Skip to main content

HCS Standards

Discover the comprehensive collection of Hedera Consensus Service standards that enable powerful decentralized applications and data management on the Hedera network.

Showing 12 of 12 items
HCS-1
Published

HCS-1: File Data Management

Core Data Management

Systematic approach to encode, chunk, upload, retrieve, and reassemble file data using Hedera Consensus Service. The foundation for data management on HCS.

Key Features: Data chunking, File reconstruction, Consensus-based storage
HCS-2
Published

HCS-2: Advanced Topic Registries

Core Data Management

Advanced methodologies for managing and interacting with Topic Registries within the HCS framework, enabling organized data discovery.

Key Features: Topic organization, Registry management, Data indexing
HCS-3
Published

HCS-3: Recursion within HCS

Core Data Management

Enables recursive referencing of inscriptions within Hedera Hashgraph, standardizing how resources reference and load other resources.

Key Features: Recursive references, Resource loading, Standardized linking
HCS-5
Published

HCS-5: Tokenized HCS-1 Files (Hashinals)

Digital Assets & NFTs

Standard for "inscribing" Hashinals utilizing both Hedera Consensus Service and Hedera Token Service for tokenized file assets.

Key Features: NFT creation, File tokenization, HTS integration
HCS-6
Published

HCS-6: Dynamic Hashinals

Digital Assets & NFTs

Inscribe and tokenize Hashinals with updatable metadata using non-indexed Topic IDs, enabling evolving digital assets.

Key Features: Mutable metadata, Dynamic updates, Flexible NFTs
HCS-7
Draft

HCS-7: Smart Hashinals

Digital Assets & NFTs

A Micro-DSL for Deterministic Topic Selection enabling dynamic NFTs whose metadata automatically updates based on smart contract state.

Key Features: Smart contracts, WASM processing, State-reactive NFTs
HCS-8
Published

HCS-8: Poll Topic Standard

Governance & Polling

Framework for using HCS topics to manage decentralized polls and voting mechanisms with transparent, auditable results.

Key Features: Decentralized voting, Poll management, Result aggregation
HCS-9
Published

HCS-9: Poll Metadata Schema

Governance & Polling

Defines the schema to describe and execute polls in conjunction with HCS-8, ensuring standardized poll structure and execution.

Key Features: Poll schemas, Metadata standards, Execution framework
HCS-10
Draft

HCS-10: OpenConvAI Standard

AI & Communication

Enables AI agents to autonomously discover and communicate through Hedera's Consensus Service with secure, verifiable interactions.

Key Features: AI communication, Agent discovery, Decentralized registry
HCS-11
Published

HCS-11: Profile Metadata Standard

Identity & Profiles

Standardizes profile metadata for entities on Hedera, enabling consistent identity representation across applications.

Key Features: Profile metadata, Identity standards, Cross-app compatibility
HCS-13
Draft

HCS-13: Schema Registry

Infrastructure

Provides a standard way to define, register, and reference schemas for data validation and structure in the Hedera ecosystem.

Key Features: Schema validation, Type-safe data, JSON Schema support
HCS-20
Published

HCS-20: Auditable Points Standard

Points & Rewards

Manages and audits points on Hedera Hashgraph, inspired by BRC-20. Enables transparent reward systems and loyalty programs.

Key Features: Point management, Audit trails, Reward systems