QuantumCash is an open-source chain combining Bitcoin's UTXO ledger, a Solana-style Proof-of-History clock and hash-based post-quantum signatures.
Each piece is small enough to read in an afternoon and verified by every node.
Coins are discrete outputs, spent whole, as in Bitcoin. Blocks are sealed with SHA-256 proof-of-work.
A sequential SHA-256 chain ticks through every slot and mixes in each transaction. Order is provable and cannot be fast-forwarded.
Every spend is signed with Winternitz one-time keys built only on SHA-256. No elliptic curves to break.
Real SHA-256, real Proof-of-History and real W-OTS signing and verification. Only the peer network is simulated.
A single Go binary runs the node, the miner and the wallet. Requires Go 1.24 or newer.
View repository on GitHub →# clone and build $ git clone https://github.com/nostalgicgarethdev/Quantum-Cash $ cd Quantum-Cash && go build -o qcash ./cmd/qcash # create a wallet and start mining $ ./qcash wallet new -w me.json $ ./qcash node -miner $(./qcash wallet address -w me.json)
Research milestones, not promises.
UTXO ledger, PoH clock, W-OTS spends, wallet CLI, explorer API.
Block and transaction gossip with heaviest-chain fork choice.
XMSS, SLH-DSA (SPHINCS+) or ML-DSA in place of one-time keys.
Per-slot leaders, difficulty adjustment and parallel PoH verification.