The Hardy Index Quantum readiness benchmark
Updated 12 August 2026
Chains rated 23
2 Native
3 Shipping
9 Committed
4 Debating
5 Exposed
Methodology v1.1

Benchmark

How ready is your blockchain for quantum computing?

An independent benchmark of 23 major chains, scored from 0 to 100 against a published rubric. Every figure carries a primary source.

Maintained editorially. Scores measure quantum readiness only and are not an assessment of an asset. The full rubric, including what it deliberately does not measure, is on the methodology page. If you want the threat explained in plain language first, start with the guides.

The index

Filter by tier
23 chains, ranked by Hardy Score, as of 12 August 2026. Select a column heading to sort.
Rank Signature scheme on mainnet
1 Quantum Resistant Ledger QRL Native
92.0
XMSS (stateful hash-based), mandatory for all accounts
2 Abelian ABEL Native
84.5
Lattice-based post-quantum signatures, mandatory for all transactions
3 Nervos CKB CKB Shipping
75.5
secp256k1 by default; SPHINCS+ available via an on-chain lock script
4 Algorand ALGO Shipping
74.5
Ed25519 for standard accounts; Falcon for State Proofs and post-quantum transactions
5 Solana SOL Shipping
54.5
Ed25519 for all standard accounts
6 XRP Ledger XRP Committed
46.5
secp256k1 or Ed25519, selectable per account
7 Sui SUI Committed
45.5
Ed25519 for accounts, with multi-scheme support
8 Hedera HBAR Committed
42.0
Ed25519 or ECDSA on secp256k1, selectable per account
9 Stellar XLM Committed
41.0
Ed25519 for all classic accounts
10 Zcash ZEC Committed
41.0
RedDSA and RedPallas elliptic-curve signatures, with Halo 2 proofs
11 Aptos APT Committed
40.5
Ed25519 for account authentication
12 Polkadot DOT Committed
40.5
sr25519 (Schnorr over Ristretto-compressed Curve25519), with Ed25519 in some roles
13 Ethereum ETH Committed
40.0
ECDSA on secp256k1 for accounts; BLS for validator signatures
14 Cardano ADA Committed
37.5
Ed25519 for transaction signing; elliptic-curve VRF for slot-leader election
15 BNB Chain BNB Debating
22.5
ECDSA on secp256k1, for EVM compatibility
16 IOTA IOTA Debating
21.0
Ed25519 (EdDSA over Curve25519 with SHA-512) for layer-1 transactions
17 Tron TRX Debating
18.5
ECDSA on secp256k1
18 Bitcoin BTC Debating
17.0
ECDSA and Schnorr on secp256k1
19 TON TON Exposed
13.0
Ed25519, verified inside wallet smart contracts
20 Litecoin LTC Exposed
12.5
ECDSA on secp256k1, inherited from Bitcoin
21 Dogecoin DOGE Exposed
11.0
ECDSA on secp256k1, inherited from Bitcoin
22 Avalanche AVAX Exposed
10.5
ECDSA on secp256k1 across the C-Chain, X-Chain and P-Chain
23 Hyperliquid HYPE Exposed
7.0
ECDSA on secp256k1, via EIP-712 typed-data signing

Tier and score are separate axes. The tier records how far a chain has moved along the readiness spine. The score weighs six dimensions, some of which reward a sound algorithm choice or a low-exposure address model independently of deployment. Read them together.

This is a security-readiness assessment, not investment advice.