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The Proof of Authority (PoA) module is a Cosmos SDK module that enables permissioned consensus for networks requiring controlled participation. A designated administrative authority manages the validator set directly, ensuring that only approved operators participate in block production and governance. Unlike traditional Proof-of-Stake systems, validator membership is not determined by token staking. Validators are explicitly authorized, updated, and removed through on-chain administrative actions, enabling predictable operations and compliance-aligned governance. The PoA module is designed for networks that require:
  1. Permissioned Operators: A configurable administrative authority defines validators and governance participants to meet organizational security, compliance, or consortium requirements.
  2. Instant Validator Updates: Add, remove, or replace validators, adjust relative validator weights, and rotate keys in a single atomic on-chain action.
  3. Token-Free Operation: Launch, operate, and govern a network without issuing or managing a native token.
  4. Future-Proof Architecture: Seamlessly transition to Proof-of-Stake and introduce a token when needed.

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The best available option for Proof of Authority

CharacteristicAlternativesCosmos PoA Module
Compatibility with Cosmos SDK v0.53+✗✓
Support for token-free operation✗✓
Flexible governance authority✗✓
Programmable penalties (jailing, slashing)✗✓
Included in Cosmos bug bounty program✗✓
Ongoing development by Cosmos core developers✗✓

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Source Code

The source code for the Proof of Authority module can be found here.

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Available Documentation

This directory contains detailed documentation for the Proof of Authority module.
  • API Reference - Complete API reference for gRPC queries and transactions
  • Architecture - System architecture and module integration details
  • Distribution - Fee distribution mechanics and algorithms
  • Governance - Governance integration and power-based voting

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Availability

The Proof of Authority module is commercially licensed and available as part of the Cosmos Enterprise subscription. Contact institutions@cosmoslabs.io to learn more about how you can use the Proof of Authority module for your chain.