{
  "x402Version": 2,
  "id": 2461,
  "slug": "2461",
  "resource": "https://www.tereno.xyz/api/v1/claims",
  "description": "Publish a deterministic claim about a Base proxy and let the market try to break it. You assert that a contract's implementation slot held one address across a block range, fund a reward for whoever finds a block where it did not, and Tereno writes the claim onchain and adjudicates counterexamples by historical storage reads. If nobody collects before your deadline, you get a reproducible survival receipt: not an audit, but proof the claim stood in public with money on it.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "250000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "method": "POST",
          "queryParams": {
            "address": "0x1111111111111111111111111111111111111111",
            "claimType": "contract.upgrade.window.claim",
            "deadlineHours": 72,
            "fromBlock": 20000000,
            "rewardUsd": 5,
            "toBlock": 20500000,
            "wallet": "0x2222222222222222222222222222222222222222"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "breadcrumbStatus": "written",
            "claim": {
              "claimId": "0xabc",
              "claimType": "contract.upgrade.window.claim",
              "status": "open"
            },
            "pricing": {
              "currency": "USDC",
              "pricePaidUsd": 0.25
            },
            "receiptUrl": "/api/v1/claims/0xabc/receipt"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "queryParams": {
                "additionalProperties": false,
                "properties": {
                  "address": {
                    "description": "Base proxy contract the assertion is about.",
                    "pattern": "^0x[a-fA-F0-9]{40}$",
                    "type": "string"
                  },
                  "claimType": {
                    "const": "contract.upgrade.window.claim",
                    "description": "The only claim type whose survival is worth a receipt."
                  },
                  "deadlineHours": {
                    "description": "How long the claim stays open to challenge, 1 to 720.",
                    "type": "integer"
                  },
                  "fromBlock": {
                    "description": "Inclusive start of the window. The window must span 1000 to 2000000 blocks.",
                    "type": "integer"
                  },
                  "implementation": {
                    "description": "Optional. Defaults to whatever the implementation slot resolves to at toBlock.",
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "rewardUsd": {
                    "description": "What you will pay the first wallet that falsifies your claim. Not escrowed by Tereno.",
                    "type": "number"
                  },
                  "toBlock": {
                    "description": "Inclusive end of the window. Must not be in the future.",
                    "type": "integer"
                  },
                  "wallet": {
                    "description": "The opener wallet, which must sign the request.",
                    "pattern": "^0x[a-fA-F0-9]{40}$",
                    "type": "string"
                  }
                },
                "required": [
                  "address",
                  "fromBlock",
                  "toBlock",
                  "rewardUsd",
                  "deadlineHours",
                  "wallet"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "breadcrumbStatus": {
                    "type": "string"
                  },
                  "claim": {
                    "type": "object"
                  },
                  "pricing": {
                    "type": "object"
                  },
                  "receiptUrl": {
                    "type": "string"
                  }
                },
                "required": [
                  "claim",
                  "breadcrumbStatus",
                  "receiptUrl",
                  "pricing"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "builder-code": {
      "info": {
        "a": "bc_8kag0yoi"
      },
      "schema": {
        "$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"
            },
            "type": "array"
          },
          "w": {
            "description": "Wallet builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          }
        },
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar",
    "builder-code"
  ],
  "sourceHost": "www.tereno.xyz",
  "lastUpdated": "2026-09-13T14:34:20.31Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-13T14:34:20.111Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "www.tereno.xyz",
    "manifest_name": "www.tereno.xyz",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}