Alephium

Alephium is an operational sharded L1 blockchain that scales and enhances PoW and UTXO concepts. It is built on a novel and complete sharding algorithm called BlockFlow, which improves on the UTXO model of BTC to make it scalable. Additionally, Alephium uses a DAG data structure to reach consensus between different shards, allowing up to 10,000 Transactions Per Second.