Frequently Asked Questions
Common questions about Selendra
General
What is Selendra?
Selendra is a Substrate-based blockchain built for Cambodia and open to Southeast Asia. It features dual virtual machines (EVM and WASM), unified accounts that work across both VMs, and 1-second block finality. The network is developed by SmallWorld and currently powers real applications like StadiumX (30,000+ users) and Bitriel wallet.
How does it differ from Ethereum?
| Feature | Selendra | Ethereum |
|---|---|---|
| Block Time | 1 second | 12 seconds |
| Gas Price | 0.1 Gwei | ~20 Gwei |
| Architecture | EVM + WASM | EVM only |
What can I build?
Anything you can build on Ethereum, plus more. Common use cases include:
- DeFi - Lending, DEXs, yield farming
- Payments - Low-cost transfers, loyalty programs, remittances
- NFTs - Digital collectibles, gaming assets, tickets
- Supply Chain - Provenance tracking, certifications
- Digital Identity - Verifiable credentials, KYC solutions
- Gaming - On-chain assets, prediction markets, fantasy sports
Technical
Languages supported?
Selendra supports two smart contract environments:
- EVM (Ethereum Virtual Machine): Write contracts in Solidity or Vyper. Use familiar tools like Hardhat, Foundry, Remix, and MetaMask.
- WASM (WebAssembly): Write contracts in Rust using the ink! framework. Better performance for complex logic.
- Frontend: JavaScript/TypeScript with ethers.js, viem, or @polkadot/api.
Most developers start with EVM since Ethereum tooling works out of the box.
How to connect?
- Chain ID: 1961
- RPC: https://rpc.selendra.org
- Explorer: https://explorer.selendra.org
- Gas: 0.1 Gwei
Are Ethereum tools compatible?
Yes, standard Ethereum tools work without modification:
- Wallets: MetaMask, Rainbow, WalletConnect
- Development: Hardhat, Foundry, Remix IDE
- Libraries: ethers.js, viem, web3.js
- Contracts: OpenZeppelin, Solmate
- Testing: Chai, Mocha, Foundry tests
Just point your tools at Selendra's RPC (https://rpc.selendra.org) and chain ID (1961).
Development
Deployment costs?
- Simple contracts: ~0.001 SEL
- Complex: ~0.005-0.01 SEL
- ~100x cheaper than Ethereum
Can I migrate Ethereum dApps?
Yes:
- Update RPC to Selendra
- Change chain ID to 1961
- Redeploy contracts
- Update frontend
Is there a testnet?
- RPC: https://rpc-testnet.selendra.org
- Chain ID: 1953
- Faucet: https://faucet.selendra.org
Tokens
What is SEL?
SEL is Selendra's native token with three primary uses:
- Gas fees - Pay for transactions and smart contract execution
- Staking - Secure the network and earn rewards (10,000 SEL minimum)
- Governance - Vote on protocol upgrades and treasury proposals
SEL is required for all network operations. Transaