{"investigation":{"slug":"usd-coin-usdc","entity_name":"USD Coin (USDC)","trust_score":74,"severity_base":null,"score_modifier":0,"confidence":0.85,"status":"published","content_type":"investigation","summary":"USD Coin (USDC) is a US dollar-pegged stablecoin issued by Circle Internet Group, Inc., launched in September 2018 initially under the Centre Consortium co-founded with Coinbase, which was dissolved in August 2023 leaving Circle as sole issuer. USDC maintains full-reserve backing in cash and short-dated US Treasuries, publishes monthly third-party attestations, and is the first major stablecoin issuer to achieve compliance with both the US GENIUS Act and the EU's MiCA regulatory framework. Key risk factors include a documented depeg event in March 2023 linked to Silicon Valley Bank exposure, inherent centralization risks from Circle's contractual ability to freeze or blacklist addresses, and emerging competitive pressure from the Open USD consortium scheduled to launch in late 2026.","sections":[{"content":"USD Coin (USDC) was announced by Circle Internet Group on May 15, 2018, and launched in September 2018 under the Centre Consortium, a joint venture between Circle and Coinbase. Centre served as the governance body overseeing the stablecoin's standards and policies. In August 2023, Circle and Coinbase dissolved the Centre Consortium, citing improved regulatory clarity for stablecoins in the US and globally. Coinbase acquired a minority equity stake in Circle at that time, and Circle became the sole issuer and governance authority for USDC. Circle Internet Group, Inc. (NYSE: CRCL) subsequently completed an IPO on June 5, 2025, listing on the New York Stock Exchange at $31 per share, raising approximately $583 million in net proceeds, and is now subject to SEC reporting obligations including quarterly 10-Q and annual 10-K filings.","heading":"Background and Governance","sources":[{"url":"https://www.cnbc.com/2023/08/22/coinbase-takes-stake-in-stablecoin-firm-circle-shuts-down-usdc-consortium.html","name":"Coinbase takes stake in stablecoin firm Circle, shuts down USDC consortium — CNBC","type":"news_article","credibility":1},{"url":"https://www.nasdaq.com/press-release/circle-reports-fourth-quarter-and-full-fiscal-year-2025-financial-results-2026-02-25","name":"Circle Reports Fourth Quarter and Full Fiscal Year 2025 Financial Results — Nasdaq","type":"official","credibility":1}],"severity":"low"},{"content":"Each USDC token is designed to be redeemable 1:1 for one US dollar. Circle holds reserves primarily in the Circle Reserve Fund (ticker: USDXX), a SEC-registered government money market fund managed by BlackRock, composed of cash and short-dated US Treasury securities. Custody is provided by BNY Mellon. Circle publishes monthly third-party reserve attestations prepared under AICPA agreed-upon-procedures standards. As of 2025, attestations have been conducted by Grant Thornton LLP following an earlier period when Deloitte & Touche LLP served in that role. BlackRock makes daily portfolio-level reporting for the Reserve Fund publicly available, providing more frequent transparency than monthly attestation alone. Analysts and critics note that attestations are not full audits: they confirm reserve balances at a stated point in time but do not opine on internal controls, operational risk at custodian banks, historical accuracy, or future solvency. Circle discloses this distinction explicitly in its attestation reports.","heading":"Reserve Structure and Transparency","sources":[{"url":"https://www.spark.money/research/stablecoin-reserve-transparency-audit","name":"Stablecoin Reserve Transparency: What Monthly Attestations Actually Prove (and Don't) — Spark Money","type":"research","credibility":2},{"url":"https://eco.com/support/en/articles/15182152-usdc-reserves-and-how-to-verify-them-in-2026","name":"USDC Reserves and How to Verify Them in 2026 — Eco","type":"other","credibility":2},{"url":"https://coinpaprika.com/education/usdc-deep-dive/","name":"USDC