El Salvador’s President Nayib Bukele bought another 21 bitcoins on Dec. 21 to mark the 21st day of the last month of the 21st year of the 21st century. Bukele announced the tongue-twisting bitcoin purchase on Twitter on Tuesday night, adding that he made the purchase at exactly 21:00 local time. The president shared a screenshot of the transactions, worth a little more than $1 million, saying, “Got the receipt.” “El Salvador’s entire size is 21,000 km2. Coincidence? I don’t think so,” he also noted. Lawmakers in El Salvador passed legislation in June making bitcoin legal tender alongside the U.S. dollar, with the hopes that it will boost financial inclusion in El Salvador, where around 70 percent of citizens lack access to traditional financial services. The law went into effect on Sept. 7, and requires businesses to accept bitcoin payments on transactions, while Salvadorans will be able to use the digital currency to make tax payments. Meanwhile, Bukele …