[Tether CEO: Bitcoin on-chain users reach 571.2 million, USDT approximately 550 million] Tether CEO Paolo Ardoino cited data from Chainalysis and Artemis, stating that as of Q4 2025, the total number of Bitcoin on-chain users reached 571.2 million, with a quarterly increase of over 10 million; the user base of USDT is slightly lower than Bitcoin, approximately 550 million, but the quarterly increase exceeds 30 million.