The Quantum Computing Threat of Bitcoin Article: Bitcoin Magazine Pro Compilation: The vernacular blockchain Bitcoin is facing its first real threat to survival, not from government bans or market crashes, but from quantum computing. The 1.1 million bitcoins (worth approximately $100 billion) stored in Satoshi Nakamoto's wallet, as well as approximately 25% of the total circulating bitcoins, are currently exposed to outdated encryption keys that are highly vulnerable to quantum attacks. When quantum computers mature - whether in 5 or 25 years - these bitcoins will be cracked. The security of Bitcoin, where the threat lies, relies on the elliptic curve digital signature algorithm (ECDSA). These algorithms make it extremely difficult to forge Bitcoin signatures through mathematical means without knowing the private key. For traditional computers, cracking this signature takes millions of years. However, the operation of quantum computers is completely different, and they have the potential to solve the discrete logarithm problem behind ECDSA in minutes or hours. Figure 1: Satoshi Nakamoto's wallet holds nearly 1.1 million bitcoins. Not all bitcoins face the same risks. The public key of early point-to-point K (public key payment) addresses (including Satoshi Nakamoto's address) was directly displayed on the ledger. For these bitcoins, quantum computers are like a "master key" that can be directly entered into a wallet. In contrast, later address types (such as peer-to-peer KH) hide the public key behind the encrypted hash and only expose it when initiating a transaction. This creates a brief loophole window: between you revealing the public key for transferring money and the transaction being packaged and confirmed by miners, theoretically powerful quantum computers can intercept it during this period. The timeline of quantum computing is highly uncertain. It may arrive within a year, or it may never be realized. But uncertainty is the enemy, because what Bitcoin needs is active migration, not passive adaptation. If quantum computers emerge and Bitcoin has not yet migrated to post quantum cryptography (PQC), Bitcoin will suffer a complete defeat. Billions of dollars worth of public keys will be exposed, allowing attackers to start stealing Bitcoin and selling it to the market, leading to a devastating price collapse. Figure 2: Comparison of Long term Exposed Attack Vulnerabilities for Different Bitcoin Address Types. The timeline for implementing the PQC solution would ideally take 6 to 12 months to finalize the code and reach consensus; Depending on the degree of signature optimization, the migration process may require an additional 6 months to 2 years. The issue of coin burning is whether a deadline should be set to 'destroy' those bitcoins that have not been migrated to quantum resistant addresses before the deadline. If about 20-30% of the supply is simultaneously unlocked (breached), Bitcoin will face a huge crisis of trust, and its argument for a 'hard currency' will collapse. This scale of supply sell-off will create bear market conditions and may jeopardize the entire philosophy of Bitcoin. Figure 3: Bitcoin circulation supply. However, the destruction of tokens faces significant philosophical obstacles. This actually means that Bitcoin can become confiscated property. If the internet decides that it can redeem itself by destroying tokens, what can prevent governments or controllers from deciding which addresses (such as assets of terrorists or dissidents) can be destroyed and censored? This will set a precedent and destroy the ownership of assets by sovereign individuals. The primary target Bitcoin is the world's largest 'honeypot'. It is the only financial network where you can directly steal value and have 24/7 liquidity for cashing out. The US dollar cannot achieve this - stealing huge amounts of funds can result in blocked transfers, and even if hacked, institutions will refund customers. Bitcoin does not have this luxury, it is purely built on trust in code. Figure 4: The number of addresses with balances exceeding 10000 BTC is significant. If someone realizes the quantum computing capability to crack encryption, Bitcoin wallets will become the preferred target because they are easier to monetize and have a first mover advantage. If the money has already been taken by the first cracker, the second cracker will get nothing. Although this survival level vulnerability has long been recognized in cryptographic literature, the window for preventive action is narrowing, requiring miners, trading platforms, wallet providers, and individual stakeholders to immediately give strategic attention. The real test is not whether the threat exists, but whether the network can coordinate and systematically migrate to anti quantum signature algorithms before quantum computers with sufficient computing power emerge.