net_version

BNB Smart Chain settles BNB-paid fees and BEP-20 transfers under PoSA consensus. When you need to confirm a node is wired to the right one, net_version is the quickest check. It returns the network ID of the connected chain as a decimal string. On BNB Smart Chain mainnet that string is exactly "56", and the testnet answers "97". Send the request to https://bsc.therpc.io/YOUR_API_KEY against chain ID 56 and a correctly configured mainnet node replies with "56". The value arrives as a plain decimal string rather than a hex quantity, so comparing it directly in client code takes no extra parsing.

Use cases

• Verify a wallet or dApp points at BNB Smart Chain mainnet, expecting "56", before broadcasting a BNB-funded transaction.
• Branch environment-aware logic on the returned string, treating "56" as production mainnet and "97" as the testnet sandbox.

Parameters

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Response

Example request

1curl https://bsc.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H "Content-Type: application/json" \
4  -d '{
5    "jsonrpc": "2.0",
6    "method": "net_version",
7    "params": [],
8    "id": 1
9  }'

Try it live in the BNB Smart Chain playground.

Errors & troubleshooting

Common pitfalls

• Network ID and chain ID happen to coincide on BNB Smart Chain at 56, but they are distinct concepts that diverge on some networks, so always rely on eth_chainId for the value baked into transaction signatures.
• This response is a decimal string, unlike the hex-encoded quantities most numeric RPC methods return, so do not feed it through a hex parser before comparing.

Supported networks

• Mainnet — Chain ID: 56
• Testnet — Chain ID: 97

See also

• eth_chainId
• net_listening
• net_peerCount

1curl https://bsc.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H 'Content-Type: application/json' \
4  -d '{"jsonrpc":"2.0","id":1,"method":"net_version","params":[]}'