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Async blockchain nodes interacting tool with ORM-like api.

Project description


Async blockchain nodes interacting tool with ORM-like API
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PyPI version Build Status Code style: black


There are a lot of cryprocurrencies and many of them maintain their own blockchain. Essentially, blockchain is a database, therefore you can interact with it in the same way as with the ordinary database. If you follow how the database interacting tools evolved, you can see that at low-level there are database adapters (such as psycopg2, pymongo, etc.) on top of which are built more abstract and convenient ORMs/ODMs (sqlalchemy, mongo-engine, etc.) Blockchain technology, that is still in its infancy, really lacks similar tools for developers. The goal of this project is to become such a tool. It provides both low-level adapters and high-level ORM-like API for interacting with blockchain node. Also, it's worth clarifying, that ordinary databases have already reached stable APIs unlike blockchain nodes that just provide scattered JSON RPC or/and other non-standard API. OBM is trying to do typically things in universal way. Thereby standardization and unification become the second project goal.


pip install obm



  • BTC (bitcoin-core) and ETH (geth) support
  • Implemented :bash:list-transactions for ETH
  • Unified API for sending/receiving transactions, addresses creation and fee estimating

In future

  • support of: ETH, ETC, DASH, BCH, LTC, ZEC, XEM, XRP, etc.

Is OBM production ready?

The project is now under active development. Use at your own risk and lock dependency version on minore.


See for instructions.

Support the developer


Special thanks for Swapzilla project that paid me part of the development.


You can also become the sponsor and get priority development of the features you require. Just contact me.

Buy me a beer

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