Why are crypto companies building quantum-proof wallets?

Crypto firms are preparing for a future where quantum computers could potentially break today’s encryption systems used by Bitcoin and Ethereum wallets. Companies are trying to upgrade wallet security now because changing blockchain networks themselves could take years.

What is the “Q-Day” threat in crypto?

“Q-Day” refers to the theoretical point when quantum computers become powerful enough to crack existing cryptographic systems protecting digital assets. Some researchers believe this threat could emerge as early as 2030, although fully capable quantum computers do not exist yet.

Why are Bitcoin and Ethereum vulnerable to quantum computing?

Bitcoin and Ethereum currently rely on elliptic-curve cryptography, which secures wallet private keys and transactions. Experts believe sufficiently advanced quantum computers could eventually break this encryption much faster than traditional computers.

What is a quantum-resistant crypto wallet?

A quantum-resistant wallet uses newer cryptographic algorithms designed to withstand attacks from future quantum computers. These wallets aim to protect private keys and transaction signing even if current encryption methods become obsolete.

What is MPC and why is it important for crypto security?

Multi-party computation (MPC) splits private keys across multiple devices or systems instead of storing them in one place. This reduces the risk of a single point of failure and is already widely used by custodians and institutional crypto platforms.

How is Silence Laboratories trying to protect crypto wallets?

Silence Laboratories said it upgraded its MPC wallet infrastructure using post-quantum cryptographic algorithms selected by the US National Institute of Standards and Technology. The company claims institutions can adopt the upgrade without rebuilding existing systems.

Why are crypto firms focusing on wallets instead of blockchains first?

Wallet upgrades can often be deployed faster than changing the core rules of blockchain networks like Bitcoin or Ethereum. Developers believe protecting user-facing infrastructure early may help reduce risk while broader protocol upgrades remain debated.

Crypto firms build quantum-proof wallet upgrades

Q: What are SPHINCS+, Falcon and CRYSTALS-Dilithium?

SPHINCS+, Falcon and CRYSTALS-Dilithium are post-quantum cryptographic algorithms approved by the US National Institute of Standards and Technology. These algorithms are specifically designed to resist attacks from future quantum computers.

Written by Isaac FrancisPublished May. 11 2026

Crypto companies are accelerating efforts to build quantum-resistant wallets and custody systems as concerns grow that future quantum computers could eventually break the cryptography securing digital assets.

The push reflects fears that blockchains such as Bitcoin and Ethereum may take years to implement network-wide cryptographic upgrades, leaving user-facing wallets exposed in the meantime.

Silence Laboratories said it added support for distributed multi-party computation signatures using ML-DSA, a post-quantum cryptographic algorithm selected by the US National Institute of Standards and Technology.

“Any bank or custodian with existing MPC infrastructure can now migrate to a post-quantum MPC-based wallet, without changing their infrastructure,”

Said Silence Laboratories chief executive, Jay Prakash.

Prakash said the company evaluated NIST-approved post-quantum algorithms including SPHINCS+, Falcon and CRYSTALS-Dilithium to determine whether they could efficiently support distributed signing systems already used by custodians and institutional wallets.

Other developers are pursuing different approaches, including layer-2 overlays that add quantum-resistant signatures to Bitcoin without changing the underlying blockchain protocol, although some researchers described those systems as costly last-resort solutions.

Industry participants warned that wallet upgrades alone may not fully solve the problem because blockchain networks themselves still rely on existing elliptic-curve cryptography, meaning broad coordination across wallets, custodians and blockchain developers may eventually become unavoidable.

At the time of reporting, Bitcoin price was $81,524.58.