First of all, HACD is an indivisible NFT currency, and is the world’s first purely PoW-based NFT (again, note that Hacash is an invention in 2018), which means that it can be created at no cost by anyone today “NFT works” are different, each HACD is mined through algorithmic calculations, which consumes electricity like HAC and BTC. Each HACD is uniquely marked by an identifier with a length of 6 letters. It is not all 26 English letters that can form the mark, but 16 of them are selected: WTYUIAHXVMEKBSZN (As for why these 16 letters are chosen and the other 10 are discarded One, the author did not find a suitable reason in the white paper, nor did he get the answer in the community discussion, which seems to need to be handed over to future people to study). The number space of the 6-digit identifier formed by the 16-letter permutation and combination is 16 ^ 6 = 16777216, that is, the upper limit of the total amount of HACD is about 16.77 million. Since each HACD is unique and has a 6-letter unique ID as an absolute identifier, this allows centralized exchanges and other institutions to forge false tokens (that is, data smashed or sold beyond The real number of fake coins) has become impossible, and any attempt to modify the upper limit of the number of this currency is technically impossible first, so as to ensure that the wealth stored by everyone is not affected by the financial institutions of certain institutions. Manipulation or damage from community division behavior. And because it is indivisible and cannot be combined, a HACD will always be that one!

For deeper ideas, you may have a look at this article: https://hacashtalk.com/t/why-is-hacd-an-encrypted-asset-which-is-more-scarce-suitable-for-wealth-storage-than-btc/65