Evidence row 453140

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-paid-mcp.vercel.app/api/v1/sha256"
    ]
  ],
  "name": "x402-paid-mcp.vercel.app/api/v1/sha256",
  "owner_address": "0x8686bd9bc270df09240e7d220a4bd4c627dccb03",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8686bd9BC270Df09240E7D220A4Bd4c627DCCb03",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "2miRk3MikF5Uetgkd7o9MY7W6BESUaQTkDFupDZVPBym",
        "scheme": "exact"
      }
    ],
    "description": "Compute a SHA-256 hex digest of a text payload. Cryptographic hash / checksum helper. Not an attestation.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "data": "hello",
              "encoding": "utf8"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "encoding": "utf8",
              "sha256": "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "data": {
                      "description": "Payload to hash",
                      "type": "string"
                    },
                    "encoding": {
                      "description": "utf8 | hex | base64 (default utf8)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "data"
                  ]
                },
                "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": "2026-10-27T10:16:52.655Z",
    "quality": {
      "l30DaysTotalCalls": 36,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-22T20:55:01.858Z"
    },
    "resource": "https://x402-paid-mcp.vercel.app/api/v1/sha256",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Compute a SHA-256 hex digest of a text payload. Cryptographic hash / checksum helper. Not an attestation."
}

What the leaf hashes

{"body":"f51713c8e6417ff7df06f1ee1bc1f1c5c87da44f762460d909408337b71e7ae0","id":453140,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100600408663,"prev":125397,"subject":"x402_bazaar:https://x402-paid-mcp.vercel.app/api/v1/sha256","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. 0x552c0d2f79d246e5ab6f48b89ed5783c4cfdea54ea020181300b26673025753e
2. 0xa160cbcce8a1b4b70f6e7456ebba13769237b581e9b25e7b712b1221e34651b5
3. 0xc2e45d0ffdfbf57c44ab69a212b2c1de0a39c06cf37990a7a959ef27dec8ae45
4. 0xd89e1aff66816a2b10732ca7d237541e7f2cbba4e89bae3e4951415d4f31e18a
5. 0xcba4a43a89af0f1d63cc30d77c8b8d0b19c3798b322f3b60ebc1393275524fc5
6. 0x93675f68bc266834be198319e59344d875169bc54a6797037a693f30da18e77f
7. 0xd8281e31fe050022b99500e3820989c73fcac8299334abe2159d531976a950cf
8. 0x57d4aca64e3ba5b95a2dc7d1184c94c64fb9386e677057082abebc299c3d6697
9. 0xafc8e6fca0b08b1c2eb063916f7db26ad1cba5de626206ff8d1ae049ea7a7962
10. 0x2250983ab1b8dac7279c6d7631fe386cd95b31391cec4a472df9864e9e8abf31
11. 0x70cbb36b38089bd590d59988369200459112eeb685a3d047dc7d6f85d72f0b65
12. 0xbda8a72c454627630518fefedac1e595455f868382eb4add82d53de75ccbae18
13. 0x906b5f0e8ef1fe7894886d84f460bb3239d5f14b14ad4adff27c7dcea6265169
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4