Fourth-generation blockchains not only have a wide throughput channel and low TTF (time to finality) but also have some sort of parallelization enabling the ability to ramp up that channel’s throughput. Typical examples of this generation are Polkadot, Avalanche, and Elrond. In this generation of blockchain, the first sharding, that is, the actual parallelization of computation by some parameter, either data or computation, begins to emerge.
