Supported Chains

Payments

The payment proxy smart contracts enable the various payment types.

The most widely deployed payment proxy is the ERC20FeeProxy. The most frequently used payment proxy is the ERC20ConversionProxy.

For an explanation of what each smart contract does, see Smart Contracts Overview

Make sure to scroll horizontally to see all the payment proxy types! 😉

Chain	Chain Name	Chain ID	ERC20FeeProxy	EthereumFeeProxy	Erc20ConversionProxy	EthConversionProxy	BatchConversionPayments	ERC20SwapToPay	Erc20SwapToConversion	ERC20TransferableReceivable	ERC20EscrowToPay	ERC20Proxy	EthereumProxy	BatchPayments (deprecated)
Ethereum Mainnet	mainnet	1
Sepolia	sepolia	11155111
Goerli (deprecated)	goerli	5
Optimism	optimism	10
Arbitrum One	arbitrum-one	42161
Base	base	8453
zkSync Era	zksyncera	324
zkSync Goerli (deprecated)	zksynceratestnet	280
Gnosis	xdai	100
Polygon	matic	137
Mumbai	mumbai	80001
BSC	bsc	56
BSC Testnet	bsctest	97
Celo	celo	42220
Alfajores	alfajores	44787
Fantom	fantom	250
Tombchain	tombchain	6969
Core	core	1116
Avalanche	avalanche	43114
Fuse	fuse	122
Moonbeam	moonbeam	1284
Ronin	ronin	2020
Mantle	mantle	5000
Mantle Testnet	mantle-testnet	5001
NEAR	N/A	N/A
NEAR Testnet	N/A	N/A

Storage

These smart contracts facilitate storing IPFS content addressable hashes (CIDs) on-chain.

Chain	Chain ID	RequestHashStorage	RequestOpenHashSubmitter
Gnosis	100
Sepolia	11155111
Ethereum Mainnet (deprecated)	1
Goerli (deprecated)	5

REQ Token and Burn Mechanism

The REQ Token is on Ethereum Mainnet. The burn contracts facilitate locking xDAI on Gnosis, bridging xDAI to Ethereum, swapping xDAI for REQ, and burning the REQ.

Chain	Chain ID	lockForREQBurn	DaiBasedREQBurner	RequestToken
Ethereum Mainnet	1
Gnosis	100