Stablecoins · Ethereum mainnet

USDC alerts: every Circle mint, burn and freeze

Circle is the only one who can mint, burn or freeze USDC, and each of those is a public event on its contract. See what the USDC contract logs, open a ready-made rule, and get an alert within seconds of confirmation.

Set up this alert See the ready-made rules

Free on the Beta plan · within seconds of confirmation

Examples

What a USDC alert looks like

Each alert is one event from the token contract, with the amount and the transaction. The amounts are examples; no USD values.

MintExample

250,000,000 USDC

0x7099…79C8

Circle minted 250,000,000 USDC to 0x7099…79C8

Ethereum · USDCMint

BurnExample

120,000,000 USDC

0x15d3…6A65

Circle burned 120,000,000 USDC

Ethereum · USDCBurn

FreezeExample

0x7099…79C8

0x7099…79C8 was blacklisted by Circle (USDC frozen)

Ethereum · USDCBlacklisted

Example alerts. Set up the rule and the real ones reach your chat within seconds of confirmation.

What changes on-chain

Every event for this token

The contract from the issuer's own docs, and the events the ready-made rules catch. Ordinary transfers never reach you.

USD Coin (USDC)

0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

Circle mints USDCMint
New USDC minted by a Circle minter, straight to the address that receives it.
Circle burns USDCBurn
USDC destroyed by a Circle minter when dollars are redeemed.
Circle freezes an addressBlacklisted
The address can no longer send or receive USDC.
Circle unfreezes an addressUnBlacklisted
The address can use USDC again.

Why set it up

Why people watch it

Supply, one event at a time

Every new USDC and every USDC burned, as Circle's minters do it, instead of waiting for daily charts.

Freezes as they happen

See an address blacklisted by Circle when the block is confirmed, not hours later in the news.

Straight from the contract

Each alert is Circle's own on-chain event, with the transaction. No estimates, no opinions.

Explained

What is USDC on Ethereum?

USDC is Circle's dollar stablecoin. On Ethereum it is issued through one proxy contract (0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48), and only Circle can mint new USDC, burn it or freeze an address.

USDC also lives on other chains, such as Solana and Base, each with its own contract, supply and blacklist. This page and its rules cover the Ethereum contract only.

Explained

How Circle mints and burns USDC

Circle authorizes a few minter addresses, each with an allowance, and a minter mints USDC straight to any address. The contract logs a Mint event with the minter, the recipient and the amount, so a USDC alert also shows who received the new tokens.

To burn, the USDC to be redeemed is first sent to a minter in an ordinary transfer. The minter then burns it from its own balance, which logs a Burn event with the minter and the amount.

Explained

How Circle freezes USDC

Circle's USDC contract has its own blacklist, run by a blacklister address Circle controls. A Blacklisted event means the address can no longer send or receive USDC; UnBlacklisted lifts it. USDC has no destroy step: the balance stays frozen in place.

The contract records that a freeze happened, never why.

Ready-made rules

Set it up in one click

Open a rule: the contract, the events and the conditions are filled in. Change the minimum if you like, click Create, and the alerts reach your chat.

Ready-made ruleUSDC mints and burnsCircle issuing new USDC or redeeming it.

Ready-made ruleUSDC blacklist changesAddresses Circle freezes or unfreezes on USDC.

Ready-made rules

Every rule for this contract

Each one opens the add form on this contract with the events and conditions filled in. Sign in, pick your chat and click Create.

EverythingEverything on a contractEvery event a contract emits — full visibility for power users.

TemplateWhale transfersOnly the big transfers of a popular token, above a size threshold.

TemplateToken transfersEvery transfer for an ERC-20 token you care about.

TemplateToken approvalsApprovals granted on a token — unlimited allowances are flagged as a drain risk.

TemplateMints and burnsNew supply minted and supply burned on an ERC-20, such as stablecoin issuance.

TemplateStablecoin blacklistAddresses frozen or unfrozen by the issuer of a stablecoin such as USDC or USDT.

TemplateContract upgradedKnow the moment an upgradeable contract points at new code or changes its admin.

Pick one event

One event, nothing else

The form opens on this contract with that one event picked. Add a condition on its arguments if you like.

Pick one method

Calls to one method

An alert each time someone calls this method on the contract, with its arguments.

How it works

How the alert works

01
Open a ready-made rule: the contract, the events and the conditions are filled in.
02
Sign in, pick the chat the alerts go to and click Create.
03
Within seconds of confirmation, each matching event reaches you, with a link to the transaction.

FAQ

Frequently asked questions

Where does the data come from?

Every alert comes from the token contract's own event on Ethereum mainnet, read within seconds of confirmation, with a link to the transaction on Etherscan. The contract is Circle's USDC proxy, 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48.

Can I get alerts only for large USDC mints?

Yes. Set the same rule for yourself from the template on this page and add a condition, such as a minimum amount or one address. The free Beta plan covers one contract and needs no card. Amounts are in token units, for example 50,000,000 USDC.

Can I get an alert if one specific address is frozen?

Yes. Set the same rule for yourself from the template on this page and add a condition, such as a minimum amount or one address. The free Beta plan covers one contract and needs no card. Add a condition on the address and you get one alert if it is ever frozen or unfrozen.

Does it cover USDC on Solana and other chains?

Ethereum mainnet only. The token also lives on other chains, and each chain has its own contract, supply and blacklist. The rules here cover the Ethereum contract.