ビットコイン、イーサリアム、XRP、そして量子コンピューティングの未来：どのネットワークが適応できるのか？?

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The quantum computing threat to Crypto assets has been a topic for discussion lately. As research accelerates, analysts are evaluating whether blockchain encryption could eventually be broken by powerful quantum machines. The real question may not be which network is secure today, but which one can adapt fast enough if quantum computers break modern encryption.

Now the question is who will lead the race?

According to information shared by Versan Aljarrah, no blockchain today is fully protected from this threat. Major networks like Bitcoin, Ethereum, and XRP all rely on elliptic curve cryptography (ECC) to secure digital assets.

In simple terms, this system hides private keys while allowing public keys to be visible on the blockchain. But quantum computers running advanced algorithms could theoretically reverse-engineer those keys.

If that happens, the consequences could stretch beyond crypto. Global banking networks, military encryption, SWIFT systems, and large portions of the internet also rely on similar cryptographic foundations.

6.89 Million BTC Potentially at Risk

The concern gained further attention after Ki Young Ju warned that around 6.89 million BTC may eventually be exposed to quantum threats.

His analysis suggests 1.91 million BTC are stored in early P2PK addresses where public keys are permanently visible. Another 4.98 million BTC may have exposed keys due to previous transactions.

Ju also noted that roughly 3.4 million BTC have remained dormant for more than a decade, including about 1 million BTC linked to Satoshi Nakamoto.

“Coins that appear perfectly safe today could become spendable by an attacker tomorrow,” he warned.

Bitcoin and Ethereum: Strong but Slow to Upgrade

Both Bitcoin and Ethereum remain among the most secure networks in crypto. However, their decentralized governance makes upgrades slower and politically complex.

Switching to quantum-resistant cryptography would likely require major protocol changes and broad community agreement. Past debates, like Bitcoin’s block size war, show how difficult reaching consensus can be.

As Ju explained, the biggest bottleneck may not be technology but social consensus.

XRP’s Adaptability Argument

According to Aljarrah, the XRP Ledger was designed with greater protocol-level flexibility.

Unlike more rigid systems, its validator-based governance could allow cryptographic upgrades through consensus without halting the network.

That does not make XRP quantum-proof today. But proponents argue its architecture may allow faster adaptation if quantum computing ever threatens existing encryption.

As the technology evolves, the future of blockchain security may ultimately depend on which networks can evolve quickly enough to meet the challenge.

FAQs

Can quantum computers break Bitcoin encryption?
Yes, in theory. Bitcoin uses elliptic curve cryptography, which powerful quantum computers running advanced algorithms could potentially reverse-engineer to steal private keys.

Why is quantum computing considered a threat to blockchain security?
Quantum machines could reverse-engineer private keys from public keys, which might allow attackers to access crypto wallets if networks fail to upgrade encryption.

What happens to crypto if quantum computing succeeds?
If quantum computers break current encryption, private keys could be derived from public keys. This would allow attackers to steal funds and potentially compromise global banking and military systems.
source: https://www.tradingview.com/news/coinpedia:fd0d5e5cf094b:0-bitcoin-ethereum-xrp-and-the-quantum-future-which-network-can-adapt/