# Query Data With Postman

If you're familiar with postman, you could put the query as the body and add application/graphql as the content-type in the request header, then POST the request to https://ocap.arcblock.io/api/btc:

Note that the API endpoint is:

• BitCoin: https://ocap.arcblock.io/api/btc
• Ethereum: https://ocap.arcblock.io/api/eth