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QuFi’s post-quantum layer
QuFi Network launched a verification platform designed to protect digital assets against future quantum computing threats without requiring changes to existing blockchain settlement networks.
“QuFi Network has launched a verification platform designed to protect digital assets against future quantum computing threats”
The platform separates verification from settlement, using a decentralized network of nodes to validate transactions with post-quantum cryptography before they are settled on existing blockchain networks.
QuFi also launched uBTC, a proof-of-concept that applies the verification system to Bitcoin (BTC) and is currently operating on Bitcoin Testnet4.
In QuFi’s description, 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 uses three post-quantum cryptographic standards—ML-DSA-65, SLH-DSA and ML-KEM-1024—for digital signatures and secure key exchange.
Standards and integration tradeoffs
QuFi said its external verification layer is intended to avoid the added storage, bandwidth and computing demands that can come with adopting larger post-quantum signatures directly on individual blockchains.
The company’s stated goal, as described in the coverage, is to reduce potential increases in storage, bandwidth, and computation that could come from using larger post-quantum primitives within blockchains.
The launch arrives as other parts of the ecosystem experiment with quantum-resistant techniques, including a Bitcoin signature proposal and institutional pilots using ML-DSA-65.
In August, StarkWare tested a quantum-resistant Bitcoin transaction on mainnet without requiring a fork, but the transaction took hours of computation and cost roughly $150 to $200, and its nonstandard format required direct submission to a miner.
Cointelegraph also pointed to Blockstream researchers publishing a Bitcoin Improvement Proposal for SHRINCS in August, describing it as an experimental post-quantum signature scheme designed to reduce the size and performance costs associated with quantum-resistant signatures.
Broader quantum readiness push
The QuFi launch sits alongside other quantum-readiness efforts, including banks and regulators across Europe, the Middle East and Asia joining a pilot testing post-quantum wallets and onchain transfers using ML-DSA-65.
“banks and regulators across Europe, the Middle East and Asia joined a pilot testing post-quantum wallets”
Meanwhile, the Ethereum Foundation dropped the Poseidon hash function from its planned post-quantum architecture in favor of established alternatives such as SHA or BLAKE.
Blockstream’s SHRINCS proposal, as described in the coverage, uses stateful signatures to reduce their size, requiring wallets to track previously used signing keys.
The same reporting said SHRINCS remains in an early stage without a completed security proof, and its design adds complexity and potential user failure modes.
Against that backdrop, QuFi’s approach emphasizes keeping settlement stable while introducing post-quantum verification elsewhere, with uBTC redemptions designed to complete as standard Bitcoin transactions after cryptographic proofs are produced.