Deep Dive: Circle's Bet on Regulation as a Moat — CoinPaprika","type":"research","credibility":2}],"severity":"low"},{"content":"On March 10–11, 2023, USDC broke its 1:1 dollar peg following Circle's disclosure that approximately $3.3 billion of USDC reserves — roughly 8% of total reserves at the time — were held in deposit accounts at Silicon Valley Bank (SVB), which had been closed by the California Department of Financial Protection and Innovation on March 10. On secondary markets, USDC fell to as low as approximately $0.87 over the weekend of March 11–12. Circle CEO Jeremy Allaire publicly stated that Circle stood behind USDC and that deposits were secure. On the evening of Sunday, March 12, the US Treasury and the FDIC announced full protection of SVB depositors, including amounts above the FDIC insurance cap. USDC returned to its $1.00 peg within approximately three days following these assurances. The episode did not result in any losses to USDC holders; all redemptions were honored at full value once banking operations resumed. The event exposed the systemic vulnerability of stablecoins holding reserves at single banking counterparties, and Circle subsequently restructured reserve custodianship to reduce concentration at any single bank.","heading":"March 2023 Depeg Event — Silicon Valley Bank Exposure","sources":[{"url":"https://www.cnbc.com/2023/03/11/stablecoin-usdc-breaks-dollar-peg-after-firm-reveals-it-has-3point3-billion-in-svb-exposure.html","name":"Stablecoin USDC breaks dollar peg after Circle discloses exposure to Silicon Valley Bank — CNBC","type":"news_article","credibility":1},{"url":"https://decrypt.co/123211/usdc-stablecoin-depegs-90-cents-circle-exposure-silicon-valley-bank","name":"USDC Stablecoin Falls to 87 Cents After Circle Discloses Exposure to Silicon Valley Bank — Decrypt","type":"news_article","credibility":2},{"url":"https://finance.yahoo.com/news/explaining-silicon-valley-bank-fallout-115755812.html","name":"Explaining the Silicon Valley Bank Fallout and USDC De-Peg — Yahoo Finance","type":"news_article","credibility":2}],"severity":"high"},{"content":"Circle's USDC smart contracts include an on-chain blacklisting function (Blacklistable.sol) that enables Circle to freeze USDC held at any address, preventing token transfers while leaving the balance visible on-chain. As of the time of investigation, Circle has frozen approximately 372 addresses aggregating roughly $110 million in USDC. Circle's stated policy is to exercise this capability only in response to a court order, regulatory sanctions designation, or documented law enforcement request. Critics within the crypto community argue that this functionality introduces meaningful counterparty and censorship risk, making USDC fundamentally unlike permissionless, censorship-resistant assets. In 2026, at least one freeze event by Circle, details of which were not fully publicly disclosed, prompted renewed community debate about transparency in how civil legal requests result in on-chain freezes. In August 2022, Circle froze approximately $75,000 in USDC linked to addresses associated with Tornado Cash immediately after OFAC sanctioned the mixing protocol; Circle CEO Jeremy Allaire characterized the compliance decision as presenting a 'moral quandary' given that OFAC had sanctioned open-source software. Circle subsequently unfroze at least one of the 16 Tornado Cash-linked wallets it had initially frozen following community backlash and legal uncertainty about the scope of the sanctions.","heading":"Centralization Risk and Address Freezing Capabilities","sources":[{"url":"https://www.theblock.co/post/162172/circle-freezes-usdc-funds-in-tornado-cashs-us-treasury-sanctioned-wallets","name":"Circle freezes USDC funds in Tornado Cash's US Treasury-sanctioned wallets — The Block","type":"news_article","credibility":2},{"url":"https://crypto.news/circles-16-wallet-usdc-freeze-revives-centralization-and-blacklist-debate/","name":"Circle's 16-wallet USDC freeze revives centralization and blacklist debate — Crypto.news","type":"news_article","credibility":2},{"url":"https://www.coinspeaker.com/circle-unfreezes-blacklisted-usdc-crypto-wallet-backlash/amp/","name":"Circle Unfreezes One of 16 Blacklisted USDC Crypto Wallets Following Backlash — CoinSpeaker","type":"news_article","credibility":2},{"url":"https://blog.amlbot.com/stablecoin-freezes-2023-2025-a-data-backed-analysis-of-usdt-vs-usdc-by-amlbot/","name":"Stablecoin Freezes 2023–2025: Data Analysis of USDT vs USDC — AMLBot","type":"research","credibility":2}],"severity":"medium"},{"content":"USDC's issuer, Circle, has pursued an aggressive regulatory compliance posture and achieved several notable milestones. On July 1, 2024, Circle's French subsidiary Circle Mint France SAS received an Electronic Money Institution license from France's Autorité de Contrôle Prudentiel et de Résolution (ACPR), making Circle the first major global stablecoin issuer to achieve compliance with the EU's Markets in Crypto-Assets (MiCA) regulation. The license covers both USDC and EURC across all 27 EU member states under MiCA's passporting provisions. In the United States, the GENIUS Act (P.L. 119-27), the first federal law specifically regulating stablecoins, was signed on July 18, 2025. USDC's existing reserve structure and attestation practices were already compliant with the GENIUS Act's requirements at the time of enactment. On July 10, 2026, the Office of the Comptroller of the Currency (OCC) granted Circle final approval to establish First National Digital Currency Bank, N.A., operating as Circle National Trust, placing Circle's reserve custody and digital asset services under direct federal banking supervision. Circle's IPO in June 2025 also subjects the company to ongoing SEC disclosure obligations.","heading":"Regulatory Status and Licensing","sources":[{"url":"https://www.cnbc.com/2024/07/01/eu-mica-law-crypto-firm-circle-gets-french-license-for-stablecoin.html","name":"EU MiCA law: Crypto firm Circle gets French license for stablecoin — CNBC","type":"news_article","credibility":1},{"url":"https://www.congress.gov/crs-product/IN12553","name":"GENIUS Act — Congress.gov CRS Product","type":"regulatory","credibility":1},{"url":"https://www.businesswire.com/news/home/20260710400969/en/Circle-Receives-Final-OCC-Approval-to-Establish-National-Trust-Bank","name":"Circle Receives Final OCC Approval to Establish National Trust Bank — BusinessWire","type":"official","credibility":1},{"url":"https://fintech.global/2026/07/10/circle-wins-occ-approval-for-national-trust-bank/","name":"Circle Wins OCC Approval for National Trust Bank — Fintech Global","type":"news_article","credibility":2}],"severity":"low"},{"content":"The USDC token smart contract has been audited by multiple security firms. A April 2023 audit conducted by Callisto Network found zero high-severity and zero medium-severity issues, with one low-severity finding and four noted owner privileges (including the blacklisting capability). No critical smart contract vulnerabilities have been publicly attributed to the USDC contract itself. USDC has been exposed to losses through exploits of third-party infrastructure. Notably, the February 2022 Wormhole bridge exploit on Solana involved approximately $4 million in USDC among approximately $326 million in total assets drained; however, USDC itself was not the vulnerable component. The Ronin Network bridge exploit in March 2022, attributed to North Korea's Lazarus Group, resulted in the theft of 25.5 million USDC among other assets, again through bridge infrastructure rather than the USDC contract. Circle's deployment of USDC natively across 30 blockchains as of early 2026 introduces third-party bridge and cross-chain infrastructure risk that is outside Circle's direct control.","heading":"Smart Contract Security","sources":[{"url":"https://callisto.network/usdc-token-security-audit-report/","name":"USDC (USD Coin) Smart Contract Audit Report — Callisto Network","type":"research","credibility":2},{"url":"https://crypto.news/how-cross-chain-bridges-work-and-why-4-billion-has-been-stolen-from-them/","name":"How cross-chain bridges work and why $4 billion has been stolen from them — Crypto.news","type":"news_article","credibility":2}],"severity":"low"},{"content":"As of September 2026, USDC had approximately $73.4 billion in circulating supply, making it the second-largest stablecoin globally behind Tether's USDT at approximately $183.3 billion. Despite the supply gap, USDC accounted for approximately 70% of adjusted stablecoin transaction volume in the first half of 2026, according to CoinDesk reporting, with Tether's USDT at approximately 25%. Circle reported full-year 2025 revenue and reserve income of $2.7 billion, a 64% increase year-over-year, with $75.3 billion USDC in circulation at year-end representing 72% growth. In July 2026, CoinShares identified Open USD (OUSD) — a yield-sharing stablecoin consortium backed by over 140 entities including Visa, Stripe, Mastercard, BlackRock, and Coinbase — as a significant competitive threat to USDC's business model. Unlike USDC, Open USD plans to distribute reserve yield to participating businesses rather than retaining it for the issuer. Open USD had not launched as of October 2026. Circle shares fell more than 17% on the day Open USD was announced, though CoinShares noted the decline may have been amplified by technical index-rebalancing selling.","heading":"Market Position and Competitive Risks","sources":[{"url":"https://www.coindesk.com/business/2026/07/15/open-usd-poses-biggest-threat-yet-to-circle-s-usdc-coinshares-says","name":"Open USD poses new threat to Circle by challenging USDC's core business model, CoinShares says — CoinDesk","type":"news_article","credibility":2},{"url":"https://www.coindesk.com/business/2026/07/06/circle-s-usdc-is-leaving-tether-behind-in-the-stablecoin-volume-race","name":"Circle's USDC is leaving Tether behind in the stablecoin volume race — CoinDesk","type":"news_article","credibility":2},{"url":"https://www.circle.com/pressroom/circle-reports-fourth-quarter-and-full-fiscal-year-2025-financial-results","name":"Circle Reports Fourth Quarter and Full Fiscal Year 2025 Financial Results — Circle Pressroom","type":"official","credibility":1}],"severity":"medium"},{"content":"USDC has achieved broad adoption among institutional payment networks and financial infrastructure providers. Visa, Mastercard, BNY Mellon, BlackRock, and Stripe have publicly disclosed production-level USDC integrations. USDC is natively issued on more than 30 blockchains as of February 2026. Circle's Cross-Chain Transfer Protocol (CCTP) enables native burning and minting of USDC across supported chains, reducing reliance on wrapped-token bridges. USDC is widely used as a settlement asset in decentralized finance protocols and as the base asset in numerous centralized exchange trading pairs globally.","heading":"Institutional Adoption and Infrastructure","sources":[{"url":"https://eco.com/support/en/articles/10944149-what-is-usdc-circle-s-regulated-digital-dollar-in-2026","name":"What Is USDC? Circle's Regulated Digital Dollar in 2026 — Eco","type":"other","credibility":2}],"severity":"low"}],"timeline":[{"date":"2018-09-01","event":"USDC launched by the Centre Consortium, a joint venture between Circle and Coinbase, on the Ethereum blockchain.","source":"CNBC","source_url":"https://www.cnbc.com/2023/08/22/coinbase-takes-stake-in-stablecoin-firm-circle-shuts-down-usdc-consortium.html"},{"date":"2022-08-08","event":"OFAC sanctions Tornado Cash. Circle freezes approximately $75,000 in USDC linked to sanctioned addresses within hours; Circle CEO describes the compliance action as presenting a 'moral quandary.'","source":"The Block","source_url":"https://www.theblock.co/post/162172/circle-freezes-usdc-funds-in-tornado-cashs-us-treasury-sanctioned-wallets"},{"date":"2023-03-10","event":"California regulators close Silicon Valley Bank. Circle discloses $3.3 billion in USDC reserves held at SVB. USDC falls to approximately $0.87 on secondary markets.","source":"CNBC","source_url":"https://www.cnbc.com/2023/03/11/stablecoin-usdc-breaks-dollar-peg-after-firm-reveals-it-has-3point3-billion-in-svb-exposure.html"},{"date":"2023-03-13","event":"Following FDIC announcement of full depositor protection at SVB, USDC returns to its $1.00 peg. No holder losses are recorded.","source":"Decrypt","source_url":"https://decrypt.co/123211/usdc-stablecoin-depegs-90-cents-circle-exposure-silicon-valley-bank"},{"date":"2023-08-21","event":"Circle and Coinbase dissolve the Centre Consortium. Coinbase acquires a minority equity stake in Circle. Circle becomes the sole issuer and governance authority of USDC.","source":"CNBC","source_url":"https://www.cnbc.com/2023/08/22/coinbase-takes-stake-in-stablecoin-firm-circle-shuts-down-usdc-consortium.html"},{"date":"2024-04-01","event":"Circle files S-1 registration statement with the SEC in preparation for an initial public offering.","source":"Yahoo Finance","source_url":"https://finance.yahoo.com/news/circle-internet-reports-66-revenue-121008246.html"},{"date":"2024-07-01","event":"Circle's French entity, Circle Mint France SAS, receives an Electronic Money Institution license from the ACPR, making Circle the first major stablecoin issuer to achieve MiCA compliance across the EU.","source":"CNBC","source_url":"https://www.cnbc.com/2024/07/01/eu-mica-law-crypto-firm-circle-gets-french-license-for-stablecoin.html"},{"date":"2025-06-05","event":"Circle Internet Group, Inc. lists on the New York Stock Exchange (ticker: CRCL) at $31 per share, raising approximately $583 million in net proceeds.","source":"Nasdaq","source_url":"https://www.nasdaq.com/press-release/circle-reports-fourth-quarter-and-full-fiscal-year-2025-financial-results-2026-02-25"},{"date":"2025-07-18","event":"The GENIUS Act (P.L. 119-27) is signed into law in the United States, establishing the first federal stablecoin regulatory framework. USDC's existing structure is already compliant.","source":"Congress.gov","source_url":"https://www.congress.gov/crs-product/IN12553"},{"date":"2026-02-06","event":"USDC is reported to be natively deployed across 30 blockchains.","source":"Eco","source_url":"https://eco.com/support/en/articles/10944149-what-is-usdc-circle-s-regulated-digital-dollar-in-2026"},{"date":"2026-07-10","event":"Circle receives final OCC approval to establish First National Digital Currency Bank, N.A. (operating as Circle National Trust), placing the company under direct federal banking supervision.","source":"BusinessWire","source_url":"https://www.businesswire.com/news/home/20260710400969/en/Circle-Receives-Final-OCC-Approval-to-Establish-National-Trust-Bank"},{"date":"2026-07-13","event":"CoinShares publishes analysis identifying Open USD, a yield-sharing stablecoin backed by 140+ firms including Visa, Stripe, and Coinbase, as the most credible competitive threat to USDC since its inception. Circle shares fall over 17% on the day of announcement.","source":"CoinDesk","source_url":"https://www.coindesk.com/business/2026/07/15/open-usd-poses-biggest-threat-yet-to-circle-s-usdc-coinshares-says"}],"sources_used":[{"url":"https://www.cnbc.com/2023/03/11/stablecoin-usdc-breaks-dollar-peg-after-firm-reveals-it-has-3point3-billion-in-svb-exposure.html","name":"Stablecoin USDC breaks dollar peg after firm reveals it has $3.3 billion in SVB exposure — CNBC","type":"news_article","archive_url":"http://web.archive.org/web/20261001212144/https://www.cnbc.com/2023/03/11/stablecoin-usdc-breaks-dollar-peg-after-firm-reveals-it-has-3point3-billion-in-svb-exposure.html","credibility":1,"archive_timestamp":"2026-10-01T21:21:44+00:00"},{"url":"https://www.cnbc.com/2023/08/22/coinbase-takes-stake-in-stablecoin-firm-circle-shuts-down-usdc-consortium.html","name":"Coinbase takes stake in stablecoin firm Circle, shuts down USDC consortium — 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