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Evidence row 120120

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/esp32-cam-module-features-programming-guide
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
9b5726ac36dc87804ada93e42c583afba3c80fbe9a65968280bb053b2da0dcdf
Leaf
0xc91511e46ff14adf4f43d1632bce7a37c8e426afb689ad21b6bfa457f2fd1c83

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/esp32-cam-module-features-programming-guide"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:esp32-cam-module-features",
          "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:esp32-cam-module-features",
          "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:esp32-cam-module-features",
          "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": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "memo": "saylor:esp32-cam-module-features",
          "reference": "Dm6qeeoWgvLvbmcSD5HnAUtqzpkeYSDpSD6tZo9fZgUv",
          "session": "eyJhcnRpY2xlSWQiOiJlc3AzMi1jYW0tbW9kdWxlLWZlYXR1cmVzLXByb2dyYW1taW5nLWd1aWRlIiwicmVmZXJlbmNlIjoiRG02cWVlb1dndkx2Ym1jU0Q1SG5BVXRxenBrZVlTRHBTRDZ0Wm85ZlpnVXYiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ2NDE3ODI0OH0.GWv0YixqjFRgBeQ5sHiuX2ZGM94j3d-teSPM3Wh8qV4"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "memo": "saylor:esp32-cam-module-features",
          "reference": "F6oZ8nETqauhqZb16krtgodvrKHN8xczkVjK5J684aB5",
          "session": "eyJhcnRpY2xlSWQiOiJlc3AzMi1jYW0tbW9kdWxlLWZlYXR1cmVzLXByb2dyYW1taW5nLWd1aWRlIiwicmVmZXJlbmNlIjoiRjZvWjhuRVRxYXVocVpiMTZrcnRnb2R2cktITjh4Y3prVmpLNUo2ODRhQjUiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ2NDE3ODI0OH0.hH2fSJHWiGmxK5Gdsq1se_u6DitRTsiLlixNtLyumm4"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92742",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:esp32-cam-module-features",
          "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": "95611",
          "reference": "8wbbNNcfsoVi5XXE7urWFCbfd8PkWoiDxmJ8UJpdSNDm",
          "session": "eyJhcnRpY2xlSWQiOiJlc3AzMi1jYW0tbW9kdWxlLWZlYXR1cmVzLXByb2dyYW1taW5nLWd1aWRlIiwicmVmZXJlbmNlIjoiOHdiYk5OY2Zzb1ZpNVhYRTd1cldGQ2JmZDhQa1dvaUR4bUo4VUpwZFNORG0iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTI3NDIsImV4cCI6MTc5MjQ2NDE3ODI0OH0.OEvVb5yJLdyMuJ2sTNR6TAOBKMZFS7dAwsuIar9EiGc",
          "solUsdPrice": 104.59
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "ESP32-CAM guide - camera, microSD and WiFi features, flashing with an FTDI adapter and running firmware",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A features-and-programming guide to the ESP32-CAM: onboard camera (OV2640/OV7670), microSD, flash LED and WiFi/BLE; how to flash it without a USB port using an FTDI adapter and the GPIO0-to-GND flash-mode trick; and running Espressif's CameraWebServer sketch for a browser live feed.",
              "c": "IoT & Hardware",
              "id": "esp32-cam-module-features-programming-guide",
              "t": "ESP32-CAM Module: Features & Programming 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": "2026-10-20T02:40:58.301Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T02:40:58.083Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/esp32-cam-module-features-programming-guide",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "esp32-cam",
      "camera",
      "ftdi",
      "ov2640",
      "arduino"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "ESP32-CAM guide - camera, microSD and WiFi features, flashing with an FTDI adapter and running firmware"
}

What the leaf hashes

{"body":"9b5726ac36dc87804ada93e42c583afba3c80fbe9a65968280bb053b2da0dcdf","id":120120,"kind":"listing","method":"baseline/1","observed_us":1793025617381788,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/esp32-cam-module-features-programming-guide","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. 0xc914ffa83e07029d6002c03adb2aa096c25448ed83f6a5af9e49753717063319
  2. 0x2b3b50ee5683a30ff37719b3ba0843ed41dd2b86900df7be8109fe4baf0cfa39
  3. 0x412d4b9613d91faf7c46f6e9e6989606c59dbe330cfb156ac882d78774aa0459
  4. 0xcf89b65be08bacb32af7d22dcf6ba39ca68e4743ddc02b3ff96af01e3df256ec
  5. 0xd3d90732accef6243f42046c412de24c6154777abff5b60f11aad951fdf99f72
  6. 0x66f43e64ab718685bae0743316b297fc67ee15cb5c094e3c8501ca1c03c9c3f4
  7. 0xb4576e166722dabbeb17ed04f20d141d469f02b62cd69d2eb6fd8e1a1a14af4d
  8. 0xedf048a7129802fe6ff04c72cd970e679894951d81960b4725a4f19a7ae3df7f
  9. 0xd1fc9ad5227f21ee916f082e331cad10f4f5affee6de03744f1c759d645076a6
  10. 0xaf49c58b07f643adc422bcd56cf09b773ac862513c92c8ec09dac6240a88a8cc
  11. 0xde080106ffe5b9071b2505ae31b17f7da4d3a9c7f4f4d9819f700d720702beeb
  12. 0xde09984239f27618a13932caf48f5d39831fc5021500b0581dce0dabd570bd6e
  13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
  14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
  15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
  16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
  17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON