Ethereum: Bitcoin Core Connection Problem
As a developer or user of the Ethereum blockchain, you need to make sure that your network connections are secure and working properly. In this article, we will look at a problem that can arise when connecting to the Ethereum network using Bitcoin Core (BTC-C) on Linux.
Problem: Invalid RPC user/password
The error message you receive indicates that an authorization failure occurred due to an incorrect RPCUser
or RPCPassword
. This can happen if your username and password do not match the ones used to install BTC-C. Let’s solve this problem step by step:
Step 1: Check your installation
Before proceeding, make sure you have installed BTC-C correctly using the following command:
sudo apt-get update && sudo apt-get install bitcoin-core
If you didn’t use apt-get' or the installation failed, try again.
Step 2: Check your username and password
In your case, you mentioned that the host system is Linux Debian Stretch (9/x testing). Make sure you’ve created the file with the correct permissions for your username. Create a new file in/home/myUsername/.bitcoinrcor add it to the end of the existing
~/.bitcoin.conffile:
sudo nano ~/.bitcoinrc
Add the following lines, replacing your actual username and password:
rpcuser=myUsername
rpcpassword=myPassword
Replace myUsernameand
myPasswordwith the credentials you need.
Step 3: Check the configuration
After updating the configuration file, restart BTC-C:
sudo systemctl restart bitcoin-core
Now try to connect to the Ethereum network using BTC-C. Open a terminal, navigate to the /home/myUsername/Downloadsdirectory (replace
~with your actual username):
cd /home/myUsername/Downloads
Run the following command:
bitcoin-cli getmininginfo --version
This should display the BTC-C version installed on your system. If you still have problems, try resetting the configuration file or updating BTC-C to the latest version.
Examples of usage:
- Create a new wallet by running sudo bitcoin-qt –wallet-directory=/home/myUsername/.bitcoin-wallet
- Check the connection withbitcoin-cli getbalance
- Try to connect to the Ethereum network using
If you have additional problems or concerns, please provide more information about the error message or your environment.