DocsSmart contracts

Smart contracts

Every address XyloNet interacts with on Arc mainnet (chain 5042). Each one links to the explorer.

XyloNet does not deploy an AMM, router, vault or bridge contract of its own. Exchanges and any-token bridges execute through LI.FI's Diamond, native USDC bridging through Circle CCTP v2, and PayX through one payment contract per asset (each PayXTipping v2 instance escrows exactly one token, so each asset's payments live in their own contract with their own claims). Always verify an address on the explorer before signing.

Stablecoins (Circle)

Circle-issued tokens native to Arc.

Contract	Address	Notes
USDC	0x3600000000000000000000000000000000000000	ERC-20 interface of the gas token (6 decimals)
EURC	0xbEf5f6d51CB62b58e6A8f77868681825C6fe21c1	Euro Coin (6 decimals)

CCTP v2 (Arc domain 26)

Circle Cross-Chain Transfer Protocol: burn on source, mint on destination.

Contract	Address	Notes
TokenMessengerV2	0x28b5a0e9C621a5BadaA536219b3a228C8168cf5d	depositForBurn entry point
MessageTransmitterV2	0x81D40F21F12A8F0E3252Bccb954D722d4c464B64	receiveMessage / attestation verification
TokenMinterV2	0xfd78EE919681417d192449715b2594ab58f5D002	mints USDC on Arc after attestation

Circle Gateway

Unified USDC balance across chains.

Contract	Address	Notes
GatewayWallet	0x77777777Dcc4d5A8B6E418Fd04D8997ef11000eE	deposit / unified balance
GatewayMinter	0x2222222d7164433c4C09B0b0D809a9b52C04C205	mints against Gateway balance

Common infrastructure

Standard contracts deployed at their canonical addresses.

Contract	Address	Notes
Permit2	0x000000000022D473030F116dDEE9F6B43aC78BA3	signature-based token approvals
Multicall3	0xcA11bde05977b3631167028862bE2a173976CA11	batched reads
StableFX Escrow	0xe2E5F173576B513d994073CCbDaCBE027d43DFe6	Circle StableFX settlement escrow

XyloNet

Contracts owned or operated by XyloNet. Safes are 2-of-3 Gnosis Safe v1.4.1.

Contract	Address	Notes
Admin Safe	0xFD3A6DEE167C9B519fE7f646F91e9D80ba51Ed96	protocol admin (2-of-3)
Treasury Safe	0x7EF8Aa263E3Bb8a151702108bD29932e50409990	fee recipient (2-of-3)
PayX v2 (USDC)	0x47d4164F2f65afc00c7ba932cbEC9858b5FDAf0A	USDC payment instance; payments are escrowed until the handle owner claims. Fee 1%, minimum 0.1 USDC
PayX v2 (EURC)	0xB9E6b729425DB5565E8caFCE6d35E820FaE7d1ca	EURC payment instance; payments are escrowed until the handle owner claims. Fee 1%, minimum 0.1 EURC
PayX v2 (cirBTC)	0x1de44961059A0E4516fF56379EB77B1c4Da62f87	cirBTC payment instance; payments are escrowed until the handle owner claims. Fee 1%, minimum 0.000001 cirBTC

LI.FI (Arc mainnet)

Routing partner for exchanges and any-token bridges.

Contract	Address	Notes
LI.FI Diamond	0xA4072583658Fae592A3506A42431cb6316a8d40b	exchange / bridge executor
LI.FI FeeForwarder	0xEDff4051B8286d2333149429F019dC10E23570da	integrator fee collection

Source of truth

Circle contract addresses come from the official Arc documentation at https://docs.arc.io. LI.FI addresses come from LI.FI's deployment registry. XyloNet addresses are published here and in the public repository.