Tether has just crossed a dizzying threshold: more than $10 billion in profit in just nine months. Behind this extraordinary figure lies the rise of a key player in the crypto ecosystem. Issuer of the USDT, the most used stablecoin in the world, Tether impresses as much as it raises questions. This record profitability, revealed in its latest attestation report, triggers as much enthusiasm as concerns, especially in terms of transparency and regulation.