Shown in the gray area here, describing how to apply, I think, Segwit to a transaction (particularly a Bitcoin Cash tx). The last section is titled "serialized signed transaction" however it doesn’t appear to be […]

I created a brain wallet with a non standard phrase. So I have that, the private and public keys. Now this wallet app wants a 12 word recovery phrase to set up the wallet. How […]

There is something I do not understand. I have handled a few Bitcoin transactions using Android Blockchain app and imported private key. That worked and could buy/sell with btcdirect.eu (start transaction with btcdirect.eu and exchange […]

I once created a Bitcoin wallet with Electron using a hand crafted seed phrase (using the words of the valid word list that time). I now figured it was a bad idea, while it is […]

I’m trying to get unspent transaction using bitcoinj like here without using api calls. How can I do this?

As an example, I would like to consider this transaction: https://blockchain.info/tx/6f7cf9580f1c2dfb3c4d5d043cdbb128c640e3f20161245aa7372e9666168516 I have three questions: 1) The first two entries in the stack are <sig> and <pubKey> for each input. However, the inputs are just […]

As an example, I would like to consider this transaction: https://blockchain.info/tx/6f7cf9580f1c2dfb3c4d5d043cdbb128c640e3f20161245aa7372e9666168516 I have three questions: 1) The first two entries in the stack are <sig> and <pubKey> for each input. However, the inputs are just […]

I have a paper wallet with a public address and an encrypted private key ( with a passphrase ), but no QR code. So I need a way to generate a QR image, or manually […]

I use mSIGNA for my Bitcoin transactions. This is a multi-sig P2SH wallet that requires private keys and an account file to create/view/receive transactions. I’ve searched through the documentation and attempted to find answers online […]