
HashLog
Hashlog is a data verification service that leverages the Hedera Consensus Service (HCS) to create immutable events or data logs. It enables applications and enterprises to submit messages to the HCS, where each message receives a consensus timestamp from the Hedera network, ensuring its integrity and order. This process provides a secure and transparent "proof-of-action" or "proof-of-event" capability.
Its core functionality offers a data trail for on-chain information. Once data is logged via Hashlog to the HCS, it cannot be altered or retrospectively tampered with, providing a high degree of data integrity. This is particularly useful for use cases requiring regulatory compliance, dispute resolution, or the tracking of critical operational processes. Developers integrate Hashlog systems using APIs or SDKs.
By utilizing Hedera, Hashlog provides decentralized trust, cryptographic verification, and public accessibility (if desired) for the logged information. Its applications span across multiple domains, including supply chain management for tracking goods, IoT data streams for device event verification, and legal tech for timestamping documents.
Project Information
Related Projects

EarthID is a UK-based company founded in 2018 that has developed a decentralised identity and verifiable credentials platform. The company's mission is to combat identity fraud, enhance data privacy, and build customer trust in an increasingly digital world.
The core of EarthID's service is a platform that enables organizations to issue and verify digital credentials in a secure and frictionless manner. This includes solutions for Digital KYC, which streamlines customer onboarding, and passwordless authentication, which enhances security by removing the need for traditional passwords. The platform is designed to be compliant with global data regulations including GDPR.
EarthID's platform is built on the Hedera network and uses the Hedera Consensus Service (HCS) to create an immutable and auditable log of all identity-related transactions, ensuring a high level of trust and transparency. The integration with Hedera is fundamental to EarthID's ability to offer a scalable and secure decentralised identity solution that can be used by organizations and individuals around the world.

Taskbar is a decentralized freelance marketplace and gig-economy platform built on the Hedera blockchain network. It connects clients with freelancers for on-demand tasks and services in a more efficient, transparent, and equitable Web3 environment. It acts as an alternative to traditional freelance websites by addressing issues such as high commission fees and slow payment settlements.
Taskbar facilitates payments in HBAR, USDC, and other Hedera-based tokens, enabling near-instant settlement directly to a freelancer's wallet. A key feature is its on-chain escrow system, where funds for a job are locked in a smart contract and released automatically upon successful completion of the task, ensuring security for both parties. It also boasts a gamified reputation system implemented to build trust and incentivize positive user behavior.
To enhance transparency and trust, Taskbar utilizes the Hedera Consensus Service (HCS) to create an immutable and auditable log of all critical platform activities, including task creation, proposals, and reviews. This forms the basis of a verifiable on-chain reputation system for freelancers.
Third Act Digital is a non-fungible token (NFT) marketplace specifically designed for the theatre community, allowing fans to collect and own digital representations of memorable theatre performances and moments. It leverages the Hedera network for NFT creation and facilitates transactions for purchasing digital collectibles using the USDC stablecoin.
A core objective of Third Act Digital is to deepen fan engagement by providing a novel way to interact with and own verified pieces of theatrical history. The platform collaborates with renowned theatre institutions such as The Public Theater to curate unique NFT offerings that capture iconic moments from various performances. This initiative bridges the gap between traditional theatre and the world of digital collectibles.
Built on the carbon-negative Hedera Hashgraph, Third Act Digital emphasizes a sustainable approach to blockchain technology. To ensure a smooth user experience, particularly for new users, the platform integrates Venly's Wallet API. This facilitates easy onboarding and interaction with the marketplace, allowing a broader audience to participate in collecting theatre-related NFTs.

Hex Trust is a fully-licensed and insured digital asset custodian that provides bank-grade infrastructure and services for the Web3 ecosystem. Its mission is to bridge the gap between traditional finance and the digital asset economy by providing a secure and compliant platform for institutional investors.
The company offers a comprehensive suite of services built around its proprietary platform, Hex Safe. This includes institutional-grade custody for a wide range of digital assets, including cryptocurrencies, security tokens, and NFTs. In addition to custody, Hex Trust provides staking services, DeFi access, and brokerage and financing solutions. This integrated approach allows their clients, which include financial institutions, asset managers, and Web3 projects, to securely manage and grow their digital asset portfolios.
The Hex Safe platform supports HBAR and all tokens issued on the Hedera Token Service (HTS), making it an official custodian for the Hedera ecosystem. This partnership enables institutional clients to securely hold and stake HBAR, as well as to custody and manage HTS-based tokens. Hex Trust also serves as a strategic custodian for TOKO, a tokenization engine built on Hedera in collaboration with DLA Piper.
