QuFi releases anti-quantum verification solution for Bitcoin Test Network

QuFi Network launches post-quantum verification platform to protect digital assets from future quantum computing threats

QuFi Network announced the launch of a post-quantum verification platform to protect digital assets from future quantum computing threats without having to force an immediate upgrade of the existing blockchain settlement layer. The core idea is to add a separate verification step that can use post-quantum cryptography, while the underlying network continues to process transaction settlement in its current form.

At the same time, QuFi launched uBTC, a proof-of-concept project that applies the above verification method to Bitcoin. According to QuFi, uBTC runs on Bitcoin Testnet and is responsible for verifying BTC collateral and generating cryptographic certificates that control the flow of value between settlement environments. The final redemption will be settled in a standard Bitcoin transaction.

Key Points

• QuFi's platform separates transaction verification from on-chain settlement and uses a dedicated node network for post-quantum inspection.
• The uBTC proof-of-concept applies a verification layer to the Bitcoin Test Network while maintaining compatibility between final redemption and normal Bitcoin transaction settlement.
• QuFi reported using three post-quantum cryptography standards-ML-DSA-65, SLH-DSA and ML-KEM-1024-for signature and key exchanges.
• This announcement adds to the ecosystem's broader efforts to address quantum risk, which are aimed at avoiding immediate hard forks or web-wide rewrites.

Verification layer construction to avoid chain migration

According to QuFi, the platform is designed to reduce some of the practical friction that may arise when adopting post-quantum cryptography directly at the blockchain protocol level. QuFi made it clear that the motivation is that larger post-quantum signatures and related cryptographic operations would increase storage, bandwidth and computing requirements if deployed within a single blockchain.

QuFi said that instead of changing how the base-layer settlement network verifies transactions, it would be better to "separate verification and settlement." The company describes a decentralized collection of verification nodes that use post-quantum cryptography to verify transactions before settling them using existing blockchain networks. For users and integrators, the practical significance is that post-quantum protection can be introduced as an additional infrastructure component rather than as a sudden protocol overhaul.

QuFi also positions the platform as a concrete cryptography toolbox: using ML-DSA-65 and SLH-DSA for digital signatures, and using ML-KEM-1024 for secure key exchange. The use of multiple standards suggests that QuFi aims to flexibly handle authentication and key establishment methods in different processes, although the announcement does not detail the performance and operational trade-offs for each element.

uBTC: Post-quantum inspection for Bitcoin collateral (test environment)

QuFi's uBTC system is a proof-of-concept project that applies verification methods to the asset layer of Bitcoin. The design described is relatively specific: uBTC verifies BTC collateral and generates a cryptographic proof that defines how value moves between settlement environments. QuFi said redemptions will ultimately be settled in the form of standard Bitcoin transactions.

Due to running on Bitcoin Testnet 4, the current work is still in the testing stage rather than real-time production settlement. For investors and developers, the key reason to focus on such designs is their goal compatibility-by generating proof for the move rules, rather than requiring Bitcoin itself to immediately adopt a new post-quantum signature scheme. However, actual results will depend on how the attestation system behaves under true loads, the governance and security status of the attestation nodes, and whether the attestation workflow provides sufficient robustness for daily wallet and custody operations.

Quantum defense measures are spreading-sometimes with obvious trade-offs.

QuFi's announcement comes amid an industry-wide effort to strengthen blockchain against the threats of the quantum age. Recent efforts show a pattern: Many teams try to prepare without forcing disruptive upgrades, but each approach comes with costs.

Earlier this year, StarkWare tested a quantum-resistant Bitcoin transaction on the main web that did not require forking. The experiment reportedly ran for several hours, cost about $150 to $200, and produced non-standard transaction formats that required submission directly to miners. This experience illustrates one of the practical obstacles to the immediate adoption of post-quantum technology at the clearing level: Even if the solution works, it can be expensive and inconvenient to operate.

In the same month, a pilot project involving banks and regulators in Europe, the Middle East and Asia tested post-quantum wallets and on-chain transfers using ML-DSA-65, one of the cryptographic options listed by QuFi. At the same time, the Ethereum Foundation has reportedly removed the Poseidon hash function from its planned post-quantum architecture and switched to mature alternatives such as SHA or BLAKE. Together, these initiatives emphasize that "quantum-ready" search is not just about adding new cryptography, but also about selecting components that are mature, implementable, and secure under real-world engineering constraints.

Bitcoin developers are also exploring protocol-level mechanisms. Previously reported on Blockstream researchers 'work around the Bitcoin Improvement Proposal (BIP) SHRINCS, an experimental post-quantum signature scheme designed to reduce the size and performance costs of anti-quantum signatures. The same report highlighted an important trade-off: SHRINCS uses stateful signatures to keep signatures small, which requires wallets to track previously used signature keys. In addition, it is still in its early stages, lacks complete safety certification, and introduces complexity that can lead to user failure modes.

Why QuFi's approach matters-and what to focus on next

The main difference in QuFi's promotion is architecture. By placing post-quantum verification on the external layer and binding settlement to existing blockchain networks, QuFi aims to avoid the immediate overhead and interoperability that arise when the chain is forced to adopt larger post-quantum primitives at one time. Sexual friction.

That being said, the introduction of a verification layer also raises a series of issues that the market may evaluate over time: the degree of decentralization and credibility of the verification network, end-to-end certificate generation and verification methods, and whether the operational requirements for key management and escrow remain controllable. For bitcoin-related use cases, of particular note is how uBTC's testnet results translate into a true wallet and exchange integration model-especially if the goal is to support production-level redemption without requiring non-standard transaction formats or special miner submission paths.

Readers should pay close attention to updates on the Beyond Testnet demonstration-especially performance metrics, verifying the network's security assumptions, and any clear information on how this approach interoperates with a wider range of hosting, compliance and wallet tools as quantum transition plans accelerate within the ecosystem.