setupweb.ts

export const setupWeb3 = (networkId: number) => {
	let provider = '';
	if (networkId === 97) {
		provider = 'https://data-seed-prebsc-1-s1.binance.org:8545/';
	}
	if (networkId === 56) {
		provider = 'https://bsc-dataseed1.ninicoin.io';
	}

	if (networkId === 137) {
		provider = 'https://polygon-rpc.com/';
	}

	// if (network === 'eth') {
	// 	provider = 'https://mainnet.infura.io/v3/c9a2fe300dd9496f9ee19bc4cb2c4689';
	// }
	return new Web3(provider);
};

verify-transaction.ts

			const web3 = setupWeb3(Number(blockchainNetworkId?.networkId));

			const validAddress = web3.utils.isAddress(
				destinationAddress,
				Number(blockchainNetworkId?.networkId) || 56
			);

			if (!validAddress) {
				return {
					status: false,
					message:
						'The destination address seems not be a valid address. Please verify.',
				};
			}

			const receipt = await web3.eth.getTransactionReceipt(hash);

			if (!receipt) {
				return {
					status: false,
					message: 'Transaction receipt does not exist',
				};
			}

			if (receipt.status !== true) {
				return {
					status: false,
					message:
						'This is a failed transaction. Only successfully transactions are processed. Please contact support.',
				};
			}

			// check toAddress
			const ReceiverBn = web3.utils
				.toBN(web3.utils.toHex(receipt.logs[0].topics[2]))
				.toString();

			const destinationBN = web3.utils
				.toBN(destinationAddress.toString())
				.toString();

			if (ReceiverBn !== destinationBN) {
				return {
					status: false,
					message: `inconsistent destination address ${ReceiverBn}---${destinationBN}`,
				};
			}

			// check amount
			const contractAddress = await ContractAddress.findOne({
				blockchainNetworkId,
				currencyId,
			});
			const amountSentInBlockchain = web3.utils.fromWei(
				web3.utils.toBN(receipt.logs[0].data).toString(),
				contractAddress?.decimals || 'ether'
			);

			if (Number(amountSentInBlockchain) + 5 < Number(amount)) {
				return {
					status: false,
					message: `Amount Deposited in Blockchain is less:  ${amountSentInBlockchain}>>>>${amount}`,
				};
			}