Tether, the crypto firm behind the USDT (USDT) stablecoin, has added about $1 billion worth in bitcoin (BTC) to its reserves, bringing holdings to $9.7 billion as the supply of its flagship stablecoin rose to nearly $175 billion. Blockchain data by Arkham Intelligence shows that the address tagged as "Tether: Bitcoin Reserves" received 8,889 BTC from a wallet of Bitfinex, the crypto exchange closely associated with Tether. The address currently holds $9.7 billion in BTC based on the current price of about ...