
Citadel Wallet
Citadel Wallet is a specialized hardware wallet designed to offer robust security and a seamless user experience for individuals interacting with the Hedera Hashgraph network. Its development was supported by HeadStarter's Builder Labs.
It features a full suite of secure storage options focused on providing secure storage and transaction capabilities for Hedera's native cryptocurrency, HBAR, as well as Hedera Token Service (HTS) tokens and non-fungible tokens (NFTs).
The Citadel Wallet device emphasizes high-grade security, incorporating features such as Common Criterial Evaluation Assurance Level 6+ (EAL8+) certified Secure Element and a secure microprocessor featuring Trust Zone technology to protect users' private keys offline.
Citadel Wallet is engineered to support the full spectrum of Hedera network services, including native staking, interaction with smart contracts, and management of various Hedera-based assets. It also features a user-friendly interface and offers both USB-C and secure Bluetooth connectivity for flexible interaction with companion applications and decentralized applications (DApps) within the Hedera ecosystem.
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.

Hedera Coinflip is a decentralized application (dApp) built on the Hedera network that offers a simple, "double or nothing" style betting game. Users can wager HBAR for a 50/50 chance to double their bet. The platform's core value proposition lies in its commitment to transparency and fairness, which is achieved through its unique use of the Hedera Consensus Service (HCS).
The fairness of each flip is guaranteed by a provably fair mechanism that prevents manipulation by either the player or the platform operator. When a user initiates a flip, a combination of a server-provided seed and a client-provided seed is submitted to the Hedera network via HCS. The immutable and unpredictable consensus timestamp assigned to this transaction by the decentralized network is then used to determine the outcome. Because this timestamp cannot be influenced or known in advance, the result of the coin flip is truly random and publicly verifiable.
A small percentage of each wager contributes to a progressive jackpot, which can be won by players who achieve a specific, consecutive number of wins. This jackpot serves as the platform's primary revenue model while also creating an exciting, high-reward target for dedicated players.

Evercity is a Berlin-based company that was founded in 2018. It streamlines and automates the issuance of sustainable finance instruments. The company's primary goal is to make green finance more accessible, transparent, and cost-effective, particularly for small and medium-sized enterprises (SMEs). Its core offering is a green debt and carbon origination platform, a SaaS solution that automates the entire lifecycle of sustainable finance, from structuring and issuance to monitoring and reporting.
The platform integrates with IoT and satellite technology to collect real-world data, which is used to verify the performance of green projects and prevent "greenwashing." A key feature is the ability to issue fully traceable digital assets, including carbon credits and sustainability-linked bonds.
Evercity's platform leverages Hedera Guardian to create a verifiable and immutable record of a project's environmental impact, from initial funding to the final reporting of outcomes, in order to provide trust and transparency to the sustainable finance market.

Australian Payments Plus (AP+) is the national organization responsible for Australia's core payment infrastructure. It was formed by the merger of three key entities: BPAY Group, the operator of the ubiquitous BPAY bill payment service; eftpos, the national debit card system for point-of-sale transactions; and NPP Australia, which runs the New Payments Platform (NPP). In its infrastructure capacity, AP+ processes over 7.5 billion transactions annually and is central to the daily economic activity of the country.
AP+ is also an active researcher organization that is constantly exploring the capabilities of distributed ledger technology and a member of the Hedera Council.
The relationship with Hedera provides AP+ with a framework for developing and testing new solutions that could one day integrate with or enhance its established portfolio of payment services. This involvement complements its research into other future-focused technologies, including its participation in the Reserve Bank of Australia's CBDC pilot program.
