I want to Send bitcoin from my wallet to another bitcoin address. I have been working on their API.


This is what i tried to do.

But here the amount is bit confusing to me. My product price is 0.03000000 BTC. So what will be the value of $amount ?

Official documentation says: $amount Amount to send in satoshi.

And what will be the value of $fee ?

Documentation: https://blockchain.info/api/blockchain_wallet_api

1 Answer 1


A Satoshi is the smallest fraction of a Bitcoin that can currently be sent: 0.00000001 BTC, that is, a hundredth of a millionth BTC. In the future, however, the protocol may be updated to allow further subdivisions, should they be needed.

Further examples of units

1 BTC = 1,000 mBTC (millibitcoin)
1 BTC = 1,000,000 μBTC (microbitcoin)
1 BTC = 100,000,000 Satoshis
1 mBTC = 100,000 Satoshis
1 μBTC (microbitcoin) = 100 Satoshis

So $amount will be 100000000*0.03 = 3000000

and $fee will be Transaction fee value in satoshi (Must be greater than default fee) (Optional)

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