
Turtlemoon
Turtle Moon is a Web3 software development and solutions company that functions as a core infrastructure builder for the Hedera ecosystem. It focuses on creating open-source tools, services, and standards that empower developers and accelerate the growth of decentralized applications on the Hedera network.
One of Turtle Moon's most significant contributions is the creation of the HCS-20 standard, a framework for issuing and managing fungible tokens using the Hedera Consensus Service (HCS). This standard provided an efficient, low-cost alternative to smart contracts for tokenization. They have also developed and open-sourced a suite of "Turtle Moon Tools" for NFT minting and management, making it easier for creators to launch projects on the network.
Beyond infrastructure, Turtle Moon is an active participant in the Hedera community, closely associated with leading the technical development for projects like HGraph Punks. By developing foundational protocols, open-sourcing their tools, and building applications, Turtle Moon plays a vital role in making the Hedera network more accessible, functional, and robust for developers and users alike.
Project Information
Related Projects

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.

Curios is a creator-focused platform designed to overhaul digital content distribution by enabling creators to sell their work directly to fans while retaining 100% of their sales revenue. The platform supports a wide array of digital content, including music, audiobooks, ebooks, videos, comedy works, digital artwork, and event sales and ticketing.
It offers a direct purchasing model for fans allowing them to buy and permanently own content without recurring subscription fees. Fans can consume owned content via the Curios website or mobile apps, both of which support offline access. Curios emphasizes a transparent connection where creators own their fan data and intellectual property while maintaining compliance with the EU’s General Data Protection Regulation (GDPR).
The Curios platform provides tools for NFT creation and sales, cross-platform smart contract deployment, and white-label marketplace solutions. This allows creators to offer verifiably unique items and engage fans with unlockable content and secure airdrops. It also provides increased accessibility by enabling NFT purchases with fiat currency and traditional credit cards.

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.
W3C Decentralised Identifiers (DIDs) are a new type of globally unique identifier designed to enable verifiable, decentralised digital identity. As a formal web standard published by the World Wide Web Consortium (W3C), the DID architecture is a foundational component for building a more secure and user-centric internet.
Unlike traditional identifiers such as email addresses or usernames, DIDs are not tied to any centralised registry or company. This means that individuals and organisations can create and control their own identifiers, giving them "self-sovereign" control over their digital identities. The core of the system is the DID Document, a JSON file that contains the cryptographic keys and service endpoints associated with a DID. This document is stored on a distributed ledger or other decentralised network, allowing for secure and verifiable interactions.
The Hedera Consensus Service (HCS) is used to create a tamper-proof and auditable log of all DID-related events, such as creation, updates, and revocation.
