Evidence row 2207990

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://conversion.halowerk.com/v1/payment-methods-experiment"
    ]
  ],
  "name": "conversion.halowerk.com/v1/payment-methods-experiment",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Payment methods visible experiment plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "context": {
                "environment": "production"
              },
              "target": "https://example.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "action": {
                "control_observation": false,
                "guardrail": "Do not reduce accessibility, security or legal clarity.",
                "hypothesis": "State accepted payment methods before checkout.",
                "primary_metric": "payment_method_present",
                "success_rule": "truthy true",
                "type": "experiment_plan"
              },
              "category": "conversion",
              "comparison": null,
              "confidence": 100,
              "criterion": {
                "expected": true,
                "id": "conversion:payment-methods",
                "metric": "payment_method_present",
                "operator": "truthy"
              },
              "evidence": {
                "hash_sha256": "8037bac038d19ebb4d65dff1bccfb7bfd9b259c12fcd442e38dd26318733a526",
                "redirects": 0,
                "source": "https://example.com/",
                "status": 200
              },
              "limitations": [
                "Read-only public inspection; no login, form submission, exploit attempt, purchase or load test.",
                "Signals support a conversion decision but do not prove causal uplift without a controlled experiment."
              ],
              "meta": {
                "cache": "hit",
                "comparison_cache": null,
                "partial": false
              },
              "mode": "experiment",
              "observation": false,
              "pass": false,
              "scope": "live_public_read_only",
              "score": 0,
              "service": "Payment methods visible — Experiment Plan",
              "service_number": 782,
              "target": {
                "checked_at": "2026-10-23T06:50:22.151Z",
                "final": "https://example.com/",
                "requested": "https://example.com"
              },
              "verdict": "fail",
              "warnings": []
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "baseline": {
                      "additionalProperties": true,
                      "description": "Optional baseline returned by a previous snapshot call.",
                      "type": [
                        "object",
                        "null"
                      ]
                    },
                    "compare_url": {
                      "description": "Optional public comparison URL. Used by change and monitoring services.",
                      "maxLength": 2048,
                      "minLength": 3,
                      "type": "string"
                    },
                    "context": {
                      "additionalProperties": {
                        "type": [
                          "string",
                          "number",
                          "boolean",
                          "null"
                        ]
                      },
                      "description": "Optional non-secret correlation labels returned unchanged only in the request lifecycle.",
                      "maxProperties": 12,
                      "type": "object"
                    },
                    "target": {
                      "description": "Public HTTP(S) URL or domain to inspect. A bare domain is normalized to HTTPS.",
                      "maxLength": 2048,
                      "minLength": 3,
                      "type": "string"
                    }
                  },
                  "required": [
                    "target"
                  ],
                  "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": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T15:21:08.265Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T15:21:07.929Z"
    },
    "resource": "https://conversion.halowerk.com/v1/payment-methods-experiment",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Payment methods visible experiment plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed."
}

What the leaf hashes

{"body":"6167f1d623d308cbfd9a309583fe872366b4f44db892b007ee9d0c646cc3c287","id":2207990,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793647020844704,"prev":null,"subject":"x402_bazaar:https://conversion.halowerk.com/v1/payment-methods-experiment","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x2014dd6a512dc262704c4229d954fc961a7739efe17b4f8e4f7ff355d47a2977
2. 0x50c3280601fe71dab2f40a5c712a365f2e3f88a128b3c6904e8e9d1b0c41b4d8
3. 0x99b8c8e0e64739f01507cfdea5527e5e287caa47e0cfa15f87e0ce4cb23207c4
4. 0x235e7af0a2f379cf20012aa6b8a41c95993a0466c3ffec464c1d1a7f976926f6
5. 0x99cdf6fef594ad2ad44c6d2bf3c4922c70e7afd3b83d7793b28b48dd8a640341
6. 0x78154c30c1ffbbe2f693b195aed45ebea105cc1da790d4d92be3527da389a4d9
7. 0x594132e319e46551745bd7b413246f49ec453883d5e918ced7cef30e199df1da
8. 0x7d1a2da1e6ed88ee6ec4ef444e83799ac05cf8e86f6e819b230af171ed812ffc
9. 0xedc348bed869e1278b81a9e7947be11f176c82f9d291b09bc96ad37e8429bd81
10. 0x9a4a9441767306e86ddc38c4b981c6f3faf58e6d0e0c4396eac7bda51b5f8649
11. 0x13e1c5e0f8b7e251bbf74cdc4ff3680c29eddc89d0d2558424af0fb8555589d4
12. 0x0287e9d9530add05d7480c4266f19be69f45ecae1d0e3ec844ff635060819eb8
13. 0x350e03a59bf81961fd9ce694f08f9ba0239d9ea2496b0c0dc7998c9e9855326f
14. 0xc63937235d47ff2107de3051477e395be67b96d91d1349c787bf4b1ef91b602f
15. 0xcd21ec8d72a18a2d4513e4fd309abbb530810fb1dbeecd4b9b85acb4d6ff8f12
16. 0xac40f077ca4be8c3432a67771725cc315e8101fc2649999cfad2c900a7640e27
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af