Arc: Confidential Transfers

Circle's institutional-grade stablecoin chain uses TEE-shielded amounts with regulatory view keys — compliance and privacy coexisting at L3.

ArcCircle · Institutional-grade stablecoin L1 · Malachite BFTA-301 · ARC SECTION CUTCOMPLIANCE DEPTH →L5 APPLICATIONWallets, dApps, UIL4 MIDDLEWAREAPIs, bridges, oraclesL3 EXECUTIONSmart contracts, VML2 CONSENSUSBlock production, finalityL1 NETWORKP2P transport, gossipSTATE CHANGEMalachite BFTPermissioned validatorsT6 · S2Confidential TransfersTEE-shielded amountsT3 · S6EVM ContractsSolidity-compatibleT1 · S7CCTP v2Cross-chain transferT5 · S5Regulatory View KeysSelective disclosureT6 · S2Institutional FXCircle GatewayT2 · S4CIRCLE INFRASTRUCTUREReservesCross-ChainIdentityAccountTokenGate (pre-condition)Monitor (concurrent)Obligation (post-settlement)Solid = code-enforcedDashed = policy-enforced
Standard Transfer
Public visibility, no privacy shielding
0x742d...8Fa2
0x1234...5678
50,000 USDC Token Green
✓ Tx Hash: 0xab12cd34...
✓ Block: 18,923,401
✓ Status: Confirmed
Confidential Transfer
TEE-shielded, amount encrypted
0x742d...8Fa2
0x1234...5678
SHIELDEDTEE
Commitment: 0xc2a9b4e7f1d8c3a6...
✓ TEE Enclave: SGX
✓ Attestation: Valid
✓ Status: Confidential
Regulatory View Key
Decrypt with authorized key
No decryptions yet
Privacy Model
Parties: Sender and recipient remain visible on-chain. No hiding of participants.
Amounts: Transfer value encrypted in TEE enclave. Commitment published instead of plaintext.
Access: Regulators hold view keys. Decryption logged. Full audit trail maintained.

Comparison: Arc vs. Ethereum compliance depth

ArcCircle · Institutional-grade stablecoin L1 · Malachite BFTA-301 · ARC SECTION CUTCOMPLIANCE DEPTH →L5 APPLICATIONWallets, dApps, UIL4 MIDDLEWAREAPIs, bridges, oraclesL3 EXECUTIONSmart contracts, VML2 CONSENSUSBlock production, finalityL1 NETWORKP2P transport, gossipMalachite BFTConfidential TraEVM ContractsCCTP v2Regulatory View Institutional FXreservtransfidentiexecuttoken
EthereumGeneral-purpose L1 · Proof of Stake · Open validator setA-101 · ETHEREUM SECTION CUTCOMPLIANCE DEPTH →L5 APPLICATIONWallets, dApps, UIL4 MIDDLEWAREAPIs, bridges, oraclesL3 EXECUTIONSmart contracts, VML2 CONSENSUSBlock production, finalityL1 NETWORKP2P transport, gossipERC-4337ERC-20 Freeze/BuChainalysis APIsCircle APIs / CCWallets & dAppsneutratransfexecuttoken