USDC explained: who issues it, what backs it, and how it moves between networks

USDC can sit on Ethereum one moment and on Solana the next, and the way it gets there is different from how most tokens cross between networks. That difference is a big part of what makes USDC worth understanding.

Here’s who issues it, what the issuer says backs it, how the reserves are reported, and what actually happens when USDC moves from one network to another.

Who issues USDC

USDC is issued by Circle, a private-sector financial technology company, through regulated affiliates. According to Circle, businesses with a Circle Mint account deposit US dollars and receive newly issued USDC, which is called minting. When they hand USDC back for dollars, those tokens are taken out of circulation, which is called burning.

Circle Mint is available only to institutions such as exchanges, banks, and large financial firms, not to individuals or small businesses. Everyday users typically get USDC through exchanges, neobanks, and wallets, where the platform supplies the USDC and may mint more through its own account when it needs to.

What backs USDC

According to Circle, USDC is backed 100% by highly liquid cash and cash-equivalent assets and is redeemable 1:1 for US dollars. The majority of the reserve is invested in the Circle Reserve Fund, an SEC-registered government money market fund managed by BlackRock, which can hold cash, short-dated US Treasuries, and overnight Treasury repurchase agreements. The remainder is held as cash at banks.

Circle says it discloses reserve holdings weekly, along with mint and burn flows, and that a Big Four accounting firm provides monthly third-party assurance that reserves exceed the amount in circulation. These are attestations under American Institute of Certified Public Accountants standards, which are snapshots rather than full audits of the reserves. Daily reporting on the money market fund’s portfolio is available through BlackRock.

Reserves held in banks and funds also carry custody risk. In March 2023, about $3.3 billion of USDC’s reserves were held at Silicon Valley Bank when it failed. USDC fell to roughly $0.87 and recovered after US authorities guaranteed the bank’s deposits. The example shows that even a fully backed stablecoin can slip when redemption is blocked.

Where USDC runs

Circle lists the networks where it issues USDC natively, including Ethereum, Solana, Base, Arbitrum, Avalanche, and Polygon, and its list showed 38 networks as of September 2026, with more expected. Each network holds its own separate version of the token, on its own ledger, with its own contract address, and Circle publishes the native contract address for each network.

That list is the reference point for telling versions apart. Circle explains that a bridged version, often labeled USDC.e, is created by third-party platforms rather than by Circle, and that bridging adds risks that native tokens don’t carry. A token labeled USDC on a network outside Circle’s list, or at a different address from the one Circle publishes, isn’t natively issued by Circle.

How USDC moves between networks

USDC can’t simply be sent from one network to another, because each network keeps its own ledger. Circle’s Cross-Chain Transfer Protocol, or CCTP, handles this by burning USDC on the source network and minting the same amount of native USDC on the destination network, without the liquidity pools used by traditional bridges. According to Circle’s documentation, a fast transfer typically takes seconds, while a standard transfer can take many minutes on Ethereum and similar networks, and a fee may be deducted.

There are other routes. Third-party bridges lock USDC on one network and issue a wrapped version on another, which is where the bridged tokens above come from. Or a holder can sell USDC on one network and buy it on another through a platform. Each route has its own fees, timing, and risks, and the transfer usually needs the native coin of the networks involved to pay network fees.

WEEX Reminder: check which version you hold

WEEX reminds users that USDC exists on many networks and in more than one form. Confirm the network on both ends of a transfer, compare the token’s contract address on the network’s explorer with the one Circle publishes, and be careful with bridges and lookalike tokens. Consider a small test transfer for larger amounts, and never share a seed phrase or private key. Nothing here is financial advice.

Conclusion

USDC is a stablecoin issued by Circle, which says it is backed 100% by cash and cash-equivalent reserves and redeemable 1:1 for US dollars. It runs natively on dozens of networks, and Circle’s own protocol moves it between them by burning and minting, rather than by locking it in a bridge. Knowing who issues it, how the reserves are reported, and which version you hold covers most of what matters.

FAQ

1. What is USDC, and who issues it?
USDC is a stablecoin designed to track the US dollar. It is issued by Circle, a private-sector financial technology company, through regulated affiliates.

2. What backs USDC?
According to Circle, USDC is backed 100% by cash and cash-equivalent assets. Most of the reserve is held in a BlackRock-managed government money market fund, and the remainder is cash at banks.

3. Can anyone redeem USDC directly with Circle?
No. Circle Mint, the route for direct redemption, is available only to institutions. Individuals typically use exchanges, wallets, or other platforms to buy and sell USDC.

4. What is the difference between native USDC and bridged USDC?
Native USDC is issued by Circle on each network. Bridged versions, often labeled USDC.e, are created by third parties, and Circle says they add bridge risk that native tokens don’t carry.

5. How does USDC move between networks?
Circle’s CCTP burns USDC on the source network and mints native USDC on the destination network. Third-party bridges and selling on one network and buying on another are other routes, each with its own fees and risks.