Open Source C++ Crypto Wallets

Blockstream Green is a free, open-source, noncustodial Bitcoin wallet designed for securely storing, sending, and receiving digital assets. It gives users control over their Bitcoin without requiring a custodial exchange. The desktop application supports Bitcoin and the Liquid Network, including compatible Liquid assets. Users can manage wallet accounts, monitor balances, and review transaction histories. Security capabilities include hardware wallet integration, multisignature account options, and two-factor authentication for supported configurations. It also provides customizable transaction fees, recovery options, and privacy-oriented connection settings. Built with Qt and Blockstream's Green Development Kit, the application is available for Windows, macOS, and Linux, with related mobile applications for Android and iOS.

Trust Wallet Core is an open source, cross-platform, mobile-focused library implementing low-level cryptographic wallet functionality for a high number of blockchains. It is a core part of the popular Trust Wallet, and some other projects. Most of the code is C++ with a set of strict C interfaces, and idiomatic interfaces for supported languages: Swift for iOS and Java for Android. Wallet Core supports more than 50 blockchains, Bitcoin, Ethereum, Binance Chain, and most major blockchain platforms. For new coins, you need to implement address handling and signing functionality in the wallet-core. For new coins on already supported blockchains or variations of already supported blockchains, please consider proper reuse of existing implementation. The Trust Wallet development team is always striving to add more blockchains that will be essential for developers and wallet users. We choose blockchains carefully based on the impact they will have for our community.

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