Evidence row 548336

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-tools.vercel.app/api/concerts"
    ]
  ],
  "name": "x402-tools.vercel.app/api/concerts",
  "owner_address": "0xbad1aa224bfe4feb460e12b2553dcdf98a7098d0",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xbAd1Aa224bFe4fEb460E12b2553DcDf98a7098d0",
        "scheme": "exact"
      }
    ],
    "description": "Search for upcoming concerts. Supports city, date range, genre, and artist filtering.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "countryCode": "US",
              "page": "0"
            },
            "type": "http"
          },
          "output": {
            "example": [
              {
                "artists": [
                  "Khruangbin",
                  "Bob Moses"
                ],
                "city": "Boston",
                "date": "2026-04-15",
                "name": "Khruangbin - A La Sala Tour",
                "priceRange": {
                  "max": 150,
                  "min": 55
                },
                "time": "20:00:00",
                "url": "https://example.com/event/abc123",
                "venue": "Paradise Rock Club"
              }
            ],
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "artists": {
                      "description": "Comma-separated artist names to filter by (e.g. Khruangbin,Bob Moses)",
                      "type": "string"
                    },
                    "city": {
                      "description": "City name (e.g. Boston, New York)",
                      "type": "string"
                    },
                    "countryCode": {
                      "description": "Country code filter (default US)",
                      "type": "string"
                    },
                    "endDateTime": {
                      "description": "End of date range in ISO 8601 (e.g. 2026-03-31T23:59:59Z)",
                      "type": "string"
                    },
                    "genre": {
                      "description": "Music genre. One of: Alternative, Ballads/Romantic, Blues, Classical, Country, Dance/Electronic, Folk, Hip-Hop/Rap, Jazz, Latin, Metal, Pop, R&B, Reggae, Rock, World.",
                      "type": "string"
                    },
                    "page": {
                      "description": "Page number for pagination (default 0)",
                      "type": "string"
                    },
                    "startDateTime": {
                      "description": "Start of date range in ISO 8601 (e.g. 2026-03-01T00:00:00Z)",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "items": {
                    "properties": {
                      "artists": {
                        "description": "Performer/artist names",
                        "items": {
                          "type": "string"
                        },
                        "type": "array"
                      },
                      "city": {
                        "description": "City name",
                        "nullable": true,
                        "type": "string"
                      },
                      "date": {
                        "description": "Local date (YYYY-MM-DD)",
                        "type": "string"
                      },
                      "name": {
                        "description": "Concert/event name",
                        "type": "string"
                      },
                      "priceRange": {
                        "description": "Ticket price range or null if unavailable",
                        "nullable": true,
                        "properties": {
                          "max": {
                            "description": "Maximum ticket price (USD)",
                            "type": "number"
                          },
                          "min": {
                            "description": "Minimum ticket price (USD)",
                            "type": "number"
                          }
                        },
                        "type": "object"
                      },
                      "time": {
                        "description": "Local time (HH:MM:SS) or null",
                        "nullable": true,
                        "type": "string"
                      },
                      "url": {
                        "description": "Event URL",
                        "nullable": true,
                        "type": "string"
                      },
                      "venue": {
                        "description": "Venue name",
                        "nullable": true,
                        "type": "string"
                      }
                    },
                    "required": [
                      "name",
                      "date",
                      "artists"
                    ],
                    "type": "object"
                  },
                  "type": "array"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T09:55:01.542Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-27T09:55:01.381Z"
    },
    "resource": "https://x402-tools.vercel.app/api/concerts",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Search for upcoming concerts. Supports city, date range, genre, and artist filtering."
}

What the leaf hashes

{"body":"5a6383d19591831429b1f88b3a59a513beafe689ed6d594e955fc219264538dc","id":548336,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133295144283,"prev":453255,"subject":"x402_bazaar:https://x402-tools.vercel.app/api/concerts","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x0fa7ea8def63527985aa676e9d5f20a205f33828ba525d4caedcd63211fd252e
2. 0x3a5218cd45f0099998933a0655743fe6c38c5af9da03f7e383a745ea56df3ee3
3. 0xd171e89313a6118a7497793fff26846f656c6cfcae66096537b58d640906b4d4
4. 0xa88db38b646e6d48975894b5cfbd6a99e2e8134e1ecf0e6fb597487ec1e17560
5. 0x4945f02cbe5ed31234a467aca16f4cb63bfa98ed53e5e9131450d7c585199493
6. 0x62dc77f2f5cda02899c0200d116e82bf6d643a8936fd4dc85442fcafc1502160
7. 0x187b55cd3d882d123788a9314448c9f8ad8ad62ec82b7e5417a809a7f6bbfd69
8. 0x31d4c97642e080e141e3869e433e973567cf48dbb85a5d76df167d83e460b835
9. 0xa2fc4bffc417a5fb91e2730e0b1ef614a9a9e303eb2aa88303f3cb67847e0a57
10. 0x881c655bfa9ead003aa2814cbe7266bcbe27d192dbf9beca8cd2e542c42640ce
11. 0x8ac2fe99f9dd601ab64a254bbaed16deea227866f6b921e1bd7aaefef2e05b53
12. 0x0d3ea2b5e8eb21cf4cb25a0567ff70340d50d07631267f35ddfc7cd1de74eea5
13. 0xedf6ab3c3733ce137d888d3e5f7006ba77ab04b8f1fe576519f7b056959665ee
14. 0x52c5141da0cbee106a30396ee7d1360fd22f55084aca2ca436c8007892775670
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4