Blockdaemon Bitcoin nodes expose an RPC interface for connecting and interactions.
Connecting:
Command Line cURL
The following describes how to run a simple cURL command that prints the current blockchain information from the node.
The cURL command below can be used to retrieve the blockchain status of your node. Replace <node endpoint> with your node's endpoint plus authorization token from the Connect page.
You can get this address from your node dashboard, connect when logged in at blockdaemon.com.
curl --user blockdaemon:blockdaemon --data
'{"method":"getblockchaininfo","params":[],"id":1,"jsonrpc":"2.0"}' -H
"Content-Type: application/json" -X POST https://<node endpoint>
Connecting via Python script with Python
The following describes how to run a simple Python application that prints the current best block.
The following text assumes a basic knowledge of Python 3 and pip.
Install Python libraries
Install the Python library python-bitcoinrpc. We will use this library to communicate with the RPC interface.
pip3 install python-bitcoinrpc
Copy script
Copy the following Python program into a file called bitcoin_rpc.py
import pprint from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
rpc_user = "blockdaemon" rpc_password = "blockdaemon" rpc_connection = AuthServiceProxy("<your node endpoint>" .format(rpc_user, rpc_password)) best_block_hash = rpc_connection.getbestblockhash() best_block = rpc_connection.getblock(best_block_hash) pprint.pprint(best_block)
Start the Python script
python3 bitcoin_rpc.py
Further Reading
Python-bitcoinrpc . -> Documentation
Allowed JSON RPC Commands
Comments
when I run this file I am receiving the error
File "C:\crypto\lndenv\lib\site-packages\bitcoinrpc\authproxy.py", line 100, in __init__
authpair = user + b':' + passwd
TypeError: unsupported operand type(s) for +: 'NoneType' and 'bytes'
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