Groestlcoin (GRS) is a decentralized cryptocurrency launched in 2014, based on a peer-to-peer model with no need for intermediaries. It operates on a blockchain and is mathematically proof-based, independent of centralized authorities. Groestlcoin is a pioneer in blockchain technology, activating SEGWIT and TAPROOT and enabling Lightning Network for zero-fee transactions, instant payments, scalability, and Atomic Swaps. The hardworking development team releases new features and updates every 3 months, making it one of the most advanced coins. Groestlcoin can be used for electronic payment models, transferable electronically, and instantly, with very small fees.