
Log4j
Apache Log4j is an open-source, Java-based logging utility used by developers to record application events, errors, and operational data. It is a popular tool for debugging, system monitoring, and conducting audits across myriad Java platforms.
In the Hedera ecosystem, the log4j2-hedera repository offers a specific integration for Log4j 2.x and provides a custom appender that enables recording of logged events directly to the Hedera network via the Hedera Consensus Service (HCS). This allows applications to interact with HCS to submit their log entries, effectively writing them onto Hedera's distributed ledger.
The primary benefits of this integration include ensuring that logged data is distributed, secure, and transparent providing provable security. Furthermore, it guarantees the integrity and immutability of the recorded log information, as each entry is validated by Hedera’s consensus mechanism. This specialized appender provides a robust solution for applications requiring verifiable, tamper-resistant logging. This use case is distinct from how Hedera's core network software and provides additional verification.
Project Information
Related Projects

Intiva Health is an Austin-based company, founded in 2017, developing a career management platform for healthcare professionals. As a parent company to several entities, including Incredable (formerly Ready Doc), Gummi World, and Nova Vita Wellness Centers, Intiva Health is focused on improving the healthcare ecosystem as a whole, from provider credentialing to patient wellness.
The company's core service is a cloud-based platform that automates and streamlines the administrative tasks associated with a medical career. This includes Incredable, a credentialing solution that allows medical professionals to securely store, manage, and share their credentials with healthcare facilities. The platform also offers a HIPAA-compliant secure messaging service and tools for managing continuing education..
Intiva Health uses Hedera's distributed ledger technology to create a secure, tamper-proof, and verifiable record of all credentials and work history. By storing this information on the Hedera network, Intiva Health can provide a single source of truth that can be instantly verified by hospitals and other healthcare facilities, reducing the credentialing process from months to seconds.

C14 is a financial technology company that provides a seamless fiat-to-crypto on-ramp solution for developers building on the Hedera blockchain network. Its core product is an easily embeddable widget that decentralized applications (dApps), wallets, and marketplaces can integrate directly into their platforms.
With C14's widget, users can purchase digital assets directly within the dApp they are using, employing familiar payment methods like credit or debit cards. The platform handles the entire transaction flow, including regulatory compliance aspects like Know Your Customer (KYC) checks, and delivers the purchased assets directly to the user's connected wallet. This creates a simple, "one-click" experience that significantly lowers the barrier to entry for mainstream adoption.
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Neuron is a London-based company founded in 2019 that is building decentralised infrastructure for machine-to-machine (M2M) commerce. The company's vision is to create a secure and transparent ecosystem where autonomous devices, such as drones and AI agents, can directly discover, connect, and transact with each other without the need for centralised intermediaries.
Neuron's core product is a decentralised service network (DSN). This infrastructure includes a lightweight software development kit (SDK) that allows any machine, from a cloud server to a low-power device, to be onboarded as a "node." The platform also features an Explorer for nodes to discover each other, a Validator network to enforce service level agreements and machine reputation, and a system for automated, token-based payments. A primary use case is 4DSKY, a decentralized air traffic management system for drones, which has been successfully trialed with the UK government.
Neuron's entire platform is built on the Hedera network. It utilises Hedera's fast, secure, and low-cost distributed ledger technology as the foundational trust layer for its DSN. Specifically, Neuron uses Hedera's Consensus and Token Services for several key functions: to log and timestamp flight data from drones, to enable secure M2M payments.

PowerSynch is a digital platform developed by American PowerNet, the first independent company to be granted a power marketer license by the Federal Energy Regulatory Commission (FERC). It specializes in providing direct access to wholesale electricity markets for commercial and industrial clients.
The PowerSynch platform functions as a marketplace for sustainable energy, connecting large-scale buyers directly with renewable energy generators. Its primary service is to facilitate transparent and efficient online transactions for wholesale power, bundled with Renewable Energy Credits (RECs). The platform enables buyers to competitively bid for wholesale blocks of power, offering flexible, short-duration Power Purchase Agreements (PPAs). For sellers, PowerSynch provides a streamlined process to offer their renewable energy to a larger market with the assurance of payment upon delivery. The platform manages the physical delivery of power and provides audit-ready data for environmental reporting.
PowerSynch leverages the Hedera network to ensure the transparency and verifiability of its transactions. The use of Hedera is intended to increase trust in the renewable energy market, prevent double-counting of RECs, and provide a secure, auditable trail for all transactions.
