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Evidence row 63918

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://agentshelf.syntexa.ch/v1/base-erc20-meta
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
02d1949baadf7c4a4ba180d03b358177c41bb27b0264a288c7c56474236339d5
Leaf
0xaa6698a0490c256ebd09e9426122517c44f2790bc12ef731d68ac55531159e9b

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agentshelf.syntexa.ch/v1/base-erc20-meta"
    ]
  ],
  "name": "agentshelf.syntexa.ch/v1/base-erc20-meta",
  "owner_address": "0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
        "scheme": "exact"
      }
    ],
    "description": "Call when an agent needs ERC-20 name, symbol, decimals, and totalSupply for one Base token. Send token (example Circle USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Read-only eth_call on eip155:8453. Not a contract, or no ERC-20 methods, errors. No spend. Send JSON {\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/base-erc20-meta first.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "billed": true,
              "decimals": 6,
              "name": "USD Coin",
              "network": "eip155:8453",
              "ok": true,
              "receipt_id": "rcpt_01EXAMPLE000000000000000",
              "symbol": "USDC",
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "total_supply": "1000000",
              "total_supply_raw": "1000000000000",
              "warnings": []
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "examples": [
                    {
                      "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                    }
                  ],
                  "properties": {
                    "token": {
                      "description": "ERC-20 contract on Base mainnet (eip155:8453). Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Circle USDC). EIP-55 or all one case. Returns name, symbol, decimals, and total supply. Read-only.",
                      "examples": [
                        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "token"
                  ],
                  "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": {
                  "additionalProperties": false,
                  "examples": [
                    {
                      "billed": true,
                      "decimals": 6,
                      "name": "USD Coin",
                      "network": "eip155:8453",
                      "ok": true,
                      "receipt_id": "rcpt_01EXAMPLE000000000000000",
                      "symbol": "USDC",
                      "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                      "total_supply": "1000000",
                      "total_supply_raw": "1000000000000",
                      "warnings": []
                    }
                  ],
                  "properties": {
                    "billed": {
                      "examples": [
                        true
                      ],
                      "type": "boolean"
                    },
                    "decimals": {
                      "anyOf": [
                        {
                          "minimum": 0,
                          "type": "integer"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "examples": [
                        6
                      ]
                    },
                    "name": {
                      "examples": [
                        "USD Coin"
                      ],
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "network": {
                      "const": "eip155:8453",
                      "examples": [
                        "eip155:8453"
                      ],
                      "type": "string"
                    },
                    "ok": {
                      "const": true,
                      "examples": [
                        true
                      ],
                      "type": "boolean"
                    },
                    "receipt_id": {
                      "examples": [
                        "rcpt_01EXAMPLE000000000000000"
                      ],
                      "type": "string"
                    },
                    "symbol": {
                      "examples": [
                        "USDC"
                      ],
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "token": {
                      "examples": [
                        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                      ],
                      "type": "string"
                    },
                    "total_supply": {
                      "examples": [
                        "1000000"
                      ],
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "total_supply_raw": {
                      "examples": [
                        "1000000000000"
                      ],
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "warnings": {
                      "default": [],
                      "examples": [
                        []
                      ],
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    }
                  },
                  "required": [
                    "ok",
                    "receipt_id",
                    "billed",
                    "token",
                    "network",
                    "name",
                    "symbol",
                    "decimals",
                    "total_supply_raw",
                    "total_supply"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-11T10:14:05.624Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-11T10:14:05.225Z"
    },
    "resource": "https://agentshelf.syntexa.ch/v1/base-erc20-meta",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Call when an agent needs ERC-20 name, symbol, decimals, and totalSupply for one Base token. Send token (example Circle USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Read-only eth_call on eip155:8453. Not a contract, or no ERC-20 methods, errors. No spend. Send JSON {\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/base-erc20-meta first."
}

What the leaf hashes

{"body":"02d1949baadf7c4a4ba180d03b358177c41bb27b0264a288c7c56474236339d5","id":63918,"kind":"listing","method":"baseline/1","observed_us":1793025455796466,"prev":null,"subject":"x402_bazaar:https://agentshelf.syntexa.ch/v1/base-erc20-meta","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0xaa66823b67d14d0512b3d2344a79afa6ff06c89376bda9094035aa72febfc209
  2. 0x290814173a5719133844c92dbd53b4eaffd98e7e8a7c79024792dbbc81553085
  3. 0xe9d3c6ec1da8c01beeb349ee0df02b74764639dd662aded254ab7b45944a24d9
  4. 0x0ba557fc1daa6b6dd979bcf476f025558198a430fc6d32bee95fa01aed69d0bc
  5. 0xa3950ff0c49fd7ca673f2a7450abe3c17c0ab19080ea7f241e50aaea7723f089
  6. 0x28507fdd550f8a72a8d7101f8c8e14bdfc14e253f40a03572659d1e08dbc1568
  7. 0xba4d8986eb4430230de2a76ec0cc7255cc46821e2401a166d6627ee7f5de1341
  8. 0x5721481dda7051d815c5e8e3d33ba1c9f5b08507d77d331006bd08fd965819f9
  9. 0x67a13a7b274532e8a2df569986a43149c15dd30a3921882e484880330685bbf0
  10. 0x2b0e99631562bdd3560762c8951137943186bf9575ee3728c8efc429f26f9563
  11. 0x34f0b80539e95d0ba892dff063414c35c62850f82e1414765524114c8dbacb57
  12. 0x09a19b8d31a6e948e5051cb72b98b1d2b2bfe053f62d6d24d61c22b3ed1c3f24
  13. 0x4700d6dfdb40e52e2ceb8ffe62c75f3f708d23452f828255fd003d795f5d9d66
  14. 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
  15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
  16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
  17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON