# Order
Structure of an order.
# Constructor
Order(id: ByteVector, matcherPublicKey: ByteVector, assetPair: AssetPair, orderType: Buy|Sell, price: Int, amount: Int, timestamp: Int, expiration: Int, matcherFee: Int, matcherFeeAssetId: ByteVector|Unit, sender: Address, senderPublicKey: ByteVector, bodyBytes: ByteVector, proofs: List[ByteVector])
# Fields
| # | Name | Data type | Description |
|---|---|---|---|
| 1 | id | ByteVector | ID of an order |
| 2 | matcherPublicKey | ByteVector | Public key of a matcher |
| 3 | assetPair | AssetPair | Pair of tokens |
| 4 | orderType | Buy|Sell | Type of an order — selling or buying |
| 5 | price | Int | Price of a token to exchange |
| 6 | amount | Int | Number of tokens to exchange |
| 7 | timestamp | Int | Unix time (opens new window) of the validation of an order by a matcher |
| 8 | expiration | Int | Unix time when an uncompleted order will be cancelled |
| 9 | matcherFee | Int | Transaction fee |
| 10 | matcherFeeAssetId | ByteVector|Unit | Token of a transaction fee. It can only be WAVES |
| 11 | sender | Address | Address of the sender of an order |
| 12 | senderPublicKey | ByteVector | Public key of the sender of an order |
| 13 | bodyBytes | ByteVector | Array of bytes of an order |
| 14 | proofs | List[ByteVector] | Array of proofs |