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The post-quantum transition can’t be postponed any longer

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Physical Quibits required for Shor's algorithm

A whitepaper published yesterday by Google Quantum AI shows that a fast-clock quantum computer (with similar architecture to their existing Willow chip) could derive a private key from an exposed public key in approximately nine minutes. Bitcoin settles a block every 10 minutes.

That is, on average, a one-minute margin between the system working and an adversary hijacking live transactions directly from the mempool before they confirm. That multi-trillion dollar minute means that not just Satoshi’s coins, but the entire supply of Bitcoin now and forever is at risk.

For years, the industry’s position on quantum has been some version of “we’ll deal with it when it’s real.” Even for those who took this threat seriously, most believed that the first real threat to Bitcoin was at least a decade away, and would come in the form of “long-range” attacks on dormant assets. This paper, the latest in a string of accelerating breakthroughs make that position untenable.

This research presents a seismic shift that violently accelerates the timeline. The implications for the digital asset ecosystem are acute. If we do not coordinate an urgent upgrade effort immediately, digital assets as we know them may not be viable.

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The pace of change is accelerating

Historically, estimates suggested we would need tens of millions of physical qubits running a trillion error-corrected operations to threaten Bitcoin. But critically, those estimates were based not on the elliptic-curve cryptography Bitcoin uses, but on an older algorithm known as RSA-2048.

Google’s whitepaper shatters those prior resource estimates with an architecture for breaking the 256-bit Elliptic Curve Discrete Logarithm Problem (ECDLP) used in Bitcoin specifically.

This paper brings the physical requirement down to fewer than half a million qubits and reduces the number of operations by multiple orders of magnitude. It achieves this using just 1,200 logical qubits at an error rate of 0.1%, a threshold that appears achievable in the near-term. Google has reportedly moved up its own quantum timelines to 2029.

More importantly, the architecture it used (superconducting) featured fast physical clock speeds. That means it isn’t just “lost” or dormant coins that are at risk; every single active Bitcoin transaction could be vulnerable to a quantum attacker snatching it directly from the mempool.

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But the Google paper is not an isolated event. It is one of two converging breakthroughs.

Researchers from Oratomic announced a parallel breakthrough using neutral-atom hardware. Leveraging high-rate quantum low-density parity check (qLDPC) codes, they demonstrated that Shor’s algorithm can be executed at cryptographically relevant scales using approximately 10,000 to 22,000 reconfigurable atomic qubits. What once required millions of qubits has been compressed by orders of magnitude in just a few short years on two separate technological tracks, simultaneously.

Physical Quibits required for Shor's algorithm

Multiple tech trees with one target

How is it possible that quantum made little progress for so long, but we are now witnessing the timeline collapse so quickly? Simply put, small iterative improvements in physical fidelity, error correction, control architectures, and algorithm design are creating a feedback loop that compounds progress.

Faster machines enable better error-correction research, lowering the resource bar for the next generation of machines and accelerating timelines at non-linear speeds.

Perhaps the most dangerous misconception is that quantum progress relies on a single “miracle” breakthrough in one specific type of physics. The quantum threat is not a single moonshot that might stall. Superconducting, photonic, neutral-atom and ion-trap architectures represent entirely different engineering roadmaps, physics and funding pipelines. Only one needs to succeed for quantum computing to become cryptographically relevant.

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It’s true that none of these systems has been fully proven at scale yet. But they are increasingly being proven, with serious names and serious capital behind them. Are we really willing to roll the dice with trillions of dollars on the line?

The clock is ticking on migration

The instinct to defer until a cryptographically relevant quantum computer is publicly confirmed fundamentally misunderstands how decentralized networks upgrade. Migrating a decentralized network like Bitcoin is not like flipping a switch on an enterprise server. Trillions of dollars of assets are at risk, and all networks need to perform an unprecedented upgrade to introduce new cryptography at the most foundational level.

Unfortunately, solving one problem creates new challenges. Post-Quantum Cryptography (PQC) requires significantly larger digital signatures, thereby increasing bandwidth, storage and compute requirements. Implementing this requires a hard fork, and reaching the necessary community consensus will be an arduous, politically fraught process.

Even after a consensus is reached, the sheer logistics of moving the assets are staggering. At bitcoin’s current transaction rate, migrating the network to post-quantum addresses would take several months – assuming the network processed nothing else and every block was full.

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If we wait until Q-Day (when a quantum computer relevant to cryptography is publicly confirmed) to begin this process, it will be too late. Digital signatures will have already lost their authority, and any attempt to fix the problem retroactively will spark intense financial volatility. In a worst-case scenario, there may be competing forks, shattered institutional trust and a crisis of provenance for trillions of dollars in assets.

Urgency, not panic

This is not a call for panic. It is a call for realism. Executives and institutions that now hold a massive portion of the circulating bitcoin supply, stablecoin issuers and major protocol teams need to acknowledge that the risk profile has fundamentally changed. The quantum threat is no longer a theoretical exercise for academics; it is an engineering reality moving at breakneck speed.

We must act now. The world needs proactive migration strategies, tools to register post-quantum ownership, and an industry-wide mandate to upgrade before the first silent theft occurs. The quantum adversary is coming, and they will not declare themselves. But we can prepare. We must coordinate this upgrade today to ensure the foundation of digital trust survives into the quantum era.

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Crypto World

South Korea Details AI System for Crypto Tax Monitoring

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South Korea Details AI System for Crypto Tax Monitoring

South Korea’s National Tax Service (NTS) has opened a tender for software licenses to track virtual asset transactions as part of tax evasion enforcement, according to a government procurement notice.

The notice said the contract is for “virtual asset tax evasion response transaction-tracking software licenses,” with a budget of 146.5 million won (around $99,500), including value-added tax and delivery due within 30 days of contract signing. Bid submissions are scheduled for April 28 to April 30, with proposal evaluation set for May 7.

The procurement notice itself gives limited detail on the software’s technical scope. However, citing an official from the NTS scientific investigation unit, local outlet ZDNet Korea reported that the software would allow officials to monitor crypto transactions in real time, visualize transfers between specific wallet addresses and exchanges, and support probes into hidden assets, offshore tax evasion and unreported inheritance or gift transfers.

The tender follows earlier local reporting that South Korea was preparing a broader AI-based crypto monitoring system ahead of the country’s planned 2027 tax rollout.

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South Korea expands enforcement capabilities ahead of crypto tax rollout

The tax agency’s push for a crypto monitoring tool appears to be part of a broader effort to expand enforcement capabilities as the country prepares for an upcoming rollout of a crypto tax. 

On March 12, local media The Korea Times reported that the NTS opened a bid for an AI-backed system to analyze crypto transaction data. The agency reportedly aims to establish a platform that can process large volumes of crypto trading data to monitor potential tax evasion.

Related: Bank of Korea governor backs CBDCs, deposit tokens in first address

South Korea’s crypto tax rollout is currently expected to take effect in January 2027 after several delays. Under the policy, gains above 2.5 million won (about $1,700) would be subject to a combined 22% levy, made up of a 20% income tax and an additional 2% local tax.

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The tax rollout remains politically contested. On March 19, South Korea’s main opposition People Power Party proposed scrapping the planned tax on crypto gains, arguing the policy raises fairness, double-taxation and enforcement concerns.

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