Developer Quickstart

Build on Sentrix in 10 minutes. Deploy a smart contract, read chain state, and send transactions.

Connect to Sentrix

Testnet (recommended for development)

RPC URL	https://testnet-rpc.sentrixchain.com/rpc
Chain ID	7120
Explorer	https://scan.sentrixchain.com
Faucet	https://faucet.sentrixchain.com

MetaMask setup

Settings → Networks → Add network manually:

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

Get test SRX from the faucet.

Deploy a Smart Contract (Remix)

1. Open remix.ethereum.org
2. Create Token.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

contract MyToken {
    string public name = "MyToken";
    uint256 public totalSupply = 1_000_000 * 10**18;
    mapping(address => uint256) public balanceOf;

    constructor() {
        balanceOf[msg.sender] = totalSupply;
    }

    function transfer(address to, uint256 amount) external returns (bool) {
        require(balanceOf[msg.sender] >= amount);
        balanceOf[msg.sender] -= amount;
        balanceOf[to] += amount;
        return true;
    }
}

3. Compile → Solidity 0.8.20+
4. Deploy → Environment: "Injected Provider — MetaMask" → Deploy
5. Confirm in MetaMask → mined in ~1s

ethers.js / viem

import { createPublicClient, createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'

// Read-only client
const client = createPublicClient({
  transport: http('https://testnet-rpc.sentrixchain.com/rpc'),
})

const height = await client.getBlockNumber()
const balance = await client.getBalance({ address: '0x...' })

// Signing client (for transactions)
const account = privateKeyToAccount('0x...')
const wallet = createWalletClient({
  account,
  transport: http('https://testnet-rpc.sentrixchain.com/rpc'),
})

const hash = await wallet.sendTransaction({
  to: '0x...',
  value: 1000000000000000000n, // 1 SRX in wei
})

REST API

# Chain info
curl https://testnet-rpc.sentrixchain.com/chain/info

# Get balance
curl https://testnet-rpc.sentrixchain.com/accounts/0xYOUR_ADDRESS/balance

# List validators
curl https://testnet-rpc.sentrixchain.com/validators

# Prometheus metrics
curl https://testnet-rpc.sentrixchain.com/metrics

JSON-RPC Methods

All standard Ethereum JSON-RPC methods are supported:

# Chain ID
curl -X POST https://testnet-rpc.sentrixchain.com/rpc \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

# Block number
curl -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}' \
  https://testnet-rpc.sentrixchain.com/rpc

# Get balance (returns wei)
curl -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0xYOUR_ADDRESS","latest"],"id":1}' \
  https://testnet-rpc.sentrixchain.com/rpc

Full method list: eth_chainId, eth_blockNumber, eth_getBalance, eth_getTransactionCount, eth_getCode, eth_getStorageAt, eth_call, eth_estimateGas, eth_gasPrice, eth_sendRawTransaction, eth_getTransactionByHash, eth_getTransactionReceipt, eth_getBlockByNumber, eth_getBlockByHash, net_version, net_listening.

Hardhat / Foundry

// hardhat.config.js
module.exports = {
  networks: {
    sentrixTestnet: {
      url: "https://testnet-rpc.sentrixchain.com/rpc",
      chainId: 7120,
      accounts: [process.env.PRIVATE_KEY],
    },
  },
};

# foundry.toml
[rpc_endpoints]
sentrix_testnet = "https://testnet-rpc.sentrixchain.com/rpc"

Gas Model

Sentrix uses EIP-1559:

Parameter	Value
Base fee	10,000 sentri (burned)
Block gas limit	30,000,000
Block gas target	15,000,000
1 SRX	10^18 wei = 10^8 sentri

Next Steps

• Smart Contract Guide — full Remix walkthrough
• MetaMask Setup — step-by-step with screenshots
• API Reference — all REST + RPC endpoints
• Network Info — mainnet vs testnet config
• Validator Guide — run your own node