Byteball Bytes (GBYTE)
Byteball is a decentralized database with it's own native cryptocurrency, Bytes, that unlike most does not require PoW or PoS mining and does not have a blockchain nor blocks. Instead, Byteball links transactions by signing the hashes from the previous transactions on the new one. These links between transactions form a DAG (Directed Acyclic Graph). Since Byteball has no blocks, there is no block size issue.