Evidence row 1508459

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/evaluateExpression"
    ]
  ],
  "name": "Sindri",
  "owner_address": "0x548efd4f4d4a5c3669dbb4cbb2b1a637feeec5f6",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "APer2AbhckyMWyJanW2MZ2eRLcpL9Lmhks8rkmXfqjRG",
        "scheme": "exact"
      }
    ],
    "description": "Safe arithmetic expression evaluator. Parses and evaluates expressions with +, -, *, /, ^, and parentheses using a bounded-recursion parser (no eval/Function), avoiding the arithmetic slips an LLM makes on long expressions.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "expression": "(2 + 3) * 4"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "params": {
                  "expression": "(2 + 3) * 4"
                },
                "result": 20
              },
              "ok": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "expression": {
                      "description": "Arithmetic expression to evaluate, e.g. \"(2 + 3) * 4\". Max 200 characters.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "expression"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "x402_api_vendor",
          "s": [
            "cdp_sdk_server"
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    },
    "lastUpdated": "2026-10-08T06:26:24.2Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-08T06:26:24.092Z"
    },
    "resource": "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/evaluateExpression",
    "serviceName": "Sindri",
    "tags": [
      "expression evaluator",
      "arithmetic",
      "math parser"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Safe arithmetic expression evaluator. Parses and evaluates expressions with +, -, *, /, ^, and parentheses using a bounded-recursion parser (no eval/Function), avoiding the arithmetic slips an LLM makes on long expressions."
}

What the leaf hashes

{"body":"919cb184db612e8ef4b603d6897365594f9a949b16bc4fadd28ddb51e3ea0a3e","id":1508459,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793472752088915,"prev":1261090,"subject":"x402_bazaar:https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/evaluateExpression","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0x1c2a13e57cea6c5e511d8bdaea034a60d7530ffb57b40cd6ed85bd4161b34951
2. 0x5c0c7b4597f80ccb1caac3cc57c41ba56e6ef1992021b599aac92493dfe09bbb
3. 0x3f1bd81ad2c6dc51eda3193e705f3393e1018e833285e03e682baef560d112cd
4. 0xa278bf8f397750c2bc222657087916a0f52828c702af27ec91ce0923490d1afc
5. 0x985aa761572b47f1b820fd64b32442f5c72c8d5502c43f9b1c91d35690d33a00
6. 0xf7b2f89e409003f8fdcf78e0405afb1228621a9861658be66f51ddc6e3777bd2
7. 0x4fde3125c70a08672ec685f645ef191e66de693147b716ced1da410d603910cf
8. 0x62f5fe641623c3bfb13a6b58cb805c06380aa1eb06d7e829d1afc6c8b11fe8cb
9. 0xf67b58fdd89dad2175905874432bbc53da9f0917f613c98d9a278c9ab2e579c0
10. 0xd1ad14fd618e6ce26264a0120015ab6e33aac0431ee2963d69c71bc88fef6500
11. 0xd8fb2a5949d25194a696dab268d2c88f3691ddf4e4769ea1b35d851538f89178
12. 0xf40fe0ab3815639dd0528a1520d05ef37f76984c9e26122d96a7dec2449edb59
13. 0xf1614e76e51b9462cf7a91e5141af61bc7debba634c8798728c24a84f197b6aa
14. 0x9ceb0cca7e6a4252fd4bc9968554fbb343590c4ea20f4c2a07778fe411162b49
15. 0x95ec49fc7f2c7be30422eaa1d0d6036836dd63ff46a8ed4027258fcf3eb8cf24
16. 0x2bca4aa3c59fe9209016c64bd8b706423477e3407201a00165afde9abf6fee2b
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0