7 posts tagged with "Hedera"

With the explosive growth of AI agents, distributed systems, and decentralized applications (dApps), there's an increasing need for immutable, decentralized data sharing. When multiple actors—whether human or machine—need to coordinate without relying on a centralized database, how do you verify who published what, and in what order?

Enter the Hedera Consensus Service (HCS).

HCS provides high-throughput, natively ordered, and cryptographic consensus on message streams without the overhead of smart contracts. However, to build structured applications on top of raw message streams, you need standards.

That's why we recently published the Official Hashgraph Online Standards SDK for Go, a complete reference implementation for the Hiero Consensus Specifications (HCS).

In this tutorial, we will explore HCS-2: Topic Registries and show you how to build a decentralized registry in Go from scratch.

We are excited to announce that we’re preparing the publication of three new Hashgraph Online standards:

• HCS-15 Petals (Profiles) defines profile accounts that reuse the same private key as a base account.
• HCS-16 Floras (AppNets) defines multi-party AppNet accounts that coordinate assets and actions using a clear message flow and three required topics.
• HCS-17 State Hash defines how Petals and Floras publish verifiable state hashes.

All three documents are Status: Draft, Version 1.0.

Hashgraph Online’s Registry Broker is live because the writing is on the wall. We are still early in the agent economy, but the signal is clear: ERC-8004: Trustless Agents gives Ethereum-based projects a formal registry spec, NEAR’s Agent Interaction & Transaction Protocol (AITP) is in draft to connect their agents, Google is running an Agent-to-Agent preview inside Workspace, Coinbase is curating AI services through x402 Bazaar, and OpenAI turned its GPT ecosystem into a searchable agent storefront. Even the Agent Facts community behind NANDA publishes structured profiles at List39. Every major network is building or considering its own directory or protocol. If we wait until all of them are entrenched, the open agentic web becomes a stack of incompatible registries. We built the broker now so builders have a neutral discovery layer before fragmentation hardens.

Hashgraph Online has published HCS-14 (Universal Agent Identifier), a draft standard and SDK that gives AI agents a single, portable identifier across Web2 APIs, Web3 networks, and hybrid systems. HCS-14 works alongside self-sovereign identity by wrapping existing DIDs where they exist and providing deterministic identifiers where they do not, enabling reliable discovery and routing across protocols.

Status: Draft. We welcome feedback from the community in the HCS‑14 discussion.

HCS‑14 is network‑agnostic. It works across Web2 (A2A/REST), EVM/ETH, and more. Hedera support is optional. We start with Web2 and EVM, then cover Hedera.

TL;DRDirect link to TL;DR​

• A single, portable identifier (UAID) for agents across Web2 and Web3
• Two modes: deterministic AID or wrap your existing DID
• Minimal routing hints for discovery; identity details stay in DID docs/profiles

After months of iterating on HCS protocols and working through implementation challenges, we've completed the Hashgraph Online Standards Agent Kit – a TypeScript toolkit that lets your AI agents communicate directly with each other using the HCS-10 standard on Hedera. This toolkit addresses one of the most challenging problems in AI today: enabling secure, verifiable agent-to-agent communication.

"We built this toolkit to solve a real problem: enabling AI agents, swarms, systems and humans to communicate with each other in a standardized way without requiring developers to implement complex communication protocols from scratch." - Michael Kantor, President, Hashgraph Online DAO

After months of development and testing, I'm excited to announce we've just published our Standards SDK (v0.0.44) to npm. This open-source toolkit unifies our previously separate standard implementations under a single umbrella, making it easier for developers to build applications on Hedera.

"The Standards SDK represents the unification of our separate reference implementations into a cohesive developer experience. It's designed to grow with the ecosystem." - Michael Kantor

We're thrilled to announce that the Hashgraph Online DAO LLC is now officially established! This marks a pivotal step towards building a fully on-chain internet utilizing Hedera's Consensus Service (HCS) to interconnect data on various blockchains.

"The establishment of Hashgraph Online is more than just an organizational milestone; it represents the first step in building a new digital infrastructure, fully on-chain, open, and accessible to all." - Michael Kantor, President, Hashgraph Online