We live in an era in which everything is on the blockchain and there’s a blockchain for everything. From bananas to sex, there’s a token for that and a blockchain to match. There are now over 600 blockchains in existence, with dozens more dreamed up every month via ICOs. Given the current craze for all things blockchain, you might assume that millions of transactions were zipping across distributed ledgers each day. But the reality is very different. Blockchains might be hot, but outside of the big four, nobody’s using them.