Evidence row 1262206

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://kr-x402-mvp.kgy5612.workers.dev/crypto/x402-check"
    ]
  ],
  "name": "Crypto Microdata for Agents",
  "owner_address": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617",
        "scheme": "exact"
      }
    ],
    "description": "Should my agent pay this x402 endpoint? Live pre-payment check of ANY x402 URL (never pays it): we GET the target unpaid and decode its 402 quote (PAYMENT-REQUIRED header for v2, JSON body for v1) -> x402 version, every accepts[] option with real USD price (atomic amount / decimals), network name, asset (is it canonical USDC on that chain?), scheme, payTo, maxTimeoutSeconds, resource URL match, Bazaar discovery schema present?, description, latency_ms and TLS.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "max_usd": 0.01,
              "url": "https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "bazaar_schema": true,
              "cheapest_option": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "asset_label": "USDC",
                "is_usdc": true,
                "max_timeout_s": 300,
                "network": "eip155:8453",
                "network_name": "base",
                "payTo": "0xe4be4d0bd82d8e68203deff81f79ede0529f2617",
                "price_usd": 0.001,
                "scheme": "exact"
              },
              "checked_at": "2026-10-30T07:30:00Z",
              "flags": [],
              "http_status": 402,
              "latency_ms": 180,
              "options": [],
              "payto_onchain": {
                "chain": "base",
                "is_contract": false,
                "usdc_balance": 0.079
              },
              "reachable": true,
              "reasons": [
                "402 quote parsed: 1 option(s)",
                "cheapest $0.001 USDC on base"
              ],
              "resource": {
                "description": "Paid heartbeat",
                "host_match": true,
                "url": "https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"
              },
              "risk_score": 0,
              "should_pay": true,
              "url": "https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping",
              "verdict": "SAFE_TO_PAY",
              "within_budget": true,
              "x402_version": 2
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "max_usd": {
                      "description": "Optional budget per call in USD; sets within_budget",
                      "examples": [
                        0.01
                      ],
                      "minimum": 0,
                      "type": "number"
                    },
                    "method": {
                      "description": "Probe method (default GET)",
                      "enum": [
                        "GET",
                        "POST"
                      ],
                      "type": "string"
                    },
                    "url": {
                      "description": "Absolute https URL of the x402 endpoint to check, with its query string (alias endpoint=; omitted = self-test on /crypto/ping)",
                      "examples": [
                        "https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"
                      ],
                      "maxLength": 2048,
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-30T01:31:27.452Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-30T01:31:27.315Z"
    },
    "resource": "https://kr-x402-mvp.kgy5612.workers.dev/crypto/x402-check",
    "serviceName": "Crypto Microdata for Agents",
    "tags": [
      "x402",
      "x402-check",
      "endpoint-trust",
      "pre-payment-check",
      "api-verification"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Should my agent pay this x402 endpoint? Live pre-payment check of ANY x402 URL (never pays it): we GET the target unpaid and decode its 402 quote (PAYMENT-REQUIRED header for v2, JSON body for v1) -> x402 version, every accepts[] option with real USD price (atomic amount / decimals), network name, asset (is it canonical USDC on that chain?), scheme, payTo, maxTimeoutSeconds, resource URL match, Bazaar discovery schema present?, description, latency_ms and TLS."
}

What the leaf hashes

{"body":"df34bc74c77cc5408565013f1c627bf806af28a610b206451e4fae25b555bb80","id":1262206,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385521028459,"prev":null,"subject":"x402_bazaar:https://kr-x402-mvp.kgy5612.workers.dev/crypto/x402-check","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. 0x49157e7e5d4cfe9d207cfe63489d59f933146621fdae7aad3c49e0a959001ab9
2. 0xde8c2cfc2a588b146585754bac422622340442d643770ae4368a1cf53b926c12
3. 0x56349701dc1161559e9943edd2aadf6a5d874756a0203c61f3477ef129b7ecee
4. 0x372c05dfb7ecbb29b595f0d621c5677c816c21860c5054afdff42564672ec1a8
5. 0xff9e04dd6463e57e44e2173d867c8af0d43a9a44051a7ee670db5721330e1063
6. 0x6eea290924b44bc784a96d32ac0dc086bfffd99feb8c1cdd21f0a4e1c9b3c4a5
7. 0xde37cdac3f47f1059723dd66180513b1ab53c873ea2d1147c5de637e79f2367f
8. 0x73f0dbc937b9f29eaab650ec6df2297bbdc0d994516897561fee5cfaed2396e7
9. 0x622ddd3d36ba9ec23a3afa272c2f9fb9ca3d39f10efae32cf828c5862efd6fc9
10. 0x53b98fbfe7fbb4f402500246ded789a5fe77fdf03eb2e7dac3b8be1ff0bacdf4
11. 0x92b466f485a65b10435cb6d2c8e51df9afd133ff49f84fa719af048b03140380
12. 0xbd5c85e2682d76725be130a44cbbcc9d4be383fb556e6028d95854d01e041ed3
13. 0x0b8a485e6ab0668fbad8011e734741b720cdbb463970428343e7f73238a809f9
14. 0x9ace81ddbf101c81e3033efcaf62a4f4ad2b7dc0b97b61a7adf81117108ff2f7
15. 0xa937fac4496d1d79e24c5f12abd33388ef710185b9d82165d4b39af6bd434545
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861