Architecture at a glance

Autheo Chain is built on Cosmos SDK v0.53.0 with CometBFT v0.38.17 consensus and a full Ethermint EVM layer. The chain introduces six custom modules on top of the standard Cosmos module set, primarily to implement NFT license–gated staking and a dual reward stream.

Chain stack

┌─────────────────────────────────────────┐
│           Application Layer             │
│   (dApps, DeFi, DevHub, Compute)        │
├─────────────────────────────────────────┤
│         EVM Layer (Ethermint)           │
│  JSON-RPC :8545 (HTTP) / :8546 (WS)     │
│  Chain ID: 2127 | eth_secp256k1 keys    │
├─────────────────────────────────────────┤
│        Cosmos SDK v0.53.0               │
│  x/staking  x/distribution  x/gov      │
│  x/bank  x/ibc  x/mint  x/slashing     │
├─────────────────────────────────────────┤
│        Custom Autheo Modules            │
│  x/license  x/licensedstaking          │
│  x/emissions  x/licensedistribution    │
│  x/autheo  x/e2ee                      │
├─────────────────────────────────────────┤
│       CometBFT v0.38.17                 │
│   P2P :26656 | RPC :26657              │
│   ~5 second block time                 │
└─────────────────────────────────────────┘

Custom modules

Module	Purpose
`x/license`	Stores and manages NFT `LicenseRecord` objects (ISSUED → BOUND → ACTIVE → REVOKED)
`x/licensedstaking`	Wraps `x/staking` with license pre-checks on delegate, undelegate, and validator operations
`x/emissions`	Mints per-block NFT emission rewards based on license tier; enforces 7B THEO global cap
`x/licensedistribution`	Accumulates and allows manual claiming of NFT emission rewards
`x/autheo`	Chain-specific governance parameters and Autheo-native operations
`x/e2ee`	End-to-end encryption key registry for secure on-chain messaging

NFT license system

Licenses originate as ERC-721 tokens on Arbitrum. When transferred to an Autheo Chain EVM address, an automatic hook mints a LicenseRecord in ISSUED status on the Cosmos side. Three tiers exist:

Tier	Right granted	Annual THEO emission
Sovereign	Create and operate a validator	~187,969
Prime	Delegate to external validators (higher tier)	~18,797
Core	Delegate to external validators (standard tier)	~1,880

See License lifecycle for the full state machine.

Key addresses

Each keypair produces three equivalent address representations using eth_secp256k1:

Format	Example
Cosmos Bech32	`autheo1...`
Validator operator Bech32	`autheovaloper1...`
Ethereum hex (EIP-55)	`0x...`

Network endpoints

Service	Default port
CometBFT RPC	26657
CometBFT P2P	26656
Ethereum JSON-RPC (HTTP)	8545
Ethereum JSON-RPC (WS)	8546
Prometheus metrics	26660
gRPC	9090
gRPC Gateway (REST)	1317

Start Here

Getting Started

Web Apps

Developers

APIs

Node operations

SDKs

Papers

Chain stack

Custom modules

NFT license system

Key addresses

Network endpoints

Further reading

​Chain stack

​Custom modules

​NFT license system

​Key addresses

​Network endpoints

​Further reading

Chain stack

Custom modules

NFT license system

Key addresses

Network endpoints

Further reading