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XRP Ledger XRP

Rank #4 by market capNo quantum-safe path live
Market cap
$81.8B
▲ 2.30% 24h
DeFi TVL
$38.7M
DefiLlama
Exposed share of supply
n/a
No published estimate
Value in exposed keys
n/a
Signature scheme
secp256k1 ECDSA and Ed25519
Key hidden until first signature
Yes

An XRPL address is the RIPEMD160 of the SHA-256 of the public key (secp256k1 or 0xED-prefixed Ed25519), base58 encoded, so a receive-only account has not revealed its key. Every signed transaction carries the SigningPubKey field, so the key is public after the first send; a holder can set a regular key and disable the master key to move to a fresh, unexposed key.

Quantum-safe path
None live

Not live. Ripple's Post-Quantum Readiness on the XRP Ledger (20 April 2026) sets a four-phase plan: a Q-Day recovery contingency (stop accepting classical signatures, migrate via post-quantum zero-knowledge ownership proofs), evaluation of NIST schemes in H1 2026, candidate PQ signatures alongside ECDSA on Devnet in H2 2026, and an amendment for native PQ signatures targeting 2028. Testing is on AlphaNet and Devnet.

No published exposure measurement yet

Lower confidence than the Bitcoin and Ethereum figures: this is an independent validator's analysis published on X and reported by NewsBTC, not a firm or peer-reviewed study. Ripple's own post gives no exposure figure. A validator's full-ledger scan reported 0.768 exposed as of 2026-04-29 (https://www.tradingview.com/news/newsbtc:7614c0f49094b:0-23-billion-xrp-already-quantum-safe-according-to-new-wallet-analysis/), but it is a social post relayed by news sites, below our bar for a published number. Recorded here as context only.

Sources