Columnist Pat Beall draws a line from meme coins like $TRUMP, named for the president, and PNUT, named for a deceased squirrel, to the tulip mania that enthralled and eventually broke the 17th

Just before assuming office as the 47th president of the United States, Donald Trump introduced his meme coin – $Trump. The digital token attracted lots of attention, and a couple of days after its launch the combined value of the coins was nearly US$8.5 billion (£6.9 billion).

Trump's crypto tokens are raising ethical and geopolitical concerns--and are worrying even Trump's staunchest pro-crypto supporters