This May 12, 2021, file photo shows an advertisement for the cryptocurrency Bitcoin displayed on a tram in Hong Kong. Cryptocurrency executives went to Capitol Hill on Dec. 8, 2021, to say their fast-growing industry understands more regulation is likely coming, but they don't want it to squelch the next wave of the internet or send it offshore to other countries. (AP Photo/Kin Cheung, File) **FILE**
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