Skip to content


Repository files navigation

MIT licensed PyPI version CircleCI CircleCI Codacy Badge codebeat badge Snyk Vulnerability Analysis

QRL - Quantum Resistant Ledger

Python-based blockchain ledger utilizing hash-based one-time merkle tree signature scheme (XMSS) instead of ECDSA. Proof-of-work block selection via the cryptonight algorithm. Future transition to POS with signed iterative hash chain reveal scheme which is both probabilistic and random (

Hash-based signatures means larger transactions (3kb per tx, binary), longer keypair generation times and the need to record 'state' of transactions as each keypair can only be used once safely. Merkle tree usage enables a single address to be used for signing numerous transactions (up to 2^13 computationally easily enough). Currently XMSS/W-OTS+ are natively supported with extensible support for further cryptographic schemes inbuilt.


We recommend exploring our Documentation

For instructions on how to install a node, please refer to Install Node

API documentation can be found at

More information