mempool.space data shows that the Bitcoin network transaction fee has soared to more than 400 Satoshi/byte, with medium priority temporarily reporting 430 Satoshi/byte and high priority temporarily reporting 610 Satoshi/byte. The reason is that the new rune MEMENTO • MORI deployed by Casey, the founder of Ordinals, will be minted at block height 868186. The total number of rune is 100 million, and 50% is reserved.