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A developer testnet for the XRP Ledger went fully quantum-secure back in December 2025 — months before most people started paying attention to the threat. That quiet milestone now sits at the center of a broader conversation about how ready the network actually is.
Only A Fraction Of Accounts Hold Hidden Keys
Reports from an XRPL validator show that roughly 300,000 of the network’s 7.8 million accounts are currently shielded from quantum attacks — not because of advanced cryptography, but because their public keys have never been exposed.
These accounts have never sent a transaction. Without a visible public key, a quantum attacker has no entry point. Together, they hold about 2.4 billion XRP.
The remaining accounts are a different story. Their public keys are visible on-chain. Traditional computers cannot crack them today. Quantum computers powerful enough to do so do not yet exist. But the window for preparation is open now, not later.
Quick XRP acc quantum vulnerability check.
~300,000 accounts on XRP holding 2.4B XRP never transacted, thus public key unknown and quantum safe.
while only 2 accounts with larger holdings of 21M XRP are dormant (inactive over 5 years) and have their public key exposed.
Dormant…
— Vet (@Vet_X0) April 7, 2026
Still, the scale of the immediate risk is narrow. Only two dormant accounts — inactive for more than five years — hold exposed public keys with significant balances.
Combined, they carry around 21 million XRP. That figure represents roughly 0.03% of the total XRP supply. Vulnerable inactive whales, based on reports from the validator, are extremely rare on this network.
XRP Ledger Sits In A Different Position Than Bitcoin
That rarity sets the XRP Ledger apart from Bitcoin, where large sums often sit untouched in old wallets using an outdated format called pay-to-public-key, or P2PK. Wallets tied to Bitcoin’s anonymous creator, Satoshi Nakamoto, fall into this category.
Their public keys are out in the open. On the XRP Ledger, that kind of exposure among major dormant holders is far less common.
The network also carries a structural advantage: built-in key rotation. Users can swap out their signing keys without changing their wallet address. That means if quantum computing advances faster than expected, account holders have a path to update their security without losing their existing address. Bitcoin does not offer this natively.
The XRPL also uses an amendment system, where validators vote on protocol changes. Data shows this process moves faster than Bitcoin’s upgrade path, which depends on miner consensus and tends to be slower and more contentious.
AlphaNet Test Signals Where The Network Is Headed
In December 2025, XRPL Labs developer Denis Angell confirmed that AlphaNet — the network’s developer testnet — had adopted ML-DSA, also known as CRYSTALS-Dilithium.
The National Institute of Standards and Technology, or NIST, has approved ML-DSA as a post-quantum signature standard.
AlphaNet also rolled out Quantum Accounts, Quantum Transactions, and Quantum Consensus, extending protection even to validator communications.
Featured image from Meta, chart from TradingView
