
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

Hyundai Motor Company has launched the Supplier CO₂ Emission Monitoring System (SCEMS)—an AI‑powered, blockchain‑based platform built on the energy‑efficient and highly scalable Hedera Network. SCEMS tracks carbon emissions across Hyundai’s entire supply chain, including raw material sourcing, manufacturing processes, and transportation, ensuring data integrity, transparency, and real‑time visibility. B
By leveraging Hedera’s robust Distributed Ledger Technology, Hyundai securely collects and verifies environmental data, enabling accurate measurement, predictive forecasting, and compliance with emerging global emissions standards.
This solution simplifies and automates supplier reporting while strengthening stakeholder and investor confidence in the veracity of carbon data. Hyundai’s adoption of SCEMS exemplifies a real‑world enterprise use case within the Hedera ecosystem, demonstrating how sustainability-driven innovation can be powered by trusted, high‑performance DLT.

HashSea is a dedicated NFT marketplace and launchpad platform operating on the Hedera blockchain network. It provides a space for creators and buyers to mint live, purchase assets on secondary market or create their own NFT assets while engaging with the other digital assets native to the Hedera network.
As a marketplace, HashSea facilitates the discovery, purchase, and sale of Hedera NFTs, leveraging the network's high throughput and remarkably low, predictable transaction fees. Meanwhile, functioning as a launchpad, HashSea empowers creators by offering tools and services to easily mint and debut new projects directly to the Hedera ecosystem. This dual role positions HashSea as a key enabler for both established and emerging artists and developers looking to capitalize on Hedera's efficient, carbon-negative infrastructure.
HashSea’s utilization of the Hedera Token Service (HTS) allows it to offer features embedded features such as native, enforceable royalties for creators and near instant transactions. It supports the HashPack wallet for minting, listing, and trading NFTs on the Hedera blockchain network.

TRM Labs is a blockchain intelligence company founded in 2018, with headquarters in San Francisco. It specializes in helping financial institutions, crypto businesses, and government agencies detect and investigate cryptocurrency-related fraud and financial crime. TRM's mission is to build a safer financial system by blending blockchain data with advanced analytics.
The company's core services are delivered through a comprehensive risk management platform that includes solutions for transaction monitoring, wallet screening, and forensics. Key products include TRM Transaction Monitoring, which provides real-time risk scoring for AML (Anti-Money Laundering) compliance, and TRM Forensics, which offers tools to trace the source and destination of crypto funds. The platform supports over 100 blockchains and 200 million digital assets, providing a cross-chain view of transactions.
TRM Labs’ full suite of compliance and risk management tools supports HBAR, the native cryptocurrency of Hedera, as well as other assets issued on the network. This integration allows organizations building on Hedera to leverage TRM's platform to detect financial crime, meet regulatory requirements, and ensure the safety of their applications.

Onchain Custodian is a centralized exchange headquartered in Singapore. It specializes in providing secure and compliant digital asset custody services tailored primarily for institutional clients including entities such as investment funds, family offices, and other financial institutions managing significant digital asset portfolios.
The core of Onchain Custodian's offering is a global, standardized, and resilient service focused on security, convenience, and regulatory adherence. Their solutions incorporate multi-signature wallets and advanced security protocols.
Onchain Custodian has previously partnered with firms such as IBM, Merkle Science and Accuity to enhance its compliance and transaction monitoring capabilities. As well as platforms including Apifiny and exchanges such as KuCoin and CyberBank. Additionally, it has provided custodian services for tokenization platforms such as Polymath.
It has also collaborated with PixelPlex to secure wealth management tools, CACHE for custody services related to gold-backed tokens, and secured partnerships with multiple blockchain ecosystems including Hedera, Neo, Ontology, and Zilliqa.
