[ About ]

Building the Post-Quantum Future

Meet the team behind Quantum — engineers and researchers securing the next era of blockchain.

Urgency

Why post-quantum now

Most blockchains rely on classical signatures (ECDSA / EdDSA / Schnorr) for transaction authorization and validator voting. Those signatures are vulnerable to sufficiently capable quantum computers via Shor's algorithm.

NIST's first finalized post-quantum cryptography standards (FIPS 203/204/205) were approved and published in August 2024, and the "which algorithms?" question is converging fast enough that systems engineering is worth doing now — not later.

Architecture

What we're building

Quantum is built around PQ authorization + PQ scaling, and how that boundary is enforced across the base chain, bridges, wallets, and future settlement layers.

01

PQ-by-default authorization

PQ signatures aren't a plugin; they become the default account authorization mechanism.

02

Consensus for PQ payloads

PQ signature and certificate bytes are treated as a first-class protocol constraint.

03

Cryptographic agility

We plan for algorithm surprises with clear normal → hedged → emergency modes.

04

Minimalist architecture

We avoid adding complexity unless benchmarks prove it's required.

05

PQ safety for the broader EVM ecosystem

Even before chains migrate at L1, we can materially improve asset custody by enabling PQ-secured smart wallets and tooling that can produce PQ signatures in real workflows.

Shipping First

PQ Wallet Layer (Multichain)

Quantum's L1 target end state is PQ-by-default. But we can deliver meaningful benefits to users before the rest of the ecosystem migrates by improving wallet-layer custody on existing EVM chains.

Key idea

Even on chains where consensus and base accounts still use ECDSA, assets can be protected inside a smart wallet that only accepts PQ signatures — so even if a user's ECDSA key is compromised, the attacker cannot move assets held in a PQ-only smart wallet.

1

MetaMask Snap for PQ signing

in progress

2

Verifier contract deployments

in progress

3

PQ-secured smart wallet

4

Local PQ signing tool (CLI) + Foundry/Hardhat enablement

5

More wallet support + native Quantum wallet

Bridge

Entanglement: Quantum ↔ EVM Bridge

Quantum needs a bridge that preserves a clear boundary:

Nothing mints/unlocks on Quantum unless there is post-quantum (PQ) authorization.

Defense Layer 1

PQ-DVN required

Uses LayerZero v2 as transport and a DVN-based verification stack. PQ-DVN is required for EVM → Quantum verification.

Defense Layer 2

Pending credit → PQ claim() gate

Quantum-side pending credit requires a PQ-authorized claim() call before assets unlock.

Planned Post-Mainnet

QCN: Quantum Circuit Network

QCN is a protocol and marketplace for running structured quantum circuit jobs on real QPUs, with off-chain execution and on-chain settlement on Quantum.

Planned post-mainnet

Core Team

Architects of the Post-Quantum Future

Quantum is built by MultiVM Labs, a remote-first R&D lab focused on post-quantum blockchain engineering. We build long-horizon infrastructure: post-quantum security, fast finality, and future distributed quantum execution.

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