This is a bitcoin blockchain storage based on bitcoin-ruby with support for several different backends and database adapters.
It also providesfunctionality to ensure that only valid data is stored.
The :archive and :utxo backends can both use any SQL database supported by sequel.
Thebackend stores a complete, fully-indexed blockchain.
This backend produces a very large DB, but holds the data in a completely normalized schema and can be queried arbitrarily.
Postgres is the recommended adapter since it is the most optimized.
Thebackend stores only the utxos (“Unspent TX Outputs”) needed to validate the blockchain on its own.
This backend produces a much smaller DB than the `:archive` backend, but can only be queried for addresses it has been told to watch previously.
Specify which sequel adapter and database to use like this:
sqlite:/ # sqlite in-memory database sqlite://bitcoin.db # sqlite db in current directory sqlite:///tmp/bitcoin.db # sqlite with absolute path postgres:/bitcoin # local postgres database postgres://<user>:<pass>@<host>:<port>/<database> # remote postgres db with authentication
We assume you already have a ruby 1.9 or 2.0 compatible interpreter and rubygems environment.
gem install bitcoin-ruby-blockchain
Or add it to your Gemfile and
Initialize a blockchain with the desired backend and DB adapter:
# use :utxo backend with in-memory sqlite DB chain = ::::Utxo.new(db: "sqlite:/") # use :archive backend with local postgres DB chain = ::::Archive.new(db: "postgres:/bitcoin")
Give it ato store:
chain.store_block(block) #=> [height, branch]
And query objects from the blockchain:
chain.get_head #=> current best block chain.get_height #=> height of current best block block = chain.get_block(block_hash) tx = chain.get_tx(tx_hash)
Seefor a complete list of methods common to all backends.
These returnobjects, which are like objects with extra features to query related data from the blockchain, like so:
block.get_prev_block #=> the previous block this one is based upon block.get_next_block #=> the next block based upon this one tx.get_block #=> the block this tx is in tx.confirmations #=> number of blocks in the main chain that confirm this tx tx.in.get_prev_out #=> the previous output that is spent by this input tx.out.get_next_in #=> the next input that is spending this output
Always trying to improve, any help appreciated! If anything is unclear to you, let us know!
Documentation is generated using yardoc:
The specs are also a good place to see how things are supposed to work.
The specs can be run with
or, if you want to run a single spec
Coverage information is automatically generated and can be found in coverage/ after the test run.
Any help or feedback is greatly appreciated! Just open an issue, submit a pull-request, or come to #bitcoin-ruby on irc.freenode.net if you want to chat.
This software is licensed under the terms of the MIT license. See COPYING for details.