/HAC
PoW Flatcoin 
The first cryptocurrency to achieve both decentralization and money supply regulation to achieve purchasing power.
PoW-flatcoin

/HACD
PoW NFT and PoW Generative Art
The first NFT and generative art using the Bitcoin PoW mechanism.
PoW-NFT

https://github.com/hacash/doc/blob/main/tech/x16rs_algorithm_description.md
X16RS
Similar to the X16R algorithm, but completely different mining algorithm, anti-ASIC.
X16RS

https://github.com/hacash/doc/blob/main/HIP/protocol/PoW_of_avoid_51_percent_attack.md
Beacon Tower Protocol
The PoW project first faced the security problem of 51% attack, and Hacash used the Beacon tower protocol to prevent 51% attack.
51tower