
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.
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Related Projects

Zero Hash is a business-to-business-to-consumer (B2B2C) crypto-as-a-service infrastructure provider that empowers businesses to integrate digital assets from the Hedera blockchain network directly into their customer experiences. It offers a comprehensive, API-driven solution for custody, liquidity, and regulated settlement for cryptocurrencies and stablecoins.
It provides a crucial on-ramp for Hedera ecosystem, enabling business clients to natively integrate Hedera Hashgraph into their platforms quickly and easily. This allows businesses to offer their customers the seamless ability to send, receive, store, and convert fiat, crypto, and stablecoins within a single cross-platform capable engine powered by Zero Hash's infrastructure.
Zero Hash is committed to compliance and regulatory coverage. It provides a “regulatory stack as a service” model and is licensed to operate in numerous territories including the US, Canada, Europe, Australia, and many more. This allows businesses to launch compliant crypto and stablecoin products with support for a wide array of assets across numerous blockchains and geographies and advances the utility of the native Hedera HBAR and HTS tokens.

SaucerSwap is a decentralized exchange (DEX) and automated market maker (AMM) protocol built on the Hedera blockchain network. It provides permissionless swapping services for Hedera Token Service (HTS) tokens.
The platform allows users to trade between Hedera-based assets and enables users to become liquidity providers by depositing HTS tokens into liquidity pools where they earn a share of the trading fees generated by those pools. Additionally, it offers yield farming programs which allow liquidity providers to stake LP tokens for further rewards.
SaucerSwap has its own native asset, the SAUCE token, which is used for platform governance through a decentralized autonomous organization (DAO) as well as for staking and incentivizing liquidity. The platform aims to be a foundational component of the DeFi landscape on Hedera by providing essential infrastructure for token exchange and liquidity services to the network's users and developers. It also prioritizes user and network security through decentralized management and third-party security audits for smart contracts.

Certara is a global leader in biosimulation, a technology that uses computer models to predict how drugs will behave in the human body. Founded in 2008 and headquartered in Princeton, New Jersey, its mission is to accelerate the development of new medicines by transforming the traditional drug discovery and development process.
The company offers a comprehensive suite of software and services that are used by over 2,000 biopharmaceutical companies, academic institutions, and regulatory agencies in 62 countries. Certara's Simcyp Simulator, for example, is a physiologically-based pharmacokinetic (PBPK) modeling platform that is widely used to predict drug interactions. In addition to its software, Certara provides a range of consulting services, including regulatory science, market access, and medical writing.
Certara's OpenPharma innovation has developed a decentralized application called Hasharc that is built on the Hedera network and designed to address key challenges in the life sciences industry, such as supply chain security, patient safety, and regulatory compliance.

The Fugitives Club NFT is a collection of 1,912 unique digital collectibles minted on the Hedera Hashgraph network. Each "fugitive" character in the collection is algorithmically generated from multiple layers of distinct images and graphics, resulting in a visually unique NFT with its own identity. The project is recognized as an early entrant in the Hedera NFT space, with its initial minting event occurring in November 2021.
Beyond collectibility, The Fugitives Club is noted for its contribution to developer tooling within the Hedera ecosystem. The project team developed and made available a command-line interface (CLI) tool via GitHub, designed to facilitate the minting of NFTs using Hedera and the InterPlanetary File System (IPFS) for decentralized storage. This indicates a broader engagement with the underlying technology.
The project features a cultivated community, with "clans" of fugitives and dedicated channels for engagement. The Fugitives Club represents one of the foundational NFT projects on Hedera, combining unique digital art with contributions to the developer community.
