To learn the details about Ethash and the way it functions first, you have to know the initial version, known as Dagger-Hashimoto. The two primary features of Dagger-Hashimoto include (i) ASIC resistance and (ii) extremely reliable and easily verified.

Two of the above mentioned elements determine the Dagger-Hashimoto operation. Dagger-Hashimoto is a combination of two algorithms. The dagger algorithm was invented in the hands of Vitalik Buterin The Hashimoto algorithm was created through Thaddeus Dryja. It employs direct acrylic graphs (DAG) to create massive data structures. While the structure had more than 1GB of storage space, it now requires 4 to 5 GB.

The DAG structure permits a set of memory-based calculations to be performed that can add an extra amount of work. Additionally, the structure allows the Hashimoto algorithm to execute efficiently in mining. The Hashimoto algorithm also adds ASIC resistance during processing hash function mining. This is accomplished by causing it to use the capacity to consume a lot of RAM since this is the limitation of ASICs.