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Title: Questions for developing application for bitcoin Post by: Jessica432 on September 26, 2018, 09:24:23 AM I am new to bitcoin world. I want to set up a local bitcoin full running node and develop my Node JS code talks to node, and provides web api for:
1) Getting balance for any bitcoin address 2) Doing a transfer of bitcoins from any account to any other account. (It may need private key of sender for transfer) I tried bitcoin core earlier, but seems I can not get balance of any address there. I will really appreciate any pointers how can I achieve this. Thanks, Jessica Title: Re: Questions for developing application for bitcoin Post by: aleksej996 on September 26, 2018, 10:32:33 AM In order to get balance for an address that isn't in your wallet in Bitcoin Core, you need to import it first and do a rescan of the blockchain.
You can use importaddress command for this, which will by default do a rescan automatically once the address is imported, unless specified otherwise in an argument. Furthermore, when checking the balance of an address with getbalance command, you need to set include_watchonly argument to true, in case you imported an address without importing it's private keys. Title: Re: Questions for developing application for bitcoin Post by: Jessica432 on September 27, 2018, 12:19:23 AM In order to get balance for an address that isn't in your wallet in Bitcoin Core, you need to import it first and do a rescan of the blockchain. Can above be done programmatically? If yes, would it slow down the execution significantly? Title: Re: Questions for developing application for bitcoin Post by: NeuroticFish on September 27, 2018, 06:28:57 AM While researching I've found this "Bitcoin transaction explorer" code (https://github.com/yogh-io/bitcoin-transaction-explorer).
What caught my eyes and may be interesting for this topic was: Quote If this explorer is run on top of a node that has an address index such as this one: https://github.com/btcdrak/bitcoin/tree/addrindex-0.11 then this explorer will be able to look up the balance of an address and show every output associated with it. The problem is that I didn't understand that "address index" part, nor what's at that link. However, it can be a direction... |