I installed the bitcoind and started it as daemon. After 10hours I’ve tried “du -h” ubuntu@ip-172-31-37-93:~/.Bitcoin$ du -h 16K ./database 59M ./blocks/index 29G ./blocks 646M ./chainstate 30G . How to know if it synced or […]

Is there any Web API available for us to query Blockchain data in hex format? The format should follow the standard (https://en.Bitcoin.it/wiki/Block#Block_structure) structure rather than JSON.

I backed up my private key and restored it into a new copy of Multibit (difference machine). The import was successful but the public key address has not been updated with my previous address. I’ve […]

Where can I find a full list of RPCs that are not listed in the output of the help command? (such as invalidateblock etc.)

I am having problem signing the transaction using BitcoinJ library without the Wallet instance, I only have the Transaction class instance and the ECKey in order to sign the transaction. Is there a way to […]

Is there any way to check for this data in blockchain? I want to search this value: 554e6963444320 and want to return this transaction https://blockchain.info/tx/7e92e90f221ad28daf42b5b8bda4c8e244e37af48527fcd12b2518db5d3315bd

If I have the public key and signature for a transaction how do I get the hash value that is used in verify(hash, sig, pubkey). I want to know how to work backwards from a […]

Been trawling through a lot of information (I know this similar issue has probably come up a fair bit) on this issue and going round in circles a bit. I am not the most tech […]

I setup BitcoinD on a Windows 7 PC. I configured for defaults except user/pw and rpcallowip=192.168.1.0/255.255.255.0. have also tried 192.168.1.* with no luck. I ultimately want to use an Antminer to connect to it for […]

I know that in the case of electrum there is a gap limit and it will keep generating addresses until it finds a number of consecutive empty addresses equal to the gap limit. What about […]