Quantum Resistant Ledger (QRL) is a Layer 1 blockchain that secures accounts with hash-based XMSS signatures designed to resist quantum attacks, with the native token QRL.
Quantum Resistant Ledger is a blockchain built around signature schemes that aim to stay secure even against future quantum computers. Here is how it works and what it is used for, not the price.
Total value locked (DeFi)
n/a
Value locked in DeFi protocols on Quantum Resistant Ledger. Updated Jun 8, 2026. Source: DefiLlama.
QRL launched in 2018 as a proof of work chain where miners produce blocks roughly once a minute. Its defining feature is account security based on XMSS, a hash-based signature scheme standardized by the IETF, rather than the elliptic-curve signatures most chains use. A separate proof of stakenetwork codenamed Zond has been in public beta since 2024 and is planned to follow once audits and testing complete.
Consensus: Proof of Work
QRL launched in 2018 as a proof of work chain where miners produce blocks roughly once a minute. Its defining feature is account security based on XMSS, a hash-based signature scheme standardized by the IETF, rather than the elliptic-curve signatures most chains use. A separate proof of stake network codenamed Zond has been in public beta since 2024 and is planned to follow once audits and testing complete.
XMSS signatures
A hash-based, forward-secure signature scheme used to authorize transactions. It relies on hash functions rather than the math that quantum computers are expected to break.
Quantum resistance
The cryptography is chosen to remain secure if large-scale quantum computers arrive, which could threaten elliptic-curve signatures used elsewhere.
OTS key tracking
XMSS uses one-time signature states, so wallets track which signing slots have been used to keep each key safe.
Project Zond
A proof of stake successor network in public beta that is intended to replace the original proof of work chain after auditing and stress testing.
Ecosystem & usage
What Quantum Resistant Ledger is used for.
QRL positions itself for long-term security rather than a wide smart contract ecosystem.
Long-horizon storage
Holding value on a chain whose account security is designed to survive future quantum computing.
Quantum-secure transfers
Sending QRL between accounts protected by XMSS signatures.
Token issuance
Creating digital tokens on a post-quantum base layer.
In Zypto App
Hold, swap and spend QRL.
Quantum Resistant Ledger is integrated in Zypto App. Hold QRL in self-custody, swap it to any supported asset, and use it across Zypto’s features.
QRL is a Layer 1 blockchain launched in 2018 that secures accounts with XMSS hash-based signatures intended to resist attacks from future quantum computers.
What makes QRL quantum resistant?
It uses XMSS signatures, which rely on hash functions rather than the elliptic-curve math that quantum computers are expected to be able to break.
What consensus does QRL use?
The original QRL network uses proof of work with blocks roughly every minute. A proof of stake network codenamed Zond has been in public beta since 2024.
What is Zond?
Zond is QRL’s proof of stake successor network, in public beta, planned to launch after audits and stress testing are complete.
Can I hold QRL in Zypto App?
Not yet. QRL isn't in Zypto App at the moment. You can hold it in any self-custodial wallet, and you can ask us to add Quantum Resistant Ledger using the "Request Quantum Resistant Ledger" button above.
