Evidence row 1260849

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://app.heinrichstech.com/v1/cdp/echo"
    ]
  ],
  "name": "app.heinrichstech.com/v1/cdp/echo",
  "owner_address": "0xda2f35d283c42dd60b965322394bc658a5c1769f",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xDa2F35d283c42dd60B965322394bc658a5c1769F",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "EDtPHNFA6ofGQZPb8NYUxdTkqVwCfkWJzRCg8vQXkYBL",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "0.001000",
        "asset": "524C555344000000000000000000000000000000",
        "extra": {
          "invoiceId": "715db249-2b72-4402-bfe0-a9748e0751d0",
          "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 120,
        "network": "xrpl:0",
        "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "0.001000",
        "asset": "5553444300000000000000000000000000000000",
        "extra": {
          "invoiceId": "5bce2241-df59-4c9b-93bd-c34ae8498c3b",
          "issuer": "rGm7WCVp9gb4jZHWTEtGUr4dd74z2XuWhE",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 120,
        "network": "xrpl:0",
        "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "USDC",
        "extra": {
          "currency": "USDC",
          "issuer": "GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"
        },
        "maxTimeoutSeconds": 120,
        "network": "stellar:pubnet",
        "payTo": "GCB5WZT5VCBBATGMQMTB6TLUXD6KQC6N5ITRWK3CCP4J3YOCE45FA2GO",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      }
    ],
    "description": "BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop.",
    "extensions": {
      "bazaar": {
        "category": "utility",
        "discoverable": true,
        "info": {
          "input": {
            "body": {
              "message": "hello bitbooth"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "ok": true,
              "payment": {
                "network": "eip155:8453",
                "payer": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
                "transaction": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
              },
              "protocol": "x402 + CDP Facilitator",
              "service": "BitBooth /v1/cdp/echo",
              "timestamp": "2026-05-05T12:00:00.000Z",
              "youSent": "hello bitbooth"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "message": {
                      "description": "Optional string to echo back in the response. Max 500 chars.",
                      "maxLength": 500,
                      "type": "string"
                    }
                  }
                },
                "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"
        },
        "tags": [
          "reference",
          "demo",
          "x402"
        ]
      }
    },
    "lastUpdated": "2026-10-30T09:08:23.577Z",
    "quality": {
      "l30DaysTotalCalls": 9,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-30T09:08:21.718Z"
    },
    "resource": "https://app.heinrichstech.com/v1/cdp/echo",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop."
}

What the leaf hashes

{"body":"309c3fe746c8916c4799c89ef150bb4eff78fe17b8f404bd7b4f890471ccc3a7","id":1260849,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385487239060,"prev":1038061,"subject":"x402_bazaar:https://app.heinrichstech.com/v1/cdp/echo","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x560ed3fb47752ea2ead690b2bb3ffca33194a4619a6083024eca2ef09b927603
2. 0xb375c90a521ba5c71c80c48359af7d3f3e3a7bfdd5168c20ce63cf8c6e78f456
3. 0x3884a8cabe641ad2497fb48f2d31cac438954eb7e3c5dada07628a14d7f65692
4. 0x80e1a2ef662f3894d1282fb19357730a7e7340ef8f3fe6cf21e6e85e67bb53f7
5. 0x9be21da72f1a2d9e14f349069d13fe630743e1eb3c9173ddc54f8b33b70391fb
6. 0xfe63f7d70ccacf8688a7b9175fdef9bc0fa64e864f7f024281b397773d0e2051
7. 0x0585167c620cf1c5d1ca2a32758efe856e08a8b9733cac215a6ac1097bfafbc4
8. 0xc94bff6f9ecfa35447d10269654c39db0ec1987dc5f0f1b001da61eafc41e803
9. 0xda5c73d9e791ca462b510c79a6f5511a7b08c13a34fe43dcfd4960337a504980
10. 0xe1c8548e5b29affb891dc343c78c8fb7d918687285b35b076296c3f2b119303d
11. 0x4eeede9b9ae30e92bb6f44b9609dc5ae9328b976370ab3fbf1070156c1b30cdd
12. 0x39553347c4739ac9ed90e3f481e46c8025da9e356a0f6e2526115aad09aaa15e
13. 0x85b6002c61ef4075a6447b26f57b780bd1014041507b2fc474c4280de84b3c10
14. 0xc50bc54a5f909a7a577c4f0728b218d8be3478facb29ad6040ae8212305ae1d6
15. 0xa937fac4496d1d79e24c5f12abd33388ef710185b9d82165d4b39af6bd434545
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861