---
updatedAt: 2026-07-29T09:32:45.000Z
---

# Rounds history

Returns mining rounds ordered by round number, newest first.

# OpenAPI definition

```json
{
  "openapi": "3.1.0",
  "info": {
    "title": "CantonView Public API",
    "description": "Public API for accessing Canton Network explorer data through CCView",
    "contact": {
      "name": "API Maintainer",
      "email": "cantonview@pixelplex.io"
    },
    "license": {
      "name": ""
    },
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://ccview.io",
      "description": "Production HTTPS server"
    }
  ],
  "paths": {
    "/api/rounds": {
      "get": {
        "tags": [
          "Rounds"
        ],
        "summary": "Rounds history",
        "description": "Returns mining rounds ordered by round number, newest first.",
        "operationId": "rounds_list_v1",
        "parameters": [
          {
            "name": "offset",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "format": "int64",
              "default": 0
            }
          },
          {
            "name": "limit",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "format": "int64",
              "default": 50
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Rounds history list.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/PagedResponse_RoundView"
                }
              }
            }
          },
          "400": {
            "description": "Bad Request",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "status",
                    "message",
                    "timestamp"
                  ],
                  "properties": {
                    "message": {
                      "type": "string",
                      "description": "Detailed message description.",
                      "example": "message error"
                    },
                    "status": {
                      "type": "integer",
                      "format": "int32",
                      "description": "HTTP status code.",
                      "maximum": 599,
                      "minimum": 400
                    },
                    "timestamp": {
                      "type": "string",
                      "format": "date-time",
                      "description": "Timestamp of error occurrence."
                    }
                  }
                }
              }
            }
          },
          "401": {
            "description": "Unauthorized",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "status",
                    "message",
                    "timestamp"
                  ],
                  "properties": {
                    "message": {
                      "type": "string",
                      "description": "Detailed message description.",
                      "example": "message error"
                    },
                    "status": {
                      "type": "integer",
                      "format": "int32",
                      "description": "HTTP status code.",
                      "maximum": 599,
                      "minimum": 400
                    },
                    "timestamp": {
                      "type": "string",
                      "format": "date-time",
                      "description": "Timestamp of error occurrence."
                    }
                  }
                }
              }
            }
          },
          "404": {
            "description": "Not Found",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "status",
                    "message",
                    "timestamp"
                  ],
                  "properties": {
                    "message": {
                      "type": "string",
                      "description": "Detailed message description.",
                      "example": "message error"
                    },
                    "status": {
                      "type": "integer",
                      "format": "int32",
                      "description": "HTTP status code.",
                      "maximum": 599,
                      "minimum": 400
                    },
                    "timestamp": {
                      "type": "string",
                      "format": "date-time",
                      "description": "Timestamp of error occurrence."
                    }
                  }
                }
              }
            }
          },
          "500": {
            "description": "Internal Server Error",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "status",
                    "message",
                    "timestamp"
                  ],
                  "properties": {
                    "message": {
                      "type": "string",
                      "description": "Detailed message description.",
                      "example": "message error"
                    },
                    "status": {
                      "type": "integer",
                      "format": "int32",
                      "description": "HTTP status code.",
                      "maximum": 599,
                      "minimum": 400
                    },
                    "timestamp": {
                      "type": "string",
                      "format": "date-time",
                      "description": "Timestamp of error occurrence."
                    }
                  }
                }
              }
            }
          },
          "501": {
            "description": "Not Implemented",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "status",
                    "message",
                    "timestamp"
                  ],
                  "properties": {
                    "message": {
                      "type": "string",
                      "description": "Detailed message description.",
                      "example": "message error"
                    },
                    "status": {
                      "type": "integer",
                      "format": "int32",
                      "description": "HTTP status code.",
                      "maximum": 599,
                      "minimum": 400
                    },
                    "timestamp": {
                      "type": "string",
                      "format": "date-time",
                      "description": "Timestamp of error occurrence."
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "PagedResponse_RoundView": {
        "type": "object",
        "required": [
          "data",
          "paging"
        ],
        "properties": {
          "data": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "round_number",
                "current_phase",
                "event_id",
                "contract_id",
                "record_time"
              ],
              "properties": {
                "contract_id": {
                  "type": "string"
                },
                "current_phase": {
                  "$ref": "#/components/schemas/RoundPhase"
                },
                "event_id": {
                  "type": "string"
                },
                "record_time": {
                  "type": "string",
                  "format": "date-time"
                },
                "round_number": {
                  "type": "integer",
                  "format": "int64"
                }
              }
            }
          },
          "paging": {
            "$ref": "#/components/schemas/Paging"
          }
        }
      },
      "Paging": {
        "type": "object",
        "required": [
          "limit",
          "offset",
          "total"
        ],
        "properties": {
          "limit": {
            "type": "integer",
            "format": "integer",
            "example": "10",
            "minimum": 0
          },
          "offset": {
            "type": "integer",
            "format": "integer",
            "example": "0",
            "minimum": 0
          },
          "total": {
            "type": "integer",
            "format": "integer",
            "example": "432",
            "minimum": 0
          }
        }
      },
      "RoundPhase": {
        "type": "string",
        "enum": [
          "Open",
          "Issuing",
          "Summarizing",
          "Closed"
        ]
      }
    },
    "securitySchemes": {
      "ApiKeyAuth": {
        "type": "apiKey",
        "in": "header",
        "name": "X-API-Key"
      }
    }
  },
  "security": [
    {
      "ApiKeyAuth": []
    }
  ],
  "tags": [
    {
      "name": "Rounds",
      "description": "Information about mining rounds"
    }
  ],
  "externalDocs": {
    "url": "https://swagger.io/resources/open-api/",
    "description": "OpenAPI Documentation Reference"
  }
}
```