Evidence row 3763986

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://aptu.dev/v1/echo"
    ]
  ],
  "name": "aptu.dev",
  "owner_address": "0x169313d28075a6ddb70e7e5190a1eddc0d105671",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x169313d28075a6dDB70E7e5190a1eDdc0d105671",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "maxTimeoutSeconds": 60,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "364mUWTYwsteDSKLjHBrV8y77rAdqwmnWLB8sJBkBD1E",
        "scheme": "exact"
      }
    ],
    "description": "Echoes a JSON {message} back; the simplest paid call for verifying your x402 payment flow.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "message": "hello from an autonomous agent"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "echo": {
                "message": "hello from an autonomous agent"
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "message": {
                      "maxLength": 10000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "message"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "bc_ognzk2zl"
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793569800/bazaar-icons/4d5697f26cf1508d.png",
    "lastUpdated": "2026-11-05T14:23:34.443Z",
    "quality": {
      "l30DaysTotalCalls": 13,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-05T14:23:34.173Z"
    },
    "resource": "https://aptu.dev/v1/echo",
    "serviceName": "aptu.dev",
    "tags": [
      "echo",
      "x402",
      "testing"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Echoes a JSON {message} back; the simplest paid call for verifying your x402 payment flow."
}

What the leaf hashes

{"body":"9ea518a35794d97e0887ce2ac3388d66f5993b4a81119a22fd0f17c7b6348776","id":3763986,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793996569866042,"prev":3065067,"subject":"x402_bazaar:https://aptu.dev/v1/echo","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-06 (303443 rows).

1. 0xf81853532bf17730af0dfbc84d6627443e89752d3eda0a9e7a6f290186c45065
2. 0x70b45bfa5c1a3cb4a3e15f104e1b194a26990dadb9f67877cf7cdbba9e684adf
3. 0xce5b02e61a003c515bb55c505f00541dce0ad1fde36d000c7ba0f56d20e13fac
4. 0xc734935c69d490434b63d6cebe7da102e0209384583b8c271d39eb830fd86dd7
5. 0xfe0bf84eb5543b60c4276967da5d880a9804c766d970ad6aaa2a2672d1360ab8
6. 0xb2dabcfd21c0f7844d328a48b054b546cf66609d93854b493c8fd0bc9dff96bc
7. 0xc9da526cf7563f8f2092d868f0c5f659fdd6edb271eb02148e1f84761a9e6c90
8. 0x4e149ff77d0a1f99b495d040116b75ef036d3141b82c17b197ec0ec651afb989
9. 0x331a5f591ff73b01e860ea6a6d4d5798f5ca7b102ea58b5f8545e67f4dff362a
10. 0xf634748e2cd353944790edd2212568eb7bf49a6a57d7e6775ee9c61de5c7b107
11. 0x43ebaed516849138c1417647fbdc098bd3c162973ec1b4c9bca1b85182da6786
12. 0xaf351973db16489c0a2d6e59a25160fc2d66f8a425984250561a15d65ccc77aa
13. 0x0f18fdbad3fe8f4e9a62e25843b36753d6ed463a552cddc989b5a1e33f108566
14. 0xadb9e5d5e78a6ef642bc8b18b9f3dd14d6e5d20536651d3ce85fec62d35a6aba
15. 0x0bc8160b8c94aae791142fc9caa83c153cc73b339512089ee494d4e8e7094abe
16. 0x04c1c4929933bae20304ac32084d4b93dcac07567f68e828ac93bbc39eb4614c
17. 0x0ab273486ad4e41bf08c741b20b2ee12e0fc87eaa429a5467c58fd3be34409b9

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1