The blockchain built for the quantum era.
Calix Chain is a sovereign Layer 1 with a full EVM, native token standards and NIST-standardised post-quantum cryptography — ML-KEM-768 for key encapsulation and ML-DSA-65 for digital signatures — engineered in from the first block, not bolted on later.
ML-DSA-65
Today's signatures and key exchange will not survive a quantum computer.
Elliptic-curve cryptography secures almost every blockchain in production. Shor's algorithm breaks it outright on a large enough quantum computer — and ledgers are permanent, so data recorded today can be attacked tomorrow.
Harvest now, decrypt later
Adversaries can record encrypted traffic and on-chain ciphertext today and decrypt it once quantum hardware matures. Key encapsulation has to be quantum-safe before the threat is real.
Forgeable signatures
A public key that has ever been exposed on chain can, in principle, be inverted to its private key. Lattice-based signatures remove that class of attack for good.
Standards, not experiments
NIST finalised ML-KEM (FIPS 203) and ML-DSA (FIPS 204) in 2024. Calix builds on the standardised algorithms rather than proprietary schemes.
Two NIST standards. One post-quantum layer.
Both primitives are lattice-based (Module-LWE and Module-SIS), implemented in a memory-safe Rust core with a Go binding used directly by the chain.
ML-KEM-768
Addresses register an ML-KEM-768 encapsulation key on chain. Anyone can then derive a shared secret with them and encrypt data end-to-end with AES-256-GCM — ciphertext that stays confidential even against a quantum adversary.
| Security category | NIST Level 3 (≈ AES-192) |
| Encapsulation key | 1,184 bytes |
| Ciphertext | 1,088 bytes |
| Shared secret | 32 bytes |
| Hybrid payload cipher | AES-256-GCM |
| On-chain module | x/pqc — key registry |
ML-DSA-65
A lattice-based signature scheme (derived from CRYSTALS-Dilithium) with deterministic key generation from a 32-byte seed, hedged signing and context strings. Verified byte-for-byte against NIST ACVP test vectors.
| Security category | NIST Level 3 |
| Public key | 1,952 bytes |
| Signature | 3,309 bytes |
| Secret key | 4,032 bytes (or 32-byte seed) |
| Signing mode | Pure interface, hedged, ctx ≤ 255 B |
| Conformance | NIST ACVP keyGen + sigVer vectors |
Sizes are those of the FIPS parameter sets. The PQC library is open to inspection by auditors on request.
A modular stack, sovereign by design.
Calix Chain is assembled from battle-tested Cosmos components and extended with its own execution and cryptography modules.
dApps · DEX · Bridge · Wallets
Solidity contracts, CosmWasm contracts and native CLX20 / CLX721 / CLX1155 assets share one ledger.
EVM · CosmWasm · Native token modules
Ethereum JSON-RPC, MetaMask-compatible transactions, plus token standards implemented as chain modules for lower gas and stronger guarantees.
x/pqc · ML-KEM-768 · ML-DSA-65
On-chain registry of post-quantum encapsulation keys, encrypted transfer messages, and the signature primitives backing the migration path.
CometBFT · Proof-of-Stake · IBC
Instant deterministic finality, delegated staking with slashing, and inter-blockchain communication with the Cosmos ecosystem.
Everything a production Layer 1 needs.
Fast, final blocks
CometBFT gives one-block deterministic finality — no reorgs, no waiting for confirmations.
Full EVM compatibility
Deploy existing Solidity contracts and use familiar tooling — Hardhat, ethers, MetaMask.
Native token standards
CLX20, CLX721 and CLX1155 are chain modules, not contracts: cheaper to use and not exposed to contract-level bugs.
IBC & bridge
Connect to the Cosmos ecosystem through IBC and move assets to other chains through the Calix bridge relayer.
CosmWasm contracts
A second, Rust-based smart-contract runtime for applications that want stronger isolation.
Proof-of-Stake security
Bonded validators, delegation, on-chain governance and slashing keep the network honest and upgradeable.
Exactly where post-quantum stands today.
Cryptography deserves precise claims. This is what is live, what is in progress and what is planned.
Point your tools at Calix Chain.
Standard Ethereum tooling works out of the box. Add the network to your wallet or script against the JSON-RPC.
| Network | Calix Chain Testnet (calix-test-1) |
| EVM chain ID | 999 (0x3e7) |
| Native currency | CLX (6 decimals native · 18 in EVM) |
| Consensus | CometBFT 0.38 · Proof-of-Stake |
| Address formats | calix1… (Bech32) · 0x… (EVM) |
| Interfaces | JSON-RPC · Cosmos REST · gRPC · CometBFT RPC |
# JSON-RPC · eth_chainId curl -s -X POST $CALIX_RPC \ -H 'content-type: application/json' \ -d '{"jsonrpc":"2.0","id":1, "method":"eth_chainId","params":[]}' # → {"jsonrpc":"2.0","id":1,"result":"0x3e7"}
Public RPC endpoints are published with the open testnet programme.
Build on the first post-quantum Layer 1 from day one.
Join the testnet, deploy a contract, register a post-quantum key.