What if bitcoin went to zero?

THE RECENTGDP expansion of the crypto-universe is a thing of wonder. Only a year ago there were about 6,000 currencies listed on CoinMarketCap, a website. Today there are 11,145. Their combined market capitalisation has exploded from $330bn to $1.6trn today—roughly equivalent to the nominal of Canada. More than 100m unique digital wallets hold them, about three times the number in 2018.