Blockchain Life 2017 conference in St Petersburg, Russia [Getty Images]

ST PETERSBURG, RUSSIA - SEPTEMBER 26, 2017: A stand of the BitClave search engine at Blockchain Life 2017, a conference on bitcoin, blockchain, and cryptocurrency, at the Lenexpo exhibiton centre. Alexander Demianchuk/TASS (Photo by Alexander Demianchuk\TASS via Getty Images)

TASS Alexander Demianchuk