Mr. Trump's promise to ensure that all remaining bitcoins are "made in America" should be one of the least likely to materialise. Industry insiders widely agree that Mr. Trump's promise is seen more as symbolic support for the cryptocurrency industry and is virtually impossible to realise in practice. Because the blockchain is a decentralized network, no one controls or is banned from participating in the process. US-based miners still have far less than half of the global total, making it all but impossible for US companies to support the entire Bitcoin network. Ethan Vera, chief operating officer of Luxor Technology, a Seattle-based company that provides software and services to miners, said: "It's Trumpian rhetoric, but it's definitely not reality."