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Evidence row 120772

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/util/fx
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
f7782e5b3b53f7ac7ea1c68a2f7b687ee3d087c73fb27d62b4dff23c55097f6d
Leaf
0x78656cf2e940b7290f05b5d2c3452d3d820ca2a19fcce32ed402c00645e3dd17

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/util/fx"
    ]
  ],
  "name": "Saylor Innovations Real-World Ut",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:util:fx",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:util:fx",
          "name": "USD Coin",
          "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:util:fx",
          "name": "USD Coin",
          "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "memo": "saylor:util:fx",
          "reference": "8uSMgUB6971Gzt3ftwn6cCHEcB8KBNVt2XAEkKB7UGqk",
          "session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmZ4IiwicmVmZXJlbmNlIjoiOHVTTWdVQjY5NzFHenQzZnR3bjZjQ0hFY0I4S0JOVnQyWEFFa0tCN1VHcWsiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ4ODI5MjgxOX0.dZCbKEmJ0yXhWYIxmz8OFIFh_S15QVXzU4Jze6tNERA"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "memo": "saylor:util:fx",
          "reference": "6Jx1ti4u6rp5PfaHAqSsq3ccDv3VFuin8iR7grzHCdUx",
          "session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmZ4IiwicmVmZXJlbmNlIjoiNkp4MXRpNHU2cnA1UGZhSEFxU3NxM2NjRHYzVkZ1aW44aVI3Z3J6SENkVXgiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ4ODI5MjgxOX0.g7tV1grUitsA1136IPmvwrqa5shyUjXh-4LalSjBiyY"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93152",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:util:fx",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "96033",
          "reference": "EgQDPN15hXudJPqRd4e7NJxdjctvaAy7XnDtAa7E6HA5",
          "session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmZ4IiwicmVmZXJlbmNlIjoiRWdRRFBOMTVoWHVkSlBxUmQ0ZTdOSnhkamN0dmFBeTdYbkR0QWE3RTZIQTUiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTMxNTIsImV4cCI6MTc5MjQ4ODI5MjgxOX0.n9agP7_GFNznCm5m6_I9waNocP67JTJgKuwKuuZdyfE",
          "solUsdPrice": 104.13
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Currency exchange rate converter at ECB reference rates - convert between currencies for today or any date since 1999",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "amount": "100",
              "from": "USD",
              "to": "EUR,JPY,GBP"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "amount": 100,
              "converted": {
                "EUR": 87.974
              },
              "date": "2026-09-24",
              "from": "USD",
              "rates": {
                "EUR": 0.87974
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "amount": {
                      "description": "optional, default 1 (query)",
                      "type": "string"
                    },
                    "from": {
                      "description": "ISO currency, e.g. USD (query)",
                      "type": "string"
                    },
                    "to": {
                      "description": "optional ISO currency or comma list, e.g. EUR,JPY (query)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "from"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "amount": {
                      "description": "Amount",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "converted": {
                      "type": "object"
                    },
                    "date": {
                      "description": "Date (YYYY-MM-DD)",
                      "type": "string"
                    },
                    "from": {
                      "description": "Start of the range",
                      "type": "string"
                    },
                    "rates": {
                      "description": "Rates keyed by code",
                      "type": "object"
                    },
                    "requested_date": {
                      "description": "Requested date"
                    },
                    "source": {
                      "description": "Data source the values come from",
                      "type": [
                        "string",
                        "null"
                      ]
                    }
                  },
                  "required": [
                    "from",
                    "rates"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-20T09:22:52.858Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T09:22:52.682Z"
    },
    "resource": "https://saylorinnovations.com/api/util/fx",
    "serviceName": "Saylor Innovations Real-World Ut",
    "tags": [
      "utility",
      "fx",
      "real-world data",
      "util"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Currency exchange rate converter at ECB reference rates - convert between currencies for today or any date since 1999"
}

What the leaf hashes

{"body":"f7782e5b3b53f7ac7ea1c68a2f7b687ee3d087c73fb27d62b4dff23c55097f6d","id":120772,"kind":"listing","method":"baseline/1","observed_us":1793025618769178,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/util/fx","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0x786522ac6c6b0494ab4ac6fdd67b0c47b2bdb6747c21a394aa36ad6b3e66865f
  2. 0x103a3705a38ca48836ef1b04022b3e67901aa05bfa77fb72d5a4c92a38602024
  3. 0xbb4d16b821b31633a03d7faa4a72faad7663752d0a0f243887904e691eec73ac
  4. 0x23467858ef99c46ac46f1b154a90dbf578f2cf2797196860f9cadf2aa43c391a
  5. 0x5d0c745930ffbb652c1949420bb6470e1b25cc5c29001e21f3c397211fbce05f
  6. 0x83bc05447f07e1d993e4d3b34add9713477205da7387fd59bbcadb8486220642
  7. 0x74e7569870b6f34585529f9ae72fa541174d16431fd503f2e405883ae5aff595
  8. 0x07e9276fbde0157d5a701c776bd8dd345a9ff0d505dfbb59c4f5c735bf0a74ba
  9. 0x9521d37f8b8c8e395603f36112a73daa4080bf6f7267ab8c5b2919f74d02cece
  10. 0x82de673d7b0aea740891d4dba7c3425d4070f8237d8c7357e6034c5ccc9ee734
  11. 0x15ee99441401ec9e8c72aaf51bd6c821ec4e6b18bc91225370e5c19c4c8e8448
  12. 0xdcba35a3346e9c4b9ae1267cc5995998c2c33da9ef658e955eaae1589ebbdcad
  13. 0x01c95624b1f2385ef774ee258a9ae58a4df07a1bdaa829de84e1d5201f3f39c2
  14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
  15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
  16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
  17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON