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New Quantum Defenses Launched for Bitcoin Wallets - U.Today
The race to protect Bitcoin from the next major leap in computing power is now in the "active defense" phase
BitGo, one of the O.G. Bitcoin firms, has now rolled out a suite of quantum-risk management controls for institutional Bitcoin wallets
The new tools are meant to hunt down and purge quantum-related vulnerabilities across UTXO-based wallets
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A compressing timeline
For years, the cryptocurrency ecosystem operated under the comfortable assumption that a quantum computer that could possibly break Bitcoin's foundational elliptic curve cryptography was decades away.
However, a landmark whitepaper published by Google's Quantum AI team revealed that breaking Bitcoin's cryptography could actually require fewer than 500,000 physical qubits (this is a massive 20-fold reduction from the team's 2019 estimate)
Today’s most advanced machines are not even remotely powerful enough, but the progress is quite astonishing
The timeframe for addressing cryptographic vulnerabilities has shortened, according to various analysts (including Citigroup's researchers)
However, no one knows when exactly the so-called "Q-Day" will eventually arrive
Blockstream Co-Founder and CEO Adam Back maintains that an existential quantum threat is still 20 to 40 years out
Notably**,** highly sophisticated adversaries can scrape the public blockchain today to collect exposed public keys ahead of the upcoming "Q-Day."
According to some estimates, roughly 6.9 million BTC currently sits in legacy wallets or reused addresses where the public key has already been exposed on-chain
BitGo CEO and Co-founder Mike Belshe has stressed that "the safest key is one whose public key has never been revealed on-chain."
The firm's new offering makes it possible for institutions to fix exposed wallet addresses
These controls are not a substitute for a network-wide Bitcoin protocol upgrade that is likely to happen in the future, but they provide a necessary stopgap