Arrekta
Post-quantum · proof of work · native assets
Arrekta is a public blockchain where stablecoins, tokenised deposits and other real-world assets are issued and settled with NIST post-quantum cryptography: signatures that stay safe after large quantum computers arrive.
The problem
Almost every blockchain signs with elliptic curves (ECDSA, Ed25519). A large enough quantum computer running Shor's algorithm recovers the private key from a public one. Public keys are already on-chain, so an attacker can collect them now and forge later.
Deposits, bonds and stablecoins are held for years. An asset issued today should still be safe to hold and move in 2040. Migrating a whole ecosystem's keys under pressure is far riskier than starting on algorithms built for that future.
Regulated issuers must be able to freeze or recover funds, and holders deserve to know that before they buy. On most chains that lives in custom smart contracts that each need their own audit. Users can't easily see what the issuer can do.
How Arrekta solves it
Every signature is ML-DSA (NIST FIPS 204). Nodes talk over a hybrid X25519 + ML-KEM-768 encrypted channel. Hashing is SHA3-256 everywhere. There is no quantum-vulnerable path to migrate away from later.
Issue, mint and burn assets without writing contracts. Issuer controls (freeze, clawback) are declared at issuance, shown publicly and enforced by consensus, so holders know the rules up front.
A public, rotatable group of post-quantum signers signs checkpoints. Once a block is final, no reorganisation can undo it: what settlement systems need.
Blocks are merged-mined in Namecoin's AuxPoW format, so Bitcoin mining pools can secure Arrekta at no extra energy cost.
Multisig, timelocks, hashlocks, swaps, vaults and vesting come from one small policy language that is easy to review. Payments and channels are built on top of it.
A Rust production node and a Python reference node agree byte for byte on shared conformance vectors and are fuzzed against each other continuously.
The platform
The name
Arrekta comes from Homer's Greek arrhēktos, "unbreakable": the word for bronze walls, and for the chains Hephaestus forged that even the gods could not break.
The mark is a hexagon, the cell of a crystal lattice. Arrekta's signatures come from NIST's CRYSTALS family of lattice-based cryptography: hard problems on lattices that neither classical nor quantum computers are known to solve. The ticker is ARRK.
Try it
For Mac, Chrome, Brave and Edge, with Windows and Linux coming. Your keys stay on your device.
downloads.arrekta.com →Free test ARRK for your wallet, to try payments, assets and swaps.
explorer.arrekta.com/faucet →Blocks, transactions, assets, finality, payment channels and the market, live.
explorer.arrekta.com →The issuer console: create an organisation, issue an asset, manage holders and controls.
studio.arrekta.com →Concepts, guides, the protocol specification and both SDKs (TypeScript and Python).
docs.arrekta.com →The public REST API for wallets, apps and integrations, with live events.
api.arrekta.com →Arrekta is under active development. The public testnet runs the full protocol, but the code has not yet had an external security audit, and testnet coins have no value. Please don't use it to hold or move real value. Mainnet will follow the audit and a public signer ceremony.