W3C Decentralised Identifiers (DIDs) are a new type of globally unique identifier designed to enable verifiable, decentralised digital identity. As a formal web standard published by the World Wide Web Consortium (W3C), the DID architecture is a foundational component for building a more secure and user-centric internet.
Unlike traditional identifiers such as email addresses or usernames, DIDs are not tied to any centralised registry or company. This means that individuals and organisations can create and control their own identifiers, giving them "self-sovereign" control over their digital identities. The core of the system is the DID Document, a JSON file that contains the cryptographic keys and service endpoints associated with a DID. This document is stored on a distributed ledger or other decentralised network, allowing for secure and verifiable interactions.
The Hedera Consensus Service (HCS) is used to create a tamper-proof and auditable log of all DID-related events, such as creation, updates, and revocation.
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LimeChain is a blockchain development and consulting company that provides end-to-end services for startups and enterprises seeking to build on Web3 technologies. LimeChain offers deep expertise across a wide range of protocols, delivering solutions that include custom dApp development, DeFi product engineering, smart contract creation and audits, and strategic blockchain consulting. It works with clients to navigate the complexities of the decentralized web, from initial proof-of-concept and architecture design to full-scale implementation and support.
The company has established itself as a key development partner within numerous blockchain ecosystems, including a significant and long-standing relationship with Hedera. LimeChain has been instrumental in building core functionalities and tools for the Hedera network. Their collaborative work includes leading the development of the Hedera Token Service (HTS) and creating an open-source demonstration of the Hedera Consensus Service (HCS) integrating with enterprise systems such as Microsoft Dynamics.
Furthermore, LimeChain was a key technical partner in developing Hashport, a pioneering interoperability solution that uses HCS to bridge assets between Hedera and other major networks.
Medical Value Chain (MVC) is a Bahrain-based subsidiary of AVC Global. It provides a track-and-trace platform for pharmaceutical supply chains to ensure regulatory compliance and combat counterfeit drugs. MVC's innovative financial model is funded by the pharmaceutical industry, meaning there is no cost to governments or citizens.
MVC's core product is the SmartPass, a platform built on a dual-blockchain architecture that integrates with GS1 global serialisation standards. This technology creates a transparent and immutable record of pharmaceutical products as they move through the supply chain, from manufacturer to consumer. SmartPass is designed to provide "absolute transparency," protecting against counterfeit medications, improving supply chain efficiency, and reducing fraud. A key component of this system is the OneScan feature, which allows for the verification of product authenticity.
The company utilises the Hedera Consensus Service (HCS) to create a verifiable and auditable log of all supply chain events. This "dual immutable distributed ledger technology" provides a high level of security and transparency, ensuring the integrity of the data.
Immutable Holdings Inc. is a publicly traded digital asset company focused on increasing the awareness, access, and adoption of cryptocurrencies. Founded in 2017 and headquartered in San Juan, Puerto Rico, the company operates as a blockchain holding company, managing a portfolio of businesses within the digital asset ecosystem.
Key holdings include NFT.com, a platform for the non-fungible token (NFT) ecosystem, HBAR.com, a community portal for the Hedera network, and MyHBARWallet.com, an open-source wallet for Hedera's native token, HBAR. Immutable Holdings also provides educational resources through 1-800-Bitcoin, which offers masterclasses and other materials for those new to the crypto space.
Immutable Holdings is one of the core firms associated with the Hedera blockchain network. Its founder, Jordan Fried, was a member of Hedera’s founding team and Immutable Holdings is one of the largest public holders of HBAR. Its subsidiary, Immutable Asset Management, is dedicated to managing this strategic HBAR position.
Numbers Protocol is a decentralized network designed to establish trust and authenticity in digital media. Its primary mission is to address the challenges of misinformation and copyright infringement by creating a verifiable record of content provenance from creation to publication. It provides a transparent and immutable history for digital assets, including images, videos, and audio files.
At its core, Numbers Protocol offers a suite of tools and services for creators and developers. This includes the "Capture App," which allows users to register their digital creations, embedding them with unique identifiers and contextual metadata. The "Numbers Blockchain" serves as a specialized distributed ledger for indexing these assets and their histories. The protocol also features a "Verify Engine," a reverse-image search tool enhanced with AI, enabling users to trace the origin and modification history of digital media.
By leveraging blockchain technology and decentralized storage, including the Hedera blockchain network, Numbers Protocol enables users to create on-chain proof of their digital media, secure ownership, and track usage.