Crypto Gloss

USDC

USDC (USD Coin) is a US dollar-pegged stablecoin issued by Circle Internet Financial and co-launched with Coinbase in 2018, operating under the Centre Consortium framework (now fully Circle-managed). Unlike Tether (USDT) — which is offshore-domiciled with historically opaque reserves — USDC was explicitly designed for the regulated financial system: reserves held at US-regulated financial institutions, attested by a Big Four accounting firm (Deloitte), licensed as a money service business, and structured to be compatible with future US stablecoin legislation. With a circulating supply of approximately $25-35 billion (2024), USDC is the second-largest stablecoin by market cap, having ceded ground from its near-parity with USDT in late 2022 following the SVB banking crisis of March 2023 (when Circle disclosed $3.3B of USDC reserves were held at Silicon Valley Bank, briefly depegging USDC to $0.87). USDC has deep integration in the DeFi ecosystem — preferred by protocols like Aave, Compound, and Curve because of its audited reserves and regulatory standing — and has become the primary stablecoin for institutional cross-border payments and B2B transactions through Circle’s infrastructure (CCTP — Cross-Chain Transfer Protocol). Through the Circle Payments Network and CCTP, USDC enables near-instant, low-cost dollar transfers across blockchains for businesses and financial institutions.

Key Facts

  • Issued by: Circle Internet Financial (formerly Centre Consortium with Coinbase)
  • Launched: 2018
  • Peg: 1 USDC = $1.00 USD
  • Circulating supply: $25-35B (2024)
  • Primary blockchains: Ethereum, Base, Solana, Arbitrum, Polygon, and others
  • Audit: Deloitte (annual); monthly attestations
  • Reserves: US Treasury bills + cash at US-regulated banks

Reserve Structure

USDC’s full reserve composition (2024):

  • ~90-95%: Short-duration US Treasury bills (held in Circle Reserve Fund at BlackRock)
  • ~5-10%: Cash held at banks (United States, primarily Bank of New York Mellon, Customers Bank)
  • 0%: Commercial paper, crypto, or other non-US-dollar assets
  • Audit: Annual by Deloitte (independent CPA firm)
  • Monthly: Attestation letters confirming reserve adequacy

The SVB Crisis and Its Impact

The defining event for USDC’s reputation:

March 2023 timeline:

  • March 9: Silicon Valley Bank (SVB) bank run begins
  • March 10: SVB seized by FDIC
  • March 11 (Saturday): Circle disclosed $3.3B of reserves held at SVB
  • March 11: USDC depeg begins — drops to $0.87 at lows
  • March 13 (Monday): FDIC announced full depositor protection for SVB
  • March 13: USDC repegs to $1.00

Market impact:

  • USDC market cap: $44B before SVB → $25-28B by June 2023
  • USDT: gained market share during USDC weakness
  • Lesson: “regulatory compliance” exposed USDC to traditional banking risk that offshore Tether avoided

CCTP: Cross-Chain Transfer Protocol

Circle’s cross-chain infrastructure for USDC:

  • What it is: Protocol enabling native USDC burning on one chain and minting on another
  • No bridges: CCTP burns USDC on source chain, Circle mints new USDC on destination
  • Zero bridge hack risk: No locked assets to steal (unlike wrapped USDC bridges)
  • Speed: Minutes (limited by destination chain finality)
  • Cost: Gas only (no bridge fee)
  • Impact: Positions USDC as the interchain dollar standard

Related Terms

Sources

  1. “Circle’s USDC: The Regulated Stablecoin’s Strategic Position” — Delphi Digital / Stablecoin Research (2023-2024). Analysis of how Circle designed USDC for regulatory compatibility from inception — examining the reserve structure, compliance infrastructure, Deloitte audit relationship, state licensing, and how this positions USDC to benefit from US stablecoin legislation that would disadvantage offshore competitors like USDT.
  1. “SVB and USDC: How the Banking Crisis Revealed Stablecoin Risk” — The Block / Stablecoin Risk Research (2023). Detailed analysis of the March 2023 USDC depeg event — examining the timeline, how Circle’s reserve structure created exposure to SVB’s failure, what the depeg revealed about the hidden risks in “transparent” stablecoin reserves, how Circle managed communication during the crisis, and the lasting impacts on USDC’s market position and reserve management strategy.
  1. “USDC in DeFi: Why Protocols Prefer Transparency” — Bankless / DeFi Protocol Research (2023-2024). Analysis of why DeFi protocols — particularly lending protocols like Aave, Compound, and Maker — have gravitated toward USDC over USDT for their stablecoin reserves and collateral pools, examining the security assumptions, risk framework, governance decisions, and what the concentration of USDC in DeFi means for systemic risk.
  1. “Circle’s Business Model and USDC Revenue” — Messari / Stablecoin Economics (2023-2024). Analysis of Circle’s revenue model — how USDC generates revenue (reserve yield), expenses (operational, compliance), Circle’s IPO history (SPAC attempt collapsed, direct listing considerations), and what USDC’s competitive economics look like versus Tether given Circle’s higher compliance overhead but also potentially higher addressable market if regulation favors compliant issuers.
  1. “CCTP and the Future of Cross-Chain Dollar Settlement” — DeFi Llama / Cross-Chain Research (2024). Technical and market analysis of Circle’s Cross-Chain Transfer Protocol (CCTP) — examining how it differs from traditional bridge architectures, the security advantages of burn-and-mint vs. lock-and-mint, adoption metrics across chains, and the competitive implications of Circle controlling the canonical USDC cross-chain transfer mechanism.