Evidence row 451810

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-gateway-production-1f21.up.railway.app/hash"
    ]
  ],
  "name": "x402-gateway-production-1f21.up.railway.app/hash",
  "owner_address": "0xf7eb4b12d673df433d76b2dbd9ca41db3fe1836e",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 90,
        "network": "eip155:8453",
        "payTo": "0xF7Eb4b12D673dF433d76B2DBD9CA41Db3fE1836E",
        "scheme": "exact"
      }
    ],
    "description": "Compute SHA256 hash or SHA-512, SHA-1 and MD5 checksums for UTF-8 text and return hex plus Base64 digests. Use for SHA256 hashing, checksum verification, integrity checks, content fingerprints, cache keys, deduplication and agent pipelines.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "algo": "sha256",
              "text": "hello world"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "status": "ready"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "algo": {
                      "description": "Hash algorithm; defaults to sha256.",
                      "enum": [
                        "sha256",
                        "sha512",
                        "sha1",
                        "md5"
                      ],
                      "type": "string"
                    },
                    "text": {
                      "description": "Text to hash.",
                      "maxLength": 250000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "text"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "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"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:16:30.05Z",
    "quality": {
      "l30DaysTotalCalls": 36,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-25T22:02:00.769Z"
    },
    "resource": "https://x402-gateway-production-1f21.up.railway.app/hash",
    "tags": [
      "hash",
      "sha256",
      "sha512",
      "sha1",
      "md5"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Compute SHA256 hash or SHA-512, SHA-1 and MD5 checksums for UTF-8 text and return hex plus Base64 digests. Use for SHA256 hashing, checksum verification, integrity checks, content fingerprints, cache keys, deduplication and agent pipelines."
}

What the leaf hashes

{"body":"84e65a13a27189a6a4735514083629ea2ef934e87ec809e07f9dcfb956606cb3","id":451810,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100514840907,"prev":125284,"subject":"x402_bazaar:https://x402-gateway-production-1f21.up.railway.app/hash","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. 0x2c59ae1bf7f49abec78f7a4d03dbcada95c119f6c54b9445613a55f24a827f99
2. 0x0b7f837326a124dfd5e97f93aae6e5c1af32c1afff1417c4aaea985ac35479ed
3. 0xede662b4f0496ef0a0c50b4577c38a4a99895c9af51e64dcb6691572071358a0
4. 0xdbfce9073861583e9cf495c7cd1be00f9b36aeb8dc1897b26532f43a70a78ed6
5. 0x832328e7ba5a42678e560aca8890aaebc4e9ba11013899366db39fa3614a1ab7
6. 0x626cd94f726ac93dcdb7805d3b59ddba6753e339b0b8964641c7656674c0c800
7. 0x770a9431bc85142b62c3ec6188e031b2c12590b7b79be93d01406bbee1734a23
8. 0x10c5b6341496751f54126fd491ef8190ce46676ae9523e557490b08828e710c4
9. 0xc36002fcad58dc4c9c600504d0300e3bb8040059875ae08ded4270f982512d4b
10. 0x9f38b2d0cdf030f1ca9ca51487a6c76c5a9623e4e45659d35a1fa1a6e036ec3c
11. 0x763c44f231f5e75793734fa25fb1791b7269f0745f8d34ba7ac82bc2806e3367
12. 0x7ba1b835277802a22a6f62a758420094404a75d3c14f34dd88b403fbf174b26b
13. 0xf9e544d10b80657275e1e196da89ba5336a7cc49eaa0d6d801fb5d632cf5deec
14. 0x8ff18b1523f9fbdd16a5796cbe184b46854c06256508af8de5509b598370c725
15. 0xa383a1cfe9b3f6af67eb4c7642564b9424d46d7fca90e7ba175d549f8b67dd0c
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4