Evidence row 120287

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://saylorinnovations.com/api/kb/responsible-scraper
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: fe7df3a6e801ce895d22eabd8ca15767070439f651e114a7d15a4dff94745d67
Leaf: 0xc90fbf4f41eb2499ad7d38176cebcf6723dc08a43bc5c7b9eb4bdc0d9e6b8519

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/responsible-scraper"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:responsible-scraper",
          "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:responsible-scraper",
          "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:responsible-scraper",
          "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": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:responsible-scraper",
          "reference": "GX67RJWpnfu5uBnqgKYY3fDHapnww3htaZrDra6sAyBm",
          "session": "eyJhcnRpY2xlSWQiOiJyZXNwb25zaWJsZS1zY3JhcGVyIiwicmVmZXJlbmNlIjoiR1g2N1JKV3BuZnU1dUJucWdLWVkzZkRIYXBud3czaHRhWnJEcmE2c0F5Qm0iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5Mjc3ODU5NDI4NX0.hYCfV2UOexkUNVcI0q5UH17fWNwpfS6C7CgI7GUMfH8"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:responsible-scraper",
          "reference": "Gri116GcE9js3BRUYFgMzMAXNRMt8T5Cd2U7nQoNZiGN",
          "session": "eyJhcnRpY2xlSWQiOiJyZXNwb25zaWJsZS1zY3JhcGVyIiwicmVmZXJlbmNlIjoiR3JpMTE2R2NFOWpzM0JSVVlGZ016TUFYTlJNdDhUNUNkMlU3blFvTlppR04iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5Mjc3ODU5NDI4NX0.H6R8FlcR5z-mLng-z1os2-bCvAlnmJQoVbGwIr7PhdY"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92858",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:responsible-scraper",
          "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": "95730",
          "reference": "HsrVUbEn1fSif5qX4k5AetzUom2J7afAzSXrRSGWorPq",
          "session": "eyJhcnRpY2xlSWQiOiJyZXNwb25zaWJsZS1zY3JhcGVyIiwicmVmZXJlbmNlIjoiSHNyVlViRW4xZlNpZjVxWDRrNUFldHpVb20ySjdhZkF6U1hyUlNHV29yUHEiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTI4NTgsImV4cCI6MTc5Mjc3ODU5NDI4NX0.2aDzmGePG9P63cRGuyMV10p2Kay_wDse44Mzs_E9rqU",
          "solUsdPrice": 104.46
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Responsible scraper design - permission, robots.txt, rate limits, caching, provenance and a kill switch",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A bounded scraper with confirmed permission/terms/robots handling, descriptive identity, rate/backoff/cache behavior, stable extraction fallbacks, provenance, validation, privacy limits, and a kill switch.",
              "c": "Web & Domains",
              "id": "responsible-scraper",
              "t": "Responsible Scraper Design Guide"
            },
            "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": {
                    "body": {
                      "description": "Main body text",
                      "type": "string"
                    },
                    "c": {
                      "description": "Category of the guide",
                      "type": "string"
                    },
                    "id": {
                      "description": "Identifier of the record",
                      "type": "string"
                    },
                    "license": {
                      "description": "License identifier",
                      "type": "string"
                    },
                    "price": {
                      "description": "Price",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "t": {
                      "description": "Title of the guide",
                      "type": "string"
                    }
                  },
                  "required": [
                    "id",
                    "t",
                    "c",
                    "body"
                  ],
                  "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": "2026-10-23T18:01:14.341Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-23T18:01:14.041Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/responsible-scraper",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "web-scraping",
      "robots-txt",
      "rate-limiting",
      "ethics"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Responsible scraper design - permission, robots.txt, rate limits, caching, provenance and a kill switch"
}

What the leaf hashes

{"body":"fe7df3a6e801ce895d22eabd8ca15767070439f651e114a7d15a4dff94745d67","id":120287,"kind":"listing","method":"baseline/1","observed_us":1793025617604901,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/responsible-scraper","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON