Circle Internet Financial has released an attestation report from Grant Thornton LLP, confirming that as of December 31, 2020, the circulating supply of USD Coin (USDC) was 4,008,397,398 tokens, backed by $4,011,270,692 in US dollar reserves held in custody accounts. The report assures that the number of issued USDC tokens does not exceed the US dollar reserves, ensuring transparency and trust in USDC's backing. Grant Thornton LLP provides these reports on a monthly basis to maintain accountability, with Circle continuing to innovate in digital finance to enhance global economic accessibility and efficiency.