The arrival of a cryptographically relevant quantum computer has long been a theoretical “black swan” event for the digital asset world. However, recent projections from Google suggest that the timeline for such a threat may be accelerating, with researchers indicating that a machine with significantly less firepower than previously estimated could potentially exploit legacy blockchains.
This shift in the technological landscape has sparked a critical debate over which networks are most resilient. While most blockchains rely on similar cryptographic foundations, emerging data suggests that XRP may be less exposed to quantum computer threats than bitcoin due to specific architectural advantages and the way the XRP Ledger (XRPL) handles account security.
At the heart of the issue is the vulnerability of public keys. In a standard blockchain transaction, a user’s public key is revealed to the network when they send funds. A sufficiently powerful quantum computer running Shor’s algorithm could theoretically use that exposed public key to reverse-engineer the private key—the secret password required to authorize transactions—effectively allowing an attacker to drain a wallet.
Because of this, the primary risk factor is not the size of a holder’s balance or the age of their account, but rather their activity. An account that has only received funds, and never sent them, has not yet exposed its public key to the network, remaining “quantum-safe” by default.
Analyzing the XRP Ledger’s Exposure
A recent audit conducted by Vet, a validator on the XRP Ledger, provides a quantitative look at this risk. The audit found that approximately 300,000 XRP accounts, holding roughly 2.4 billion XRP, have never sent any funds. Because these accounts have only received assets, their public keys remain hidden from the network, shielding them from the specific threat of Shor’s algorithm.
The vulnerability is concentrated among “dormant whales”—large holders who transacted years ago and then became inactive. Vet identified only two such accounts that are currently exposed and dormant, holding a combined 21 million XRP. This represents a mere 0.03% of the total circulating supply, a stark contrast to the vulnerabilities found in older blockchain architectures.
Beyond the sheer numbers, the XRPL offers a structural defense known as “key rotation.” This feature allows users to swap their signing keys without moving their funds to a new address. In practical terms, It’s the digital equivalent of changing the locks on a house without having to move to a new property.
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. Here’s obviously not a perfect solution at all and actual quantum resistant algorithms will eventuell be adopted
— Vet (@Vet_X0) March 2026
While key rotation is a powerful tool, it requires the owner to be active. The remaining risk for XRP lies with users who have lost their keys or passed away, leaving their exposed public keys as potential targets.
The Role of Escrow and Time Locks
Additional layers of protection exist within the ecosystem’s logic. Mayukha Vadari, a staff software engineer at Ripple, has highlighted the “escrow feature” as a non-cryptographic defense. Funds locked in escrow with a time lock are protected by a logical constraint rather than a mathematical hash; the funds simply cannot be withdrawn until a specific date has passed.
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
— Mayukha Vadari (@msvadari) March 2026
It is important to note a caveat: while the time lock protects the specific funds within the escrow, the account that created the escrow remains subject to the same quantum risks as any other account. An attacker who gains control of the primary account could potentially modify or cancel the escrow settings.
Comparing Structural Vulnerabilities: XRP vs. Bitcoin
When compared to the largest cryptocurrency, Bitcoin’s exposure appears significantly higher. This is largely due to the legacy of early mining. A substantial portion of early Bitcoin was created using the P2PK (Pay-to-Public-Key) format, which exposes the public key directly in the transaction output without requiring a spend transaction.
This legacy architecture includes the estimated 1 million BTC held by founder Satoshi Nakamoto. Broadly, estimates suggest that approximately 6.9 million BTC—nearly 35% of the circulating supply—are vulnerable to quantum attacks. This creates a massive “sitting duck” scenario that does not exist on the same scale within the XRP ecosystem.
| Feature | XRP Ledger (XRPL) | Bitcoin Network |
|---|---|---|
| Estimated Exposure | ~0.03% of supply | ~35% of supply |
| Key Rotation | Native feature (Change keys in place) | Not available (Must move to new address) |
| Legacy Risk | Low (Few dormant exposed whales) | High (P2PK format exposes keys) |
| Transfer Risk | Low (Key rotation avoids mempool) | Moderate (Public key exposed in mempool) |
Bitcoin holders face a “mempool” risk. Because Bitcoin lacks a native key rotation feature, a user wishing to move funds to a quantum-safe address must broadcast a transaction. While that transaction sits in the memory pool (mempool) for several minutes before being confirmed, the public key of the old address is exposed. A sufficiently fast quantum computer could theoretically intercept this and steal the funds before the original transaction is even processed.
Despite these structural hurdles, the Bitcoin community is not idle. Developers have already initiated several proposals to implement quantum-resistant signatures to safeguard the network’s trillion-dollar security race.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency investments carry a high degree of risk.
The next critical checkpoint for both networks will be the development and integration of post-quantum cryptography (PQC) algorithms. While the XRP Ledger’s current architecture provides a temporary buffer, the long-term solution for all blockchains will be the adoption of standardized quantum-resistant algorithms to ensure the permanence of digital ownership.
We invite our readers to share their thoughts on quantum readiness in the comments below.
