MetaMask Setup

Sentrix is fully MetaMask-compatible on both networks. Mainnet (chain ID 7119) and Testnet (chain ID 7120) both run Voyager DPoS+BFT consensus with EVM enabled — MetaMask reads balances, signs transactions, and deploys Solidity contracts on either network.

Add Sentrix Testnet to MetaMask

1. Open MetaMask → Settings → Networks → Add a network → Add a network manually

2. Fill in:

   Field	Value
   Network Name	Sentrix Testnet
   New RPC URL	https://testnet-rpc.sentrixchain.com/rpc
   Chain ID	7120
   Currency Symbol	SRX
   Block Explorer URL	https://scan.sentrixchain.com

3. Save. Switch to "Sentrix Testnet" in the network dropdown.

Add Sentrix Mainnet

Field	Value
Network Name	Sentrix
New RPC URL	https://rpc.sentrixchain.com
Chain ID	7119
Currency Symbol	SRX
Block Explorer URL	https://scan.sentrixchain.com

Mainnet supports eth_sendRawTransaction and Solidity contract deployment since the 2026-04-25 Voyager activation. Use mainnet for production deployments and testnet for development.

Get Test SRX

Faucet: https://faucet.sentrixchain.com (or use a funded testnet wallet directly).

Send SRX

Standard MetaMask Send flow. Gas price defaults to ~20 gwei (the network ignores this and uses base fee internally — actual on-chain fee is MIN_TX_FEE = 0.0001 SRX).

Deploy a Contract via Remix

1. Open https://remix.ethereum.org
2. Write/paste a Solidity contract
3. Compile (Solidity 0.8.x recommended)
4. Deploy & Run Transactions tab → Environment → "Injected Provider — MetaMask"
5. Confirm MetaMask is on Sentrix Testnet
6. Click Deploy → confirm in MetaMask

The contract address appears in Remix and is queryable via eth_getCode.

Verify Contract via curl

# Get deployed contract code
curl -X POST https://testnet-rpc.sentrixchain.com/rpc \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xCONTRACT_ADDR","latest"],"id":1}'

# Call a function (example: totalSupply() = 0x18160ddd)
curl -X POST https://testnet-rpc.sentrixchain.com/rpc \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0xCONTRACT_ADDR","data":"0x18160ddd"},"latest"],"id":1}'

Troubleshooting

MetaMask shows wrong balance:

• Sentrix returns balance in wei (sentri × 1e10) for compatibility
• 1 SRX = 100,000,000 sentri = 1,000,000,000,000,000,000 wei
• MetaMask interprets correctly using the 18-decimal convention

Transaction stuck pending:

• Check eth_getTransactionReceipt directly via curl — receipt may already exist
• Block time is 1s; expect confirmation within 1-2 blocks

eth_call returns "0x":

• The call executed but returned no data, or the call reverted silently
• Try with explicit from address that has balance

Contract address differs from expected:

• Sentrix uses standard keccak256(rlp([sender, nonce]))[12:] derivation
• Make sure you're computing from the correct nonce (use eth_getTransactionCount immediately before deploy)