The author, known only as @Bitfinexed, declines to identify himself, saying he’s worried about his safety. Since April, he’s accused Bitfinex and Tether of wrongdoing.
Bloomberg News reported last week that US regulators sent subpoenas to Bitfinex and Tether on Dec 6.
An army of bots was to blame, the person behind the account said in a phone interview Wednesday. He had more than 400,000 followers but blocked about 300,000 of them due to constant spam and threats.
He said he removed 20 tweets on Tuesday at the request of Twitter, only to be suspended. Hours later, the account was restored. A Twitter spokesperson said the freeze was a mistake.
Tether’s coins have become a popular substitute for US dollars on cryptocurrency exchanges worldwide, with about US$2.2 billion of the tokens outstanding.
While Tether has said all of its coins are backed by US dollars held in reserve, the company has yet to provide conclusive evidence of its holdings to the public or have its accounts audited.
Skeptics such as @Bitfinexed have questioned whether the money is really there.