# NFT Marketplace

| Property                 | Description                                                                                    | Type   |
| ------------------------ | ---------------------------------------------------------------------------------------------- | ------ |
| timestamp                | The timestamp of the transfer.                                                                 | number |
| chain\_id                | The standard id of the chain.                                                                  | number |
| block\_number            | The block number of the transfer.                                                              | number |
| transaction\_hash        | The transaction hash of the transfer.                                                          | string |
| log\_index               | The event log. For transactions that don't emit event, create arbitrary index starting from 0. | number |
| nft\_collection\_address | The contract address of the NFT collection.                                                    | string |
| nft\_id                  | The unique identifier of the NFT.                                                              | string |
| sender\_address          | The address of the sender of the NFT.                                                          | string |
| receiver\_address        | The address of the receiver of the NFT.                                                        | string |