The first HACD NHMYYM mined out on May 16,2019
When HACD was first mined out, it was almost unknown. Later, as word of mouth spread step by step, the core community began to trade, and the transaction price gradually increased from 1USDT to 10U, 20U, and later 50U. Up to now, the transaction price of an ordinary HACD is around 150U. While the highest transaction price of a pure royal blue diamond is 47,000 USDT, which exceeds the market price of BTC in the same period. The scale of computing power and the number of community collectors are also expanding, slowly but surely.


https://nfthours.com/13-reasons-why-the-historic-pow-nft-hacash-diamond-a-worthy-collectible/