Talks about quantum computing are increasingly sparking fears that Bitcoin, the world’s oldest and largest cryptocurrency, could be on the brink of collapse, with some claims suggesting that future quantum computers could break its cryptography within minutes.
Meanwhile, an XRPL validator known online as Vet has released a detailed audit examining the network’s potential vulnerabilities. His conclusion is clear: the current architecture of the XRP Ledger positions it as one of the most secure blockchain ecosystems available today.
How 2.4 Billion XRP Are Protected From Quantum Computing Threats
For those unfamiliar, when you send Bitcoin, your wallet uses a private key—a secret number—to sign the transaction and prove that you own the coins. That signature also exposes your public key, a shareable address that is broadcast to the network and remains in a holding area known as the mempool until a miner includes it in a block.
Notably, a significant share of the supply, including Satoshi Nakamoto’s coins, is held in older wallets with already exposed public keys. These funds cannot be protected from potential attacks by a sufficiently powerful future quantum computer unless their owners take action.
For XRPL, the circumstances are quite distinct. Approximately 2.4 billion XRP is spread across 300,000 accounts that have never initiated a transaction. Because their public keys have not been exposed, these accounts are effectively resistant to quantum brute-force attacks.
Vet’s analysis indicates that only a very small fraction of inactive large wallets may have exposed public keys due to past activity—specifically, just two accounts holding over 21 million XRP that have remained dormant for more than five years. Relative to the broader network, this accounts for a meagre 0.03% of the total supply.
XRPL’s Quantum Readiness: Progress So Far
Moreover, XRP benefits from an account-based design that supports key rotation. Unlike many blockchains, where upgrading a signature scheme typically requires moving funds to a new address, XRP users can update their signing keys while retaining the same account.
This enables the network to transition more seamlessly to post-quantum standards, including lattice-based schemes such as Dilithium, which are already being explored in alpha implementations.
As of today, no operational quantum computer is capable of breaking widely used cryptographic systems. While theoretical research suggests that advanced quantum machines could eventually threaten certain encryption and signature schemes, such capabilities remain out of reach with current technology. In response, the crypto industry is actively exploring post-quantum cryptography and transition strategies to future-proof networks.
According to Vet, the XRP Ledger is particularly well-positioned in this regard because its architecture supports seamless upgrades to signature algorithms without requiring hard forks or disruptive user migrations. The XRPL validator, however, admitted that this is not a perfect solution, and fully quantum-resistant algorithms will ultimately need to be implemented.
