A closely-watched fight between the Internal Revenue Service and a popular bitcoin exchange took a new twist last week, as senior Republicans in Congress sent a sharply-worded letter that suggests the tax agency is overstepping its powers.
The letter concerns an IRS investigation into possible tax evasion by customers who use Coinbase, a San Francisco-based company that many people use to buy digital currencies. As part of the investigation, which began last year, officials demanded that Coinbase turn over information for every one of its accounts.
