{
  "x402Version": 2,
  "id": 41576,
  "slug": "41576",
  "resource": "https://mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/proxy",
  "description": "TraceFast live Ethereum data: the implementations a proxy contract has been observed delegating to — from its EIP-1167 bytecode, its EIP-1967 implementation or beacon slot, or its OpenZeppelin v1 slot — newest first, each with the blocks it was seen at and whether it has since been replaced. Path address: The proxy contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-proxy.md",
  "type": "http",
  "serviceName": "TraceFast",
  "resourceType": "Blockchain Data",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "20000",
      "amountUsd": 0.02,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "example": {
      "data": {
        "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
        "chainId": 1,
        "implementations": [
          {
            "confidence": 1,
            "firstSeenBlock": 18963716,
            "implementation": "0x43506849d7c04f9138d1a2050bbf3a0c054402dd",
            "isSelfDelegation": false,
            "lastSeenBlock": 18963716,
            "proxyFamily": "unknown",
            "slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
            "slotLastEvent": {
              "blockNumber": 18963716,
              "kind": "upgrade",
              "txHash": "0xae3ad89e569f27d47a8a02999a6d937c12aaa6bc50e66650e7cbd3244bde9951"
            },
            "source": "storage_oz_v1",
            "supersededBy": null
          }
        ]
      }
    },
    "type": "json"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "pathParams": {
            "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
          },
          "queryParams": {},
          "type": "http"
        },
        "output": {
          "example": {
            "data": {
              "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
              "chainId": 1,
              "implementations": [
                {
                  "confidence": 1,
                  "firstSeenBlock": 18963716,
                  "implementation": "0x43506849d7c04f9138d1a2050bbf3a0c054402dd",
                  "isSelfDelegation": false,
                  "lastSeenBlock": 18963716,
                  "proxyFamily": "unknown",
                  "slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
                  "slotLastEvent": {
                    "blockNumber": 18963716,
                    "kind": "upgrade",
                    "txHash": "0xae3ad89e569f27d47a8a02999a6d937c12aaa6bc50e66650e7cbd3244bde9951"
                  },
                  "source": "storage_oz_v1",
                  "supersededBy": null
                }
              ]
            }
          },
          "type": "json"
        }
      },
      "routeTemplate": "/api/v1/chains/1/contracts/:address/proxy",
      "schema": {
        "properties": {
          "input": {
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "pathParams": {
                "type": "object"
              }
            },
            "required": [
              "method"
            ]
          }
        }
      }
    },
    "offer-receipt": {
      "info": {
        "offers": [
          {
            "acceptIndex": 0,
            "format": "jws",
            "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6bXBwLnRyYWNlZmFzdC54eXojMjAyNi0xMCJ9.eyJhbW91bnQiOiIyMDAwMCIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIiwicGF5VG8iOiIweDJBNjU0OTFFOTNBZDBkNDg0Yjc0NDA1NDAxQTM4ZTJFMEU1RURkN2UiLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vbXBwLnRyYWNlZmFzdC54eXovYXBpL3YxL2NoYWlucy8xL2NvbnRyYWN0cy8weDgzMzU4OWZDRDZlRGI2RTA4ZjRjN0MzMkQ0ZjcxYjU0YmRBMDI5MTMvcHJveHkiLCJzY2hlbWUiOiJleGFjdCIsInZhbGlkVW50aWwiOjE3OTE0NDExMDUsInZlcnNpb24iOjF9.Ompmyqgc9KXN-rxK36luKWA3vXCUN4Z3HlaEHV4WKL4yeuEhI51ok4Nlm5SJktFPc84s7tiLaaghbf_3FbveCA"
          }
        ]
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "offers": {
            "items": {
              "properties": {
                "acceptIndex": {
                  "type": "integer"
                },
                "format": {
                  "type": "string"
                },
                "payload": {
                  "properties": {
                    "amount": {
                      "type": "string"
                    },
                    "asset": {
                      "type": "string"
                    },
                    "network": {
                      "type": "string"
                    },
                    "payTo": {
                      "type": "string"
                    },
                    "resourceUrl": {
                      "type": "string"
                    },
                    "scheme": {
                      "type": "string"
                    },
                    "validUntil": {
                      "type": "integer"
                    },
                    "version": {
                      "type": "integer"
                    }
                  },
                  "required": [
                    "version",
                    "resourceUrl",
                    "scheme",
                    "network",
                    "asset",
                    "payTo",
                    "amount"
                  ],
                  "type": "object"
                },
                "signature": {
                  "type": "string"
                }
              },
              "required": [
                "format",
                "signature"
              ],
              "type": "object"
            },
