// Result
{
"id":67,
"jsonrpc": "2.0",
"result": "3"
}curl https://mainnet.opbnb.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'
curl https://testnet.opbnb.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'