PANews reported on March 8 that a senior White House official said before today's cryptocurrency summit that after the United States established a strategic reserve of Bitcoin and other digital assets, the first step would be to audit the amount of cryptocurrency held by the government. The person said that after the closure of the cryptocurrency exchange "Silk Road", the United States once had about 400,000 Bitcoins, about half of which had been sold. According to data from research firm Arkham, the United States currently has about $17.5 billion in Bitcoin and about $400 million in several other tokens in its known digital wallets.