QuantumETH @QCashETH
Experimental testnet · v0.1

A ledger built to outlive the quantum computer. Ordered by a clock no one can rush.

QuantumETH is an Ethereum-themed post-quantum chain: Bitcoin's UTXO ledger, a Solana-style Proof-of-History clock and hash-based signatures. $QETH lives on Solana, paired with WETH.

PoH slot0
Hashes / slot12,500
SignatureW-OTS · 2,144 B
Current PoH—
$QETH
$QETHMain coin · Solana · WETH pair
TBA
Market cap—
Protocol

Three primitives. Nothing else.

Each piece is small enough to read in an afternoon and verified by every node.

01 / LEDGER

UTXO

Coins are discrete outputs, spent whole, as in Bitcoin. Blocks are sealed with SHA-256 proof-of-work.

Block reward
50 QETH
Halving
210,000 blocks
Base unit
10⁻⁸ QETH
02 / ORDERING

Proof-of-History

A sequential SHA-256 chain ticks through every slot and mixes in each transaction. Order is provable and cannot be fast-forwarded.

Ticks per slot
12,500
Empty slots
must tick
Verification
full replay
03 / AUTHORISATION

W-OTS signatures

Every spend is signed with Winternitz one-time keys built only on SHA-256. No elliptic curves to break.

Parameters
n=32, w=16
Key / signature
2,144 B
Key reuse
rejected by consensus
Devnet

A live chain, running in this tab.

Real SHA-256, real Proof-of-History and real W-OTS signing and verification. Only the peer network is simulated.

qeth-devnet · localProducing
Height0
Supply0
Transactions0
Spent keys0
PoH ticks0
Blocks
HeightSlotHashPoHTxs
Transactions
TxAmountAuthStatus
alice · miner0
bob0
Roadmap

Where it goes next.

Research milestones, not promises.

v0.1
Single-node devnet

UTXO ledger, PoH clock, W-OTS spends, wallet CLI, explorer API.

Shipped
v0.2
Peer-to-peer network

Block and transaction gossip with heaviest-chain fork choice.

Research
v0.3
Reusable post-quantum keys

XMSS, SLH-DSA (SPHINCS+) or ML-DSA in place of one-time keys.

Research
v0.4
Leader schedule and retargeting

Per-slot leaders, difficulty adjustment and parallel PoH verification.

Research
!
The chain is an experimental testnet. Devnet QETH you mine with the node or in this page has no value and is separate from the $QETH token on Solana. The QuantumETH software is unaudited and runs as a single-node devnet. Crypto tokens are volatile, so only use what you can afford to lose.