addrbookFor publishers
← The evidence ledger

Evidence row 119792

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/evm/polygon/block/latest
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
420994cdf7363ec4a611a9b02fe073f6cbb10020c3833793d73591db7950eecb
Leaf
0x4ba82cc0d705dedb827d5159a76e11fb278eebc1644e983799b262626322dc18

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/evm/polygon/block/latest"
    ]
  ],
  "name": "Saylor Innovations On-Chain Data",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:evm:block:polygon/block/l",
          "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:evm:block:polygon/block/l",
          "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:evm:block:polygon/block/l",
          "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": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:evm:block:polygon/block/l",
          "reference": "Gde8RjU7skYAJXmbco7UMktNAG2kxyVnhAeAgXoXpaJ2",
          "session": "eyJhcnRpY2xlSWQiOiJldm06YmxvY2s6cG9seWdvbi9ibG9jay9sYXRlc3QiLCJyZWZlcmVuY2UiOiJHZGU4UmpVN3NrWUFKWG1iY283VU1rdE5BRzJreHlWbmhBZUFnWG9YcGFKMiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNTA3NzQ2MTI2fQ.vsUGGz4G-pouRAz4VBAMl0IXDYfNczA2DPapNpFwe9Q"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:evm:block:polygon/block/l",
          "reference": "89412Yp6S3tyTdvH7ntRhbZsvoT3kigJpy2PTfVM6tXP",
          "session": "eyJhcnRpY2xlSWQiOiJldm06YmxvY2s6cG9seWdvbi9ibG9jay9sYXRlc3QiLCJyZWZlcmVuY2UiOiI4OTQxMllwNlMzdHlUZHZIN250UmhiWnN2b1Qza2lnSnB5MlBUZlZNNnRYUCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNTA3NzQ2MTI2fQ.dLdX69UCBfk4ILVQa9XsQk9Gzs4oTsZvWHx44Ing5Eg"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "90282",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:evm:block:polygon/block/l",
          "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": "93075",
          "reference": "ChF2GC9BKkiM2XHFFbbfSHJRHUPoTSZTK1GWASoi7bff",
          "session": "eyJhcnRpY2xlSWQiOiJldm06YmxvY2s6cG9seWdvbi9ibG9jay9sYXRlc3QiLCJyZWZlcmVuY2UiOiJDaEYyR0M5QktraU0yWEhGRmJiZlNISlJIVVBvVFNaVEsxR1dBU29pN2JmZiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5MDI4MiwiZXhwIjoxNzkyNTA3NzQ2MTI2fQ.c-Bbztjo_9BbQuCQftiSJuzZOsRK-HMTe5yYS2U8yqo",
          "solUsdPrice": 107.44
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Polygon block by number or latest - hash, time, transaction count, gas used, base fee and miner",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "base_fee_gwei": 0.005,
              "chain": "base",
              "gas_limit": 150000000,
              "gas_used": 41000000,
              "hash": "0xcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
              "miner": "0x4200000000000000000000000000000000000011",
              "number": 51738756,
              "time": "2026-09-24T16:53:20.000Z",
              "timestamp": 1790240000,
              "tx_count": 212
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "base_fee_gwei": {
                      "description": "Base fee per gas in gwei",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "chain": {
                      "description": "Blockchain the data is for",
                      "type": "string"
                    },
                    "gas_limit": {
                      "description": "Gas limit",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "gas_used": {
                      "description": "Gas consumed",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "hash": {
                      "description": "Hash of the item",
                      "type": "string"
                    },
                    "miner": {
                      "description": "Address of the block producer",
                      "type": "string"
                    },
                    "number": {
                      "description": "Number that was looked up",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "parent_hash": {
                      "description": "Hash of the parent block",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "time": {
                      "description": "Time",
                      "type": "string"
                    },
                    "timestamp": {
                      "description": "Time of the record",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "tx_count": {
                      "description": "Number of tx",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "tx_hashes": {
                      "description": "Transaction hashes in the block",
                      "type": [
                        "array",
                        "null"
                      ]
                    }
                  },
                  "required": [
                    "chain",
                    "number",
                    "hash"
                  ],
                  "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": "2026-10-20T14:47:06.183Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T14:47:05.861Z"
    },
    "resource": "https://saylorinnovations.com/api/evm/polygon/block/latest",
    "serviceName": "Saylor Innovations On-Chain Data",
    "tags": [
      "evm",
      "polygon",
      "block",
      "onchain"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Polygon block by number or latest - hash, time, transaction count, gas used, base fee and miner"
}

What the leaf hashes

{"body":"420994cdf7363ec4a611a9b02fe073f6cbb10020c3833793d73591db7950eecb","id":119792,"kind":"listing","method":"baseline/1","observed_us":1793025616497927,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/evm/polygon/block/latest","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. 0x4ba8289a260d0099d00399359e888e521a8a6f5ae975b93c1a5897eb9d511c32
  2. 0x23e4ab5129105b5f220f49f3d3043a85faca89c8fddd1105f304d4c2565cfeea
  3. 0x89607944d5fea1fc4c73bfb5e5c19d7921dfb3459bbcf7f571fd907b91217aa3
  4. 0xb10e9c4220e326b047e0251e4a3eab3c2169a2cd51aa95cbc68f6d1916d1238e
  5. 0x9376eaccc36e41a414e6cc7b561156f8420add75fe79a49e1258597e23ad9d24
  6. 0xa2e6c63f711405a411183c86cfa97aa15c7e6dd5fc18d28a5108cf59da072050
  7. 0xe4e37ad745bb75d143b639d904594551a332182b91d48e809be25e6be9b31b9b
  8. 0x69c699acbd359aeb7e6db54a348f489964f2748d39ca3d05587e0ce8f7d08cb1
  9. 0x2eff88dd310b0d6e4c81b9dd08dc1d8ecc83459ce7b44d736b37e179137413f8
  10. 0x25535a5918795cc2fd8a0d10ce751f574b6ad2a93510526d842cb104854c5af1
  11. 0x8e1dce5acc3a34df8e5fee91635037c0b87740a313eb455495b8fa04b41070e7
  12. 0x67ae8949b58cb7b0dd4cfa0f9aeeee715e0ae6b87fef0ba46483bbf280004c53
  13. 0x1ffd24a0422348bb2305058cc138e276511e1c074bf8139af5b773941f0e5de2
  14. 0x88e326a39b26e2c125306c9d3805d14398ace088bba9a2a0aa376b811cfb201a
  15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
  16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
  17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
  18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON