# Pay through a proxy-contract with a multisig

The imports you will need:

```typescript
import { Contract, ContractTransaction, Signer } from 'ethers';
import {
  encodeApproveErc20,
  encodePayErc20Request,
} from '@requestnetwork/payment-processor/dist/payment/erc20-proxy';
import { getRequestPaymentValues } from '@requestnetwork/payment-processor/dist/payment/utils';
import { ClientTypes } from '@requestnetwork/types';
```

In this example, we will use the [Gnosis multisig](https://github.com/gnosis/MultiSigWallet/blob/master/contracts/MultiSigWallet.sol). Here is its partial abi:

```typescript
const multisigAbi = [
  'function submitTransaction(address _destination, uint _value, bytes _data) returns (uint)',
];
```

## Pay ETH request

```typescript
export const payEthWithMultisig = async (
  request: ClientTypes.IRequestData,
  multisigAddress: string,
  signer: Signer,
): Promise<ContractTransaction> => {
  const multisigContract = new Contract(multisigAddress, multisigAbi, signer);
  const { paymentAddress, paymentReference } = getRequestPaymentValues(request);
  return multisigContract.submitTransaction(paymentAddress, 0, paymentReference);
};
```

## Pay ERC20 request

### Approve ERC20 spending

```typescript
export const approveErc20WithMultisig = async (
  request: ClientTypes.IRequestData,
  multisigAddress: string,
  signer: Signer,
): Promise<ContractTransaction> => {
  const multisigContract = new Contract(multisigAddress, multisigAbi, signer);
  const tokenAddress = request.currencyInfo.value;
  return multisigContract.submitTransaction(tokenAddress, 0, encodeApproveErc20(request, signer));
};
```

### Pay ERC20 request

```typescript
import { erc20FeeProxyArtifact } from '@requestnetwork/smart-contracts';

export const payErc20WithMultisig = async (
  request: ClientTypes.IRequestData,
  multisigAddress: string,
  signer: Signer,
): Promise<ContractTransaction> => {
  const multisigContract = new Contract(multisigAddress, multisigAbi, signer);
  const proxyAddress = erc20FeeProxyArtifact.getAddress(request.currencyInfo.network);
  return multisigContract.submitTransaction(
    proxyAddress,
    0,
    encodePayErc20Request(request, signer),
  );
};
```


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