Mastering Blockchain - Second Edition

Bitcoin-NG

Another proposal, Bitcoin-NG, which is based on the idea of microblocks and leader election, has gained some attention recently. The core idea is to split blocks into two types, namely leader blocks (also called key blocks) and microblocks:

• Leader blocks: These are responsible for PoW whereas microblocks contain actual transactions.
• Micro blocks: These do not require any PoW and are generated by the elected leader every block-generation cycle. This block-generation cycle is initiated by a leader block. The only requirement is to sign the microblocks with the elected leader's private key. The microblocks can be generated at a very high speed by the elected leader (miner), thus resulting in increased performance and transaction ...