MyCitadel is a suite of software, hardware and Internet services focused on digital individual sovereignty and privacy¹.

The main component of the suite is Bitcoin, Lightning and RGB wallet. It enables real-world usage of bitcoin, digital assets and bitcoin finance (#BiFi), including reliable hodling (with inheritance options), corporate & organization use, current accounts with instant Lightning payments, bitcoin staking (through routing, storage, computing, DEX, liquidity pool services provided by Lightning node). Technically it can work with single- and multisig setups, based on hardware, air gapped, cold and server-side hot key storage, involving arbitrary complex time-lock scripts (with miniscript) and wide interoperability (because of use of wallet descriptors). MyCitadel is a taproot-enabled wallet from day one, including multisig- and script-based taproot.

MyCitadel Wallet was the first consumer-facing wallet supporting taproot scripts with timelocks & miniscript, and the first wallet working with RGB smart contracts.

The wallet suite includes the following existing and future consumer-facing apps:

• Desktop app for Linux, Windows and MacOS;
• Mobile app for Apple platforms: MacOS, iOS, iPadOS, which in the future will be extended with watchOS support;
• Android mobile app (work in progress);
• MyCitadel Node - server-side daemon supporting operations in company/organization/multi-device setups and used for running Lightning-based services;
• MyCitadel Box - personal server appliance running MyCitadel Node;
• MyCitadel Cloud - subscription-based cloud service providing MyCitadel Node as a private cloud virtual machine;

Additionally, wallet developers may use Citadel Runtime - a rust-based library providing taproot-, miniscript-, multisig-, lightning & RGB wallet; and languague-specific wrappers for using this library on different platforms: C (libcitadel), Swift for iOS/MacOS (CitadelKit). Other language wrappers are work in progress (CitadelJ for Android, desktop & server-side Java, CitadelWASM, CitadelJS for JavaScriptm PyCitadel for Python).

Web-of-Trust contact managing application using bitcoin & RGB-based digital identity and Lightning network-based key servers instead of legacy WoT infrastructure. Work in progress.

End-to-end ecnrypted chats over Lightning network, using lightning & RGB payments, personal lightning-node-based multi-device synchronization and WoT-based identity & contact management.