{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/blockchain/refs/heads/main/json-schema/data-api-transaction-schema.json",
  "title": "Transaction",
  "description": "A Bitcoin transaction with its inputs and outputs.",
  "type": "object",
  "properties": {
    "hash": {
      "type": "string",
      "description": "Transaction hash.",
      "example": "00000000000000000004f4e7a18a09b1f8e96d6fb01d9b6fce4d12cb3f8a7e21"
    },
    "ver": {
      "type": "integer",
      "description": "Transaction version.",
      "example": 1
    },
    "vin_sz": {
      "type": "integer",
      "description": "Number of inputs.",
      "example": 1
    },
    "vout_sz": {
      "type": "integer",
      "description": "Number of outputs.",
      "example": 1
    },
    "size": {
      "type": "integer",
      "description": "Serialized transaction size in bytes.",
      "example": 1
    },
    "weight": {
      "type": "integer",
      "description": "Transaction weight (BIP141).",
      "example": 1
    },
    "fee": {
      "type": "integer",
      "format": "int64",
      "description": "Fee paid in Satoshi.",
      "example": 1
    },
    "relayed_by": {
      "type": "string",
      "description": "IP address that relayed the transaction."
    },
    "lock_time": {
      "type": "integer",
      "format": "int64",
      "description": "Lock time (block height or Unix seconds).",
      "example": 1748609400000
    },
    "tx_index": {
      "type": "integer",
      "format": "int64",
      "description": "Internal transaction index.",
      "example": 1
    },
    "double_spend": {
      "type": "boolean",
      "description": "True if the transaction is a known double-spend.",
      "example": true
    },
    "time": {
      "type": "integer",
      "format": "int64",
      "description": "First-seen time (Unix seconds).",
      "example": 1748609400000
    },
    "block_index": {
      "type": "integer",
      "format": "int64",
      "description": "Block index containing the transaction (null if unconfirmed).",
      "example": 1
    },
    "block_height": {
      "type": "integer",
      "description": "Block height containing the transaction (null if unconfirmed).",
      "example": 851234
    },
    "inputs": {
      "type": "array",
      "description": "Transaction inputs.",
      "items": {
        "type": "object",
        "description": "A single Bitcoin transaction input.",
        "properties": {
          "sequence": {
            "type": "integer",
            "format": "int64",
            "description": "Sequence number.",
            "example": 1
          },
          "witness": {
            "type": "string",
            "description": "SegWit witness data."
          },
          "script": {
            "type": "string",
            "description": "Input script (scriptSig) as hex."
          },
          "prev_out": {
            "$ref": "#/components/schemas/TxOutput"
          }
        }
      }
    },
    "out": {
      "type": "array",
      "description": "Transaction outputs.",
      "items": {
        "type": "object",
        "description": "A single Bitcoin transaction output (a UTXO before it is spent).",
        "properties": {
          "type": {
            "type": "integer",
            "description": "Output type indicator.",
            "example": 1
          },
          "spent": {
            "type": "boolean",
            "description": "True if the output has been spent.",
            "example": true
          },
          "value": {
            "type": "integer",
            "format": "int64",
            "description": "Value in Satoshi.",
            "example": 100000
          },
          "spending_outpoints": {
            "type": "array",
            "description": "Outpoints that spent this output (when spent).",
            "items": {
              "type": "object",
              "properties": {
                "tx_index": {
                  "type": "integer",
                  "format": "int64"
                },
                "n": {
                  "type": "integer"
                }
              }
            }
          },
          "n": {
            "type": "integer",
            "description": "Output index within the transaction.",
            "example": 1
          },
          "tx_index": {
            "type": "integer",
            "format": "int64",
            "description": "Internal transaction index.",
            "example": 1
          },
          "script": {
            "type": "string",
            "description": "Output script (scriptPubKey) as hex."
          },
          "addr": {
            "type": "string",
            "description": "Destination address (when derivable)."
          }
        }
      }
    }
  }
}