RSK is the first open source Smart Contract platform secured by the Bitcoin Network. RSK adds value and expand functionality to the Bitcoin ecosystem by. The Lightning Network is a "Layer 2" payment protocol that operates on top of a blockchain-based cryptocurrency (like Bitcoin). On March 15, , Lightning Labs CEO Elizabeth Stark announced the initial release of lnd beta for. 10+. Contributions to many open-source projects. Bitcoin Core; Ethereum; Monero; Zcash; MicroPython. Visit SatoshiLabs GitHub.