags": [
      "compound-interest",
      "savings",
      "investing"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Future value of savings with compounding and monthly contributions: balance, contributions, interest earned, by year."
}

What the leaf hashes

{"body":"f4ac34d10d97e9dddaec30542d8481d8e68eb163c6019964e4db139756daeee9","id":2201891,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810066959,"prev":null,"subject":"x402_bazaar:https://finance-calculators.x402tookit.com/compound-interest","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. 0x004bab611b1fc2e8b1a37635b4e64e1a005f9b80de3e87cc0625eea2d9e3bd20
2. 0x01be5b813928f7e41c73c12cc9fd8a3a779fe3afd95f794da51c7860abb449b7
3. 0x8938557f20d638b77eafaf3252be29d7c6a81160ffa99d00f7a22764aded78dc
4. 0x1453ce87b82ad8e4cbf836eb0f5bbf418591a855180a932d36876c3ed8c7f6c3
5. 0x579745fa0a4886097f2fabd9375d18c88e0e82abf37adab048ad3aa77091fb90
6. 0x4d30e60632af31c7904c0f60b801aa70a2078deb854ddd705bcb32ff0542bbb1
7. 0x621fc60b30c70786716a9e05c9b5e5e4ea7d118fcaf0b134ea05ec66d5f42b6b
8. 0x88ac8bb8857164e9a1f758c180016622d1fb9baaaf0c7b89275bf743edf1b953
9. 0x395b833ac43bf62c6ad8e60c83b2b78fe5fdeb42211f2123887986f16dcdb251
10. 0x28ac26c0df7caa3ad574e5cd1bd9606ce8f45c63bd184f00260e7b08b2456dd4
11. 0x5939eb972cc141b631914a360ee548402c9141ccca1780ea3ca8a3cb37784275
12. 0x65c4fed8aabb2a2a2c39a5fe7d7ead0ca6133b2439bf808bb16adcf998ac7db7
13. 0x9ccfa562467b683727533a101c56f2ec1b15d392976c5a1d03db8b6563b90233
14. 0x9acdcc385ecc9f1094faf2e01677d863638d23bede5aed4ca22def76698e0af3
15. 0x150a4dbcf309a6bb857da0b59f7588bd57a20fca094e579bf41d6cc6df9c7bff
16. 0x7cb861d18f06406535ade133f716d897f27d257cf0121f99d94c78c713c4b54d
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af