Quantus Namespace
| Author | ["Nikolaus Heger |
|---|---|
| Status | Draft |
| Type | Informational |
| Created | 2026-09-17 |
Table of Contents
Namespace for Quantus Network
Quantus Network is a post-quantum secure Layer-1 blockchain. Transactions are signed with ML-DSA (FIPS 204, the standardized form of CRYSTALS-Dilithium) at the ML-DSA-87 or ML-DSA-65 security level instead of the elliptic-curve schemes used by most other chains, accounts are derived from ML-DSA public keys with the Poseidon hash, and blocks are produced by a proof-of-work consensus called QPoW.
The node and runtime are built with the Polkadot SDK (Substrate), so the JSON-RPC surface, SCALE encoding and SS58 address encoding will look familiar to developers who know that ecosystem.
Wallets, signers and dapps written for Polkadot chains cannot, however, sign Quantus transactions or verify Quantus signatures, and Quantus does not participate in XCM.
The quantus namespace exists so that this difference is visible at the addressing layer.
Rationale
Quantus differs from the polkadot namespace in the parts that matter to cross-chain tooling:
- Signatures: every extrinsic is signed with ML-DSA-87 or ML-DSA-65. There is no sr25519, ed25519 or ECDSA support.
- Account derivation: an account ID is the 32-byte Poseidon hash of the ML-DSA public key, not the public key itself.
- Block hashing: block headers are hashed with Poseidon, not Blake2.
- Consensus: blocks are mined with QPoW. There are no validators, nominators or relay chain.
Describing Quantus under polkadot: would advertise a level of compatibility that does not exist, in the same way that the hedera namespace declined to reuse eip155 for its EVM-compatible networks.
Because the set of Quantus networks is small and controlled by one team, chains are referenced by name rather than by genesis hash. Each name resolves to a genesis hash that clients can verify over RPC; see the CAIP-2 profile.
Networks
| Network | CAIP-2 | Token | Genesis hash |
|---|---|---|---|
| Mainnet | quantus:mainnet |
QTC (12 decimals) | 0xfb5487c0be6ae4ade2d41d16e50465129861636c2b8d61fa94d7a19631626fba |
| Planck testnet | quantus:planck |
PLK (12 decimals) | 0x4901bf5c57fd3f9e726af399c763de6670dbdb115a91c0237e173f16eef65e72 |
All networks use SS58 address prefix 189, so an address string is the same on every Quantus network and the CAIP-2 identifier is what distinguishes them.
Mainnet
- JSON-RPC endpoint:
https://rpc1-mainnet.quantus.com - Explorer:
https://explorer.quantus.com - Native currency: QTC, 12 decimals
Planck testnet
- JSON-RPC endpoint:
https://a1-planck.quantus.cat - Native currency: PLK, 12 decimals, no monetary value
Governance
The node, runtime and tooling are developed in the open in the Quantus Network GitHub organization. Runtime upgrades are enacted on-chain. Changes to this namespace should be proposed as pull requests against this repository and discussed with the Quantus team.
References
- Quantus documentation - developer documentation for Quantus Network
- Post-quantum cryptography in Quantus - how ML-DSA and Poseidon are used
- Quantus chain repository - node and runtime source code
- Quantus Network GitHub organization - all Quantus repositories
- FIPS 204 - the ML-DSA signature standard
- Poseidon - the hash function used for account IDs and block hashes
- SS58 - the address encoding used by Quantus
- Polkadot SDK - the framework the Quantus node is built with
Copyright
Copyright and related rights waived via CC0.
Citation
Please cite this document as:
["Nikolaus Heger, "namespaces/quantus: Quantus Namespace [DRAFT]," Chain Agnostic Namespaces, quantus, September 2026 / . [Online serial]. Available: https://github.com/ChainAgnostic/namespaces/quantus.md