Our Support Status for OKJ （formerly OKCoin Japan）

This page introduces the trade types that can be obtained via OKJ exchange file.

1．Period for which history can be obtained (API)

• Only transaction history from the past 3 months can be retrieved.
  ​Due to exchange limitations, only the past 3 months of transaction history can be automatically retrieved. To include older transactions, please upload a file obtained from the exchange or create and upload a Custom File.
  How to get trade history from OKJ（formerly OKCoin Japan）

  As of April 13, 2026, the exchange allows retrieval of up to 2 years of history due to a specification change. However, after a system update scheduled later this year, it may be limited to 3 months again.
   

• Please re-sync the API manually at least once every 3 months
  Transaction history older than 3 months will not be reflected, so it is necessary to perform regular API re-synchronization within that period after linking.

2. Period for which history can be obtained (File)

• You can download data for up to 36 months in the past.
• Each export is limited to a maximum of 3 months of data per request.
  If you need data for a period longer than 3 months, please download it in multiple batches.
  For security and consistency, we recommend including a 1-day overlap between each batch.
  (For example, if you download data for 1/1–3/31, your next batch should cover 3/30–5/1.)

3．Support Status for OKJ

*1 Regarding the history of "withdrawal" due to the exchange's specifications, the API will only deliver the history of the past 100 transactions.

*2 Regarding the history of "adjustments," the file does not contain transaction details that can be identified by a third party, so it is not processed automatically. Please upload it as a custom transaction yourself as needed.

4．Transactions Not Automatically Reflected via API or File

If you can identify the details of your transactions—such as by checking them on the exchange’s interface—please create a Custom File and enter the transactions yourself before uploading it. 
Custom File for any other trades
How to upload a Custom File

【Related Articles】

How to get trade history from OKJ

How to get an API key from OKJ