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 implement it ?
This page describes SIGHASH flags:
OP_CHECKSIG extracts a non-stack argument from each signature it evaluates, allowing the signer to decide which parts of the transaction to sign. Since the signature protects those parts of the transaction from modification, this lets signers selectively choose to let other people modify their transactions.
But how can I extract the SIGHASH flags from the signature?
I want to access unspent data of a specific bitcoin address.
I am trying this command
bitcoin-cli -regtest listunspent “some bitcoin address”
But I am always getting an empty list. I am using local bitcoind server on windows 7.
What should I do or use any function for getting desired output ?
What’s the M0/MB inflation rate of Bitcoin?
Note: I’m asking about multiple years in order to make this question less likely to go out of date.
Is it possible to send recurring bitcoin payments via the bitcoin protocol? Is there a service which provides an API to do so?
Does anyone know if Bitcore offer a testnet API to play around with?
I’m implementing an Escrow system using the API and Node.js
Thanks.
Has anyone experience using the Bitcore API for Escrow purposes with node.js?
I assume, you’d need to create a new a address, then somehow create a new transaction using the newly created address, the probe that address for it’s balance until its fulfilled. I’ve had a look over the docs, but couldn’t find anything. Currently you can run bitcoind on a server and connect to this using RPC, but I’d like to try using Bitcore instead but achieve the same result.
Thanks.
How do I solo mine with an AntMiner?
AntMiners use cgminer, which certainly supports GBT, but when I use http://<my_local_net_ip>:8332/ and my bitcoind username and password for “Worker” and “Password,” respectively, on the “Miner Configuration” tab of my AntMiner’s page, the AntMiner says my “pool” is dead. bfgminer can connect, via RPC, to my local bitcoind “pool” just fine, so the issue is with AntMiner/cgminer.
I am following this link, trying to perform SHA-256 on a given public key.
However, I cannot get the expected result.
I am using the sha256 library in python hashlib
The input is
0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6
Mine output is
32511e82d56dcea68eb774094e25bab0f8bdd9bc1eca1ceeda38c7a43aceddce
The expected output on bitcoin.it is
600FFE422B4E00731A59557A5CCA46CC183944191006324A447BDB2D98D4B408
Do I miss anything?