QuantumHarmony

The first post-quantum Layer 1 blockchain built from genesis.

---

Public Beta Testnet

Live Network: 3 production validators across Montreal, Beauharnois, and Frankfurt

Metric	Value
Test Coverage	600+ unit & integration tests
Pallets	15+ custom runtime modules
Block Time	6 seconds
Consensus	Proof of Coherence (PQ-BFT)
Signatures	SPHINCS+ (NIST PQC Standard)
Status	Pre-audit, seeking security review

---

Why QuantumHarmony?

Existing blockchains face an impossible migration problem. Campbell (2025) demonstrates that post-quantum migration for Bitcoin/Ethereum requires:

• 50% capacity loss during transition
• 3x fee increase for hybrid signatures
• 59x state bloat for backwards compatibility
• Zero immediate user benefit

No rational validator coalition will vote for this.

QuantumHarmony's approach: Post-quantum from genesis. No migration governance, no backwards compatibility debt, no hybrid transition period.

---

Technical Stack

Cryptography

Layer	Algorithm	Security Level
Signatures	SPHINCS+-SHAKE-256s	256-bit post-quantum
P2P Identity	Falcon-1024	256-bit post-quantum
Key Exchange	ML-KEM-1024 (Kyber)	256-bit post-quantum
Hashing	Keccak-256 (SHA-3)	128-bit post-quantum
Encryption	AES-256-GCM	128-bit post-quantum

Consensus

• Proof of Coherence: BFT finality with Falcon-1024 signatures
• Leader Rotation: VRF-based quantum entropy selection
• Finality: Deterministic 2/3 supermajority (no GRANDPA/BLS)

Scalability

• 512-segment toroidal mesh: 8x8x8 parallel transaction processing
• Target: 10,000+ TPS with SPHINCS+ signatures

---

Runtime Modules (Pallets)

Financial Infrastructure

Pallet	Tests	Description
pallet-stablecoin	16	QCAD collateralized stablecoin with liquidation
pallet-fideicommis	20	Quebec-style trusts (constituant/fiduciary/beneficiary)
pallet-validator-rewards	30	Staking, slashing, reward distribution
pallet-pedersen-commitment	22	Cryptographic commitments for privacy

Legal/Notarial

Pallet	Tests	Description
pallet-ricardian-contracts	34	Human+machine readable legal contracts
pallet-notarial	31	Document attestation and certification
pallet-academic-vouch	35	Academic credential verification

Core Infrastructure

Pallet	Tests	Description
pallet-sphincs-keystore	25	SPHINCS+ key management
pallet-runtime-segmentation	43	Toroidal mesh parallelization
pallet-relay-coordination	13	QKD relay network management
pallet-validator-entropy	9	Quantum entropy distribution

Node Components

Component	Tests	Description
Coherence Gadget	25+	PQ-BFT finality engine
Quantum P2P	50+	Falcon/Kyber secured networking
Triple Ratchet	15+	Forward-secret key rotation
Threshold QRNG	10+	Distributed quantum randomness

---

Quick Start

Run a Node (Docker)

docker pull sylvaincormier/quantumharmony-node:latest
docker-compose up -d

Build from Source

git clone https://github.com/Paraxiom/quantumharmony.git
cd quantumharmony
cargo build --release
./target/release/quantumharmony-node --chain=production --name="MyNode"

Run Tests

cargo test --workspace
# 600+ tests across all pallets and node components

---

Dependencies

QuantumHarmony requires forked Substrate dependencies with PQC modifications:

Repository	Purpose
Paraxiom/polkadot-sdk	SPHINCS+ signatures, Falcon consensus, quantum entropy
Paraxiom/parity-scale-codec	Increased preallocation for PQC signature sizes

---

Documentation

• LIGHTPAPER - Technical overview and architecture
• SECURITY.md - Security policy and vulnerability reporting
• TESTNET_ONBOARDING - Join the testnet
• RUNTIME_UPGRADE_GUIDE - Forkless upgrades

---

Research Publications

Paper	Topic	DOI
Proof of Coherence	QKD-based distributed consensus	10.5281/zenodo.17929054
Toroidal Mesh	10K TPS with SPHINCS+	10.5281/zenodo.17931222
ERLHS	Hamiltonian coherence framework	10.5281/zenodo.17928909
Karmonic Mesh	O(N log N) spectral consensus	10.5281/zenodo.17928991

---

Status

Current Phase: Public Beta Testnet

• Core runtime with SPHINCS+ signatures
• 3 production validators (geographically distributed)
• 600+ passing tests
• Docker deployment for node operators
• Quantum P2P with Falcon-1024/ML-KEM-1024
• Security audit (seeking auditors)
• Mainnet launch

---

License

Apache-2.0

Contact

QuantumVerse Protocols

• GitHub: Paraxiom/quantumharmony
• Security: security@quantumverseprotocols.com