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Circle

Stablecoin issuerwww.circle.comQuantum-safe path available on Algorand
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Tracked value
$632.8K
21 sourced addresses on 8 chains
Exposed
$3.1K
0.5% of value on scanned chains
Not yet exposed
$3.8
keys never used
Quantum-safe
$0.0
nothing moved yet

If a key-breaking machine existed tomorrow

From the addresses and keys we track. Not a prediction of when.
$3.1K
could be moved out at once
8 wallets behind visible keys
$3.8
attackable at the next spend
1 wallets with hidden keys
$60B
of supply could be minted, frozen or blacklisted
USDC on Ethereum, USDC on Base, USDC on Arbitrum
$0.0
out of reach
nothing quantum-safe yet
  • Base0x3abd6f…06df7admin key$1.2K
  • Ethereum0xfcb19e…9ae3aadmin key$1.1K
  • Algorand2UEQTE5Q…HQFHMtoken contract, reserve$491.1
  • Arbitrum0xc7a599…1ebc9admin key$248.9

Circle can take value out of reach today only on Algorand. Why and how.

By chain

ChainAddressesValueExposedNot yet exposedQuantum-safePQ path
Solana1$416.1K$0.0$0.0$0.0None live
Ethereum2$202.4K$1.1K$0.0$0.0None live
Arbitrum3$5.8K$248.9$0.0$0.0None live
Avalanche3$3.9K$7.5$3.8$0.0None live
Polygon3$2.4K$0.1$0.0$0.0None live
Base3$1.2K$1.2K$0.0$0.0None live
Algorand3$491.2$491.1$0.0$0.0Available
OP Mainnet3$418.8$24.5$0.0$0.0None live

Addresses and sources

ChainAddressRoleStatusValueHoldingsSource
SolanaEPjFWdd5…yTDt1vtoken contractContract$416.1KUSDC 359,487 · USDT 2,778Published by the entity: Circle Developers, USDC contract addresses
Ethereum0xa0b869…06eb48token contractContract$201.3KUSDT 199,943 · DAI 1,561Published by the entity: Circle Developers, USDC contract addresses
Arbitrum0xaf88d0…8e5831token contractContract$5.5KUSDT 5,535Published by the entity: Circle Developers, USDC contract addresses
Avalanche0xb97ef9…c48a6etoken contractContract$3.9KUSDT 3,936Published by the entity: Circle Developers, USDC contract addresses
Polygon0x3c499c…5c3359token contractContract$2.4KUSDT 2,377Published by the entity: Circle Developers, USDC contract addresses
Base0x3abd6f…106df7admin keyKey visible$1.2KExplorer label: BaseScan contract page for USDC on base
Ethereum0xfcb19e…49ae3aadmin keyKey visible$1.1KUSDC 0Explorer label: Etherscan contract page for USDC on ethereum
Algorand2UEQTE5Q…LHQFHMASA 31566704token contract, reserveKey visible$491.1Published by the entity: Circle Developers, USDC contract addresses
OP Mainnet0x0b2c63…97ff85token contractContract$394.3USDT 395Published by the entity: Circle Developers, USDC contract addresses
Arbitrum0xc7a599…61ebc9admin keyKey visible$248.9Explorer label: Arbiscan contract page for USDC on arbitrum
OP Mainnet0xb04ffa…c4441fadmin keyKey visible$24.6Explorer label: Optimistic Etherscan contract page for USDC on optimism
Base0x833589…a02913token contractContract$24.1Published by the entity: Circle Developers, USDC contract addresses
Avalanche0x4b7c0f…60508eadmin keyKey visible$7.5Explorer label: OKLink Avalanche C-Chain contract page for USDC on avalanche
Avalanche0xf0f918…4a5cb7admin keyKey hidden$3.8Explorer label: OKLink Avalanche C-Chain contract page for USDC on avalanche
Polygon0xaee29e…6d2bccadmin keyKey visible$0.1Explorer label: Polygon Blockscout contract page for USDC on polygon
Algorand37XL3M57…25HAL4ASA 31566704managerUnknown$0.0Explorer label: Algorand mainnet indexer asset record 31566704 (USDC)
Algorand3ERES6JF…WBO5GEASA 31566704freezeKey visible$0.0Explorer label: Algorand mainnet indexer asset record 31566704 (USDC)
Base0x4fc785…f8ca44admin keyKey hidden$0.0Explorer label: BaseScan contract page for USDC on base
Arbitrum0x2e0a67…a77a68admin keyKey hidden$0.0Explorer label: Arbiscan contract page for USDC on arbitrum
Polygon0x9238e6…3417b3admin keyKey hidden$0.0Explorer label: Polygon Blockscout contract page for USDC on polygon
OP Mainnet0xbb8a93…cb18a3admin keyKey hidden$0.0Explorer label: Optimistic Etherscan contract page for USDC on optimism

The path to quantum-safe today

  • Algorand holdings: rekey each account to a Falcon-1024 authorizer. The address stays the same, no funds move, nothing changes for customers.
  • Assets issued on Algorand: rotate the manager, reserve, freeze and clawback addresses to Falcon accounts.
  • Other chains: no live path yet. Keys that have never signed stay Not yet exposed until they spend; moving them to fresh keys resets the clock. Threat model

About these labels

Every address above carries its source. "Published by the entity" means the entity itself listed the address (proof of reserves, transparency page, official docs). "Explorer label" means a public block explorer attributes it. Nothing here is inferred by us. If a label is wrong, dispute it and it is hidden within one business day while we check.

Token contracts from Circle's developer page (all chains, including Algorand ASA 31566704). Owner and proxy-admin keys were read from each FiatToken proxy on chain and are cited to the explorer contract page. Algorand clawback is disabled (zero address) so it is omitted.

Last measured 2026-09-17.