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Merged
taylanpince merged 2 commits into from
Nov 28, 2025
Merged

transak proxy address #558

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f7e633e
transak proxy address depends on chain Id
SamueleA Nov 13, 2025
9b42fb1
cleanup
SamueleA Nov 13, 2025
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5 changes: 3 additions & 2 deletions packages/checkout/src/hooks/useCheckoutUI/useCreditCardPayment.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ import { formatUnits, zeroAddress, type Hex } from 'viem'

import type { TransakConfig } from '../../contexts/CheckoutModal.js'
import type { Collectible, CreditCardProviders } from '../../contexts/SelectPaymentModal.js'
import { getCurrencyCode, TRANSAK_PROXY_ADDRESS } from '../../utils/transak.js'
import { getCurrencyCode, getTransakProxyAddress } from '../../utils/transak.js'
import { useTransakWidgetUrl } from '../useTransakWidgetUrl.js'
const TRANSAK_IFRAME_ID = 'credit-card-payment-transak-iframe'

Expand Down Expand Up @@ -87,9 +87,10 @@ export const useCreditCardPayment = ({
// this is a weird hack so that credit card integrations are as simple as possible and should work 99% of the time
// If an issue arises, the user can override the calldata in the transak settings

const transakProxyAddress = getTransakProxyAddress(network?.chainId || 137) || ''
const calldataWithProxy =
transakConfig?.callDataOverride ??
txData.replace(recipientAddress.toLowerCase().substring(2), TRANSAK_PROXY_ADDRESS.toLowerCase().substring(2))
txData.replace(recipientAddress.toLowerCase().substring(2), transakProxyAddress.substring(2))

const price = Number(formatUnits(BigInt(totalPriceRaw), Number(currencyDecimals || 18)))

Expand Down
28 changes: 26 additions & 2 deletions packages/checkout/src/utils/transak.ts
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Original file line number Diff line number Diff line change
@@ -1,8 +1,6 @@
import { ChainId } from '@0xsequence/network'
import { zeroAddress } from 'viem'

export const TRANSAK_PROXY_ADDRESS = '0x4a598b7ec77b1562ad0df7dc64a162695ce4c78a'

interface CountriesResult {
response: Country[]
}
Expand Down Expand Up @@ -48,3 +46,29 @@ export const getCurrencyCode = ({ chainId, currencyAddress, defaultCurrencyCode

return foundCurrencyAddress || defaultCurrencyCode
}

interface ProxyByChainId {
[key: number]: string
}

const chainIdToProxyAddressMapping: ProxyByChainId = {
[ChainId.MAINNET]: '0xab88cd272863b197b48762ea283f24a13f6586dd'.toLowerCase(),
[ChainId.SEPOLIA]: '0xD84aC4716A082B1F7eCDe9301aA91A7c4B62ECd7'.toLowerCase(),
[ChainId.POLYGON]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
[ChainId.POLYGON_AMOY]: '0xCB9bD5aCD627e8FcCf9EB8d4ba72AEb1Cd8Ff5EF'.toLowerCase(),
[ChainId.BSC]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
[ChainId.BSC_TESTNET]: '0x0E9539455944BE8a307bc43B0a046613a1aD6732'.toLowerCase(),
[ChainId.ARBITRUM]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
[ChainId.ARBITRUM_SEPOLIA]: '0x489F56e3144FF03A887305839bBCD20FF767d3d1'.toLowerCase(),
[ChainId.OPTIMISM]: '0x4A598B7eC77b1562AD0dF7dc64a162695cE4c78A'.toLowerCase(),
[ChainId.OPTIMISM_SEPOLIA]: '0xCB9bD5aCD627e8FcCf9EB8d4ba72AEb1Cd8Ff5EF'.toLowerCase(),
[ChainId.IMMUTABLE_ZKEVM]: '0x8b83dE7B20059864C479640CC33426935DC5F85b'.toLowerCase(),
[ChainId.IMMUTABLE_ZKEVM_TESTNET]: '0x489F56e3144FF03A887305839bBCD20FF767d3d1'.toLowerCase(),
[ChainId.BASE]: '0x8b83dE7B20059864C479640CC33426935DC5F85b'.toLowerCase(),
[ChainId.BASE_SEPOLIA]: '0xCB9bD5aCD627e8FcCf9EB8d4ba72AEb1Cd8Ff5EF'.toLowerCase()
}

export const getTransakProxyAddress = (chainId: number): string | undefined => {
const proxyAddress = chainIdToProxyAddressMapping[chainId]
return proxyAddress
}
6 changes: 4 additions & 2 deletions packages/checkout/src/views/PendingCreditCardTransaction.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ import {
useTransactionStatusModal
} from '../hooks/index.js'
import { useTransakWidgetUrl } from '../hooks/useTransakWidgetUrl.js'
import { getCurrencyCode, TRANSAK_PROXY_ADDRESS } from '../utils/transak.js'
import { getCurrencyCode, getTransakProxyAddress } from '../utils/transak.js'

interface PendingCreditTransactionProps {
skipOnCloseCallback: () => void
Expand Down Expand Up @@ -83,11 +83,13 @@ export const PendingCreditCardTransactionTransak = ({ skipOnCloseCallback }: Pen
// this is a weird hack so that credit card integrations are as simple as possible and should work 99% of the time
// If an issue arises, the user can override the calldata in the transak settings

const transakProxyAddress = getTransakProxyAddress(network?.chainId || 137) || ''

const calldataWithProxy =
transakConfig?.callDataOverride ??
creditCardCheckout.calldata.replace(
creditCardCheckout.recipientAddress.toLowerCase().substring(2),
TRANSAK_PROXY_ADDRESS.toLowerCase().substring(2)
transakProxyAddress.substring(2)
)

const price = Number(formatUnits(BigInt(creditCardCheckout.currencyQuantity), Number(creditCardCheckout.currencyDecimals)))
Expand Down