Quantos Overview

Quantos is a post-quantum Layer 1 DAG blockchain featuring zero-gas execution via STACC and a Layer 0 finality hub that anchors external chains with PQC proofs.

Vision​

Current blockchain infrastructure relies on ECDSA and secp256k1, cryptosystems that will be rendered insecure by Shor's algorithm on a sufficiently powerful quantum computer. Quantos is designed quantum-first: every consensus message, every transaction signature, and every cross-chain proof uses NIST-standardized post-quantum cryptography from day one.

Quantos does not merely add PQC as an afterthought. It re-architects consensus, execution, and interoperability around the constraints and capabilities of post-quantum algorithms.

Architecture​

3-Layer QuantumDAG Consensus​

Layer 3: Finality Anchor
  Falcon-512 checkpoints, deterministic finality, ~1 second

Layer 2: Quantum Committees
  1,000 committees x 21 validators = 21,000 total
  VRF rotation (SPHINCS+) every 100ms
  Dilithium-3 aggregated signatures (14/21 threshold)

Layer 1: Fast Path (DAG)
  Parallel transaction inclusion, no sequential blocks
  2-8 parent references per vertex
  Optimistic execution with <0.1% rollback rate

Post-Quantum Cryptography​

Adaptive PQC Algorithm Selection (APAS) dynamically selects the optimal algorithm per context.

STACC: Zero-Gas Execution​

STACC (Stake-Timed Access & Compute Credit) replaces per-transaction gas fees with a renewable, stake-proportional bandwidth quota.

How it works:

1. Activation: Users stake native tokens and activate their address (minimum stake required)
2. Quota Allocation: Compute Units (CU) are allocated via a dual token-bucket mechanism
3. Fair Scheduling: Weighted Fair Queueing (WFQ) orders transactions by stake, anciennete (loyalty), and priority boosts
4. No Fees: Transactions consume quota, not tokens. Quota refills continuously.

Tier System:

Long-term participants receive a logarithmic quota multiplier (1.0x to 3.0x) that grows over ~6 months of continuous activation, rewarding network loyalty without capital requirements.

Dynamic Sharding​

• 100 to 10,000 shards auto-scale based on load
• Split threshold: 150,000 TPS per shard
• Cross-shard: Two-phase commit with zk-STARK batched verification (~150 KB proof for 1,000 transitions)
• Intra-shard throughput: ~20,000 TPS

QuantosVM​

• Engine: Wasmer WASM with AES-256-GCM bytecode protection
• EVM Compatible: revm integration for Solidity contracts
• Solang: Native Solidity to WASM compiler
• Host functions: qnt_storage_*, qnt_block_*, qnt_crypto_*

Layer 0 Finality Hub​

Quantos acts as a post-quantum finality layer for external blockchains. It produces L0FinalityProof artifacts — cryptographically self-contained attestations signed with Falcon-512 (PQC) that any chain can verify without trusting Quantos nodes.

What it does in one sentence

Ethereum, Bitcoin, Solana and others finalize with classical signatures (ECDSA, Ed25519) that Shor's algorithm will break. Quantos wraps their blocks with a quantum-resistant attestation that remains unforgeable even if the source chain's own cryptography collapses.

Three concrete use cases

How it works (5 steps)

1. Relayer monitors a chain and fetches the cryptographic proof (block header, ledger entry, signatures)
2. Relayer submits ExternalCheckpoint + structured ChainProof to Quantos L0
3. Light Client Registry verifies the proof cryptographically — no RPC calls to source chains
4. Quantos validators produce L0FinalityProof signed with Falcon-512
5. Proof is relayed to any chain for on-chain verification

Supported chains

Production = cryptographic verification is complete: proof structure + signatures verified.
Planned = light client framework ready, awaiting chain-specific proof format implementation.

Sovereign Subnets with L0 anchoring

Projects can deploy isolated subnets on Quantos with custom validators, STACC collateral leasing, shared economic security via double-staking, and cross-chain anchoring to the L0 hub — enabling PQC interoperability without building custom bridge infrastructure.

Target Clients & Industries​

Quantos serves a wide range of sectors requiring high-throughput, quantum-resistant infrastructure:

Ecosystem: Vybss​

The flagship super app combining:

• DEX: Spot and perpetual trading with PQC settlement
• SQTEST Stablecoin: Self-collateralized stablecoin with native token collateral, stability fees and liquidation
• Bridge: Quantos-Base cross-chain bridge with point rewards
• Social Feed: Creator economy with monetized content, subscriptions, and leaderboards
• Kai AI: AI-powered code security, app builder, and crypto assistant
• Stories/Videos: Short-form content with creator monetization

Technical Specifications​

Links: quantos.tech · GitHub