Bridge between Bitcoin and PostgreSQL.
Coinbridge connects the Bitcoin daemon (bitcoind) and a local PostgreSQL database. It listens for transaction confirmations and automatically updates a transactions table in your database.
Includes a “payment” method which uses free, instant Bitcoin transfers between accounts in the same wallet, and standard Bitcoin transactions otherwise. Also includes a comprehensive wrapper for Bitcoin’s JSON-RPC functionality.
Coinbridge has been tested with Bitcoin, but it should work for any altcoin that shares Bitcoin’s RPC command suite (i.e., most of them). To add a different coin, enter the new coin’s information into coinbridge/data/coins.json. For wallet listener functionality, you also need to create a coinbridge/newcoin-listen script with newcoin-cli (or newcoind) in place of bitcoin-cli, and point the new coin’s walletnotify to this script in newcoin’s configuration file.
$ pip install coinbridge
Depending on your system, compiling Bitcoin from scratch can be a headache. On Ubuntu, you can simply install bitcoind from the bitcoin PPA:
$ apt-get install python-software-properties $ add-apt-repository ppa:bitcoin/bitcoin $ apt-get update $ apt-get install bitcoind
A convenience script, init.sh, is included that will do some initial configuration for you. I have only tested this on Ubuntu 12.04/14.04 so far. The below steps are only necessary if init.sh does not work for you:
Set up a pgpass file so transaction confirmations can be autologged to Postgres. Replace HOST, PORT, USER, DATABASE, PASSWORD with your own settings. Note: coinbridge/db.py expects the username to be coinbridge. If you use a different username, you must also create a coinbridge/data/pg.cfg file (containing the HOST:PORT:USER:DATABASE:PASSWORD string) so that Python can connect to Postgres.
$ touch ~/.pgpass $ echo HOST:PORT:USER:DATABASE:PASSWORD >> ~/.pgpass $ chmod 600 ~/.pgpass
Set environment variables:
$ echo "export BRIDGE=/path/to/coinbridge" >> ~/.profile $ echo "export PGPASSFILE=$HOME/.pgpass" >> ~/.profile $ source ~/.profile
Finally, you need to point Bitcoin’s walletnotify at coinbridge/bitcoin-listen:
$ apt-get install jq $ echo "walletnotify=$BRIDGE/coinbridge/bitcoin-listen %s" >> ~/.bitcoin/bitcoin.conf
from coinbridge import Bridge bridge = Bridge() bridge.payment(from_account, to_account, amount)
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