XRP less exposed to quantum threats than Bitcoin, experts say

XRP Ledger quantum vulnerability is, according to fresh audit data and expert analysis published this week, far less severe than the threat hanging over Bitcoin — and the gap comes down to architecture, not luck. A validator audit of the entire XRPL found that only a sliver of XRP's circulating supply sits in genuinely at-risk accounts, while Bitcoin's exposure runs into the hundreds of billions of dollars. The contrast is stark, and it's getting harder to ignore.

Why Quantum Computers Threaten Crypto at All

Every major blockchain runs on the same basic cryptographic scaffolding: a private key you never share, a public key derived from it, and a wallet address others use to send you funds. The quantum danger is that a machine running Shor's algorithm could theoretically work backwards from your public key to reconstruct your private key — and drain your wallet. The catch is exposure. Your public key only hits the network when you send a transaction, not when you receive one. That's the detail that matters most here.

Google set off a fresh wave of alarm when it said a sufficiently powerful Google quantum computing cryptocurrency threat could crack Bitcoin's cryptography with less computing power than previously estimated — flagging roughly 6.9 million BTC as potentially vulnerable. That's nearly 35% of Bitcoin's entire circulating supply. For context, Satoshi Nakamoto's estimated 1 million BTC stash, mined in Bitcoin's early days using the P2PK format that exposed public keys directly in transaction outputs, has never moved. Those coins are sitting ducks if a sufficiently powerful quantum machine ever arrives.

Is XRP More Quantum-Resistant Than Bitcoin?

Yes — at least structurally, and the numbers back it up. XRP Ledger validator Vet ran a full quantum vulnerability audit of the XRPL on Thursday and found that around 300,000 XRP accounts holding 2.4 billion XRP have never sent a transaction. Their public keys have never touched the network. These accounts are XRP Ledger quantum vulnerability-free by default, simply because they've only ever received funds.

The harder problem is dormant whale accounts — holders who transacted years ago, exposed their public keys, and haven't been online since. If a quantum computer materialized tomorrow, they'd have no way to rotate keys before an attack. Vet found exactly two such accounts on the entire ledger. Combined, they hold 21 million XRP. That's a significant pile of tokens in absolute terms, but as a share of circulating supply it rounds to roughly 0.03%. Stacked against Bitcoin's 35% exposure, the difference is almost absurd.

The XRP Ledger is account based and allows for signing key rotation. So you can rotate keys that sign on behalf of an account without switching the account. This is obviously not a perfect solution at all and actual quantum resistant algorithms will eventuell be adopted.

Key Rotation and the Escrow Defense

The XRPL's key rotation feature is the structural edge XRP has over Bitcoin right now. Think of it like changing the locks on your house without moving. You keep the same address, your funds stay put, and whoever had your old key is locked out — no send transaction required, no public key exposure. It's a clean fix for any account holder who's paying attention.

The problem, as Vet noted, is that not everyone is paying attention. Long-dormant accounts — holders who've lost keys, passed away, or simply gone offline — can't use a feature they don't know they need. That's the residual vulnerability, and it's real. But for active holders, the rotation option changes the calculus entirely compared to Bitcoin, where moving funds to a new quantum-safe address is the only option, and even that process exposes the old public key in the mempool for up to ten minutes.

Mayukha Vadari, staff software engineer at Ripple, highlighted a second line of defense: the XRPL's escrow feature. Funds locked under a time lock are protected not by cryptography but by protocol logic — no one can withdraw them until the specified time passes, quantum computer or not. The account that created the escrow still carries its own exposure, but the funds inside the lock are structurally protected.

Time locks aren't hash based either, you just can't get in until that time has passed — at least not via quantum, you'd need some other bug for that. Yeah that's true, can't stop a blackholing — but the attacker is less incentivized to do that because they don't get the funds.

What Does This Mean for Bitcoin Holders?

Bitcoin's structural disadvantage here is worth taking seriously. The P2PK format used in the early days — including for those famous Nakamoto-era coins — put public keys directly into transaction outputs. No spend needed. Just reading the blockchain is enough to identify vulnerable addresses. That's a fundamentally different exposure profile than the XRPL.

Bitcoin developers aren't sitting still. Bitcoin quantum resistance proposals like BIP 360, which introduces a Pay-to-Merkle-Root output type as a quantum-safe alternative, are already circulating among developers. The technical community is working the problem. But proposal is not solution, and the timeline for quantum machines reaching the power needed to actually execute these attacks remains genuinely uncertain — probably years away, possibly a decade or more.

The structural gap is real today, though. A Bitcoin holder who wants to migrate funds to a quantum-safe address faces a ten-minute window of exposure during the transaction, a window that gets scarier as quantum hardware improves. XRP holders with active accounts have a key rotation path that sidesteps that exposure entirely. Call it an architectural accident or intentional design — either way, XRP came out of this audit looking meaningfully better than Bitcoin on this particular risk.