QuFi Launches Post-Quantum Crypto Verification Platform on Bitcoin Testnet

Post-quantum infrastructure company QuFi Network has launched a verification platform that protects digital assets against future quantum computing threats without requiring changes to existing blockchain settlement networks. The platform separates verification from settlement, using a decentralized network of nodes to validate transactions with post-quantum cryptography before they are recorded on existing chains. Alongside the platform, QuFi introduced uBTC, a proof-of-concept applying the verification system to Bitcoin (BTC) and currently operating on Bitcoin Testnet4. uBTC verifies BTC collateral and generates cryptographic proofs governing how value moves between settlement environments, while redemptions ultimately settle as standard Bitcoin transactions.

The platform relies on three post-quantum cryptographic standards — ML-DSA-65, SLH-DSA, and ML-KEM-1024 — for digital signatures and secure key exchange. According to QuFi, the external verification layer is designed to avoid the added storage, bandwidth, and computing demands that come with adopting larger post-quantum signatures directly on individual blockchains. The launch comes amid a wave of quantum-readiness efforts across the industry: in August, StarkWare tested a quantum-resistant Bitcoin transaction on mainnet without requiring a fork, though the process took hours of computation and cost roughly $150 to $200. That same month, banks and regulators across Europe, the Middle East, and Asia joined a pilot testing post-quantum wallets and onchain transfers using ML-DSA-65.

Bitcoin developers are also pursuing protocol-level defenses. Blockstream researchers published a Bitcoin Improvement Proposal for SHRINCS, an experimental post-quantum signature scheme aimed at reducing the size and performance costs of quantum-resistant signatures, though the approach carries trade-offs due to its stateful design. Separately, the Ethereum Foundation dropped the Poseidon hash function from its planned post-quantum architecture in favor of established alternatives such as SHA or BLAKE. Together, these efforts reflect growing coordination across the crypto industry to prepare blockchain networks for a future in which quantum computers could break current cryptographic assumptions.