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Evidence row 120061

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/api-error-resolver
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
b15df98dfbffc24d991bd8b26e323d1fd7704564e2c99a1269d51e326ba77526
Leaf
0x8baa2c391664ea6ae2c9f36157fe4c5e7aa1fb2dbdf4e49a8073593d71993b96

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/api-error-resolver"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:api-error-resolver",
          "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:api-error-resolver",
          "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:api-error-resolver",
          "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:api-error-resolver",
          "reference": "E8Ryc47sYGSX8oQCjdJoYW7RYAbNnGsCEmyRP4zwLL7X",
          "session": "eyJhcnRpY2xlSWQiOiJhcGktZXJyb3ItcmVzb2x2ZXIiLCJyZWZlcmVuY2UiOiJFOFJ5YzQ3c1lHU1g4b1FDamRKb1lXN1JZQWJObkdzQ0VteVJQNHp3TEw3WCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNDU5OTgzNjQwfQ.ARiO5Li7yzLJRg9rOOfhdUi4Tw_-NkgFu-bBZLC5gY0"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "memo": "saylor:api-error-resolver",
          "reference": "6iAxnPcNtcYG5Fn31feNzL3hRXDPJw8Ed8CMmWg9fJrQ",
          "session": "eyJhcnRpY2xlSWQiOiJhcGktZXJyb3ItcmVzb2x2ZXIiLCJyZWZlcmVuY2UiOiI2aUF4blBjTnRjWUc1Rm4zMWZlTnpMM2hSWERQSnc4RWQ4Q01tV2c5ZkpyUSIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNDU5OTgzNjQwfQ.HZKDjeEPddmhiLyZwpmQspUYYAf9DeScx4w4On0wNys"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93107",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:api-error-resolver",
          "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": "95987",
          "reference": "4cZCQwfeuB56oz3szRoou5f7vjZRMQfcXxzQgqdJeGwu",
          "session": "eyJhcnRpY2xlSWQiOiJhcGktZXJyb3ItcmVzb2x2ZXIiLCJyZWZlcmVuY2UiOiI0Y1pDUXdmZXVCNTZvejNzelJvb3U1Zjd2alpSTVFmY1h4elFncWRKZUd3dSIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5MzEwNywiZXhwIjoxNzkyNDU5OTgzNjQwfQ.rsKZcsyOEiilcgWggezt9o3qLA5DyQSm0wmymkQYcFo",
          "solUsdPrice": 104.18
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "API error resolution method - reproduce on the wire, classify by status class, validate the contract, control retries",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A method for resolving API failures: reduce to one sanitized wire-level request, classify by HTTP status class before editing anything, validate the request contract byte-for-byte, separate authentication from authorization failures, control retries around idempotency, and convert the fix into a regression test. Includes a worked CORS-preflight example.",
              "c": "Self-Hosting & Infra",
              "id": "api-error-resolver",
              "t": "API Error Resolver"
            },
            "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": "2026-10-20T01:31:03.719Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T01:31:03.451Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/api-error-resolver",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "api",
      "http",
      "debugging",
      "cors",
      "rest"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "API error resolution method - reproduce on the wire, classify by status class, validate the contract, control retries"
}

What the leaf hashes

{"body":"b15df98dfbffc24d991bd8b26e323d1fd7704564e2c99a1269d51e326ba77526","id":120061,"kind":"listing","method":"baseline/1","observed_us":1793025617165328,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/api-error-resolver","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. 0x8baa6615f8efbfbcaf736aab187143a05944d54bef6cb4d95482c99de0db65c7
  2. 0xf0801f687f49c5d7cbd64100664b70e85bcfaf0132d45abdb36cdab16a56a649
  3. 0xea0ef97ffe452970e05ece2513d9584b40ef3f3ed6df69f40764eaa5aacacb7a
  4. 0xc9e9adf0351b189cdcc18cdbfb379632bfe71d71e1b520acc8725c4c807956df
  5. 0xc7b872df3c89d13e12d4565434edbb6865c96a0f002d14bbc315d419a8c7387d
  6. 0xd42193f148972d305d50e36a07fcdac58d48d54046099a79da94ed6fc582033f
  7. 0xca6d03e9a60c11b07edc1876565970af69deb310c686604e18525b3a74977b1b
  8. 0x26857c5f5f364730225b89d3f3ec3237b62ca02479e4702e8f688a2d3949c2a7
  9. 0x861d0cf10e7d4dfa5ba4b9f25cc35414dd6a51eea26966d00179aad4243bec2d
  10. 0x6ddbfc11a7759e428ac6be29ebc89a10db0158bf96c5d141eb5c2695e3450573
  11. 0xc0c39d9d8be0b7d600d3badab7754e326243b0d4eb60c4b5cd965d7d764d1d04
  12. 0xfc86b2282cb8f91e68280efe01f3c50453c94fae2ef04af1a75d4b05d0af2b8f
  13. 0xd5ec7ffaecac790d8adfa0620b0a5494758f862e3090b49e556a6ecbad2f0782
  14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
  15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
  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