            "type": "array"
          }
        },
        "required": [
          "offers"
        ],
        "type": "object"
      }
    },
    "tracefast-receipt": {
      "info": {
        "method": "contract-proxy",
        "version": 1
      }
    }
  },
  "tags": [
    "blockchain",
    "ethereum",
    "address-intelligence",
    "labels",
    "entities",
    "bazaar",
    "offer-receipt",
    "tracefast-receipt"
  ],
  "sourceHost": "mpp.tracefast.xyz",
  "lastUpdated": "2026-10-08T06:26:45.87Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 2,
    "lastCalledAt": "2026-10-08T06:26:45.654Z"
  },
  "metadata": {
    "serviceName": "TraceFast",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
                "chainId": 1,
                "implementations": [
                  {
                    "confidence": 1,
                    "firstSeenBlock": 18963716,
                    "implementation": "0x43506849d7c04f9138d1a2050bbf3a0c054402dd",
                    "isSelfDelegation": false,
                    "lastSeenBlock": 18963716,
                    "proxyFamily": "unknown",
                    "slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
                    "slotLastEvent": {
                      "blockNumber": 18963716,
                      "kind": "upgrade",
                      "txHash": "0xae3ad89e569f27d47a8a02999a6d937c12aaa6bc50e66650e7cbd3244bde9951"
                    },
                    "source": "storage_oz_v1",
                    "supersededBy": null
                  }
                ]
              }
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v1/chains/1/contracts/:address/proxy",
        "schema": {
          "properties": {
            "input": {
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "type": "object"
                }
              },
              "required": [
                "method"
              ]
            }
          }
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "acceptIndex": 0,
              "format": "jws",
              "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6bXBwLnRyYWNlZmFzdC54eXojMjAyNi0xMCJ9.eyJhbW91bnQiOiIyMDAwMCIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIiwicGF5VG8iOiIweDJBNjU0OTFFOTNBZDBkNDg0Yjc0NDA1NDAxQTM4ZTJFMEU1RURkN2UiLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vbXBwLnRyYWNlZmFzdC54eXovYXBpL3YxL2NoYWlucy8xL2NvbnRyYWN0cy8weDgzMzU4OWZDRDZlRGI2RTA4ZjRjN0MzMkQ0ZjcxYjU0YmRBMDI5MTMvcHJveHkiLCJzY2hlbWUiOiJleGFjdCIsInZhbGlkVW50aWwiOjE3OTE0NDExMDUsInZlcnNpb24iOjF9.Ompmyqgc9KXN-rxK36luKWA3vXCUN4Z3HlaEHV4WKL4yeuEhI51ok4Nlm5SJktFPc84s7tiLaaghbf_3FbveCA"
            }
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "offers": {
              "items": {
                "properties": {
                  "acceptIndex": {
                    "type": "integer"
                  },
                  "format": {
                    "type": "string"
                  },
                  "payload": {
                    "properties": {
                      "amount": {
                        "type": "string"
                      },
                      "asset": {
                        "type": "string"
                      },
                      "network": {
                        "type": "string"
                      },
                      "payTo": {
                        "type": "string"
                      },
                      "resourceUrl": {
                        "type": "string"
                      },
                      "scheme": {
                        "type": "string"
                      },
                      "validUntil": {
                        "type": "integer"
                      },
                      "version": {
                        "type": "integer"
                      }
                    },
                    "required": [
                      "version",
                      "resourceUrl",
                      "scheme",
                      "network",
                      "asset",
                      "payTo",
                      "amount"
                    ],
                    "type": "object"
                  },
                  "signature": {
                    "type": "string"
                  }
                },
                "required": [
                  "format",
                  "signature"
                ],
                "type": "object"
              },
              "type": "array"
            }
          },
          "required": [
            "offers"
          ],
          "type": "object"
        }
      },
      "tracefast-receipt": {
        "info": {
          "method": "contract-proxy",
          "version": 1
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "mpp.tracefast.xyz",
    "manifest_name": "mpp.tracefast.xyz",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "data": {
      "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
      "chainId": 1,
      "implementations": [
        {
          "confidence": 1,
          "firstSeenBlock": 18963716,
          "implementation": "0x43506849d7c04f9138d1a2050bbf3a0c054402dd",
          "isSelfDelegation": false,
          "lastSeenBlock": 18963716,
          "proxyFamily": "unknown",
          "slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
          "slotLastEvent": {
            "blockNumber": 18963716,
            "kind": "upgrade",
            "txHash": "0xae3ad89e569f27d47a8a02999a6d937c12aaa6bc50e66650e7cbd3244bde9951"
          },
          "source": "storage_oz_v1",
          "supersededBy": null
        }
      ]
    }
  }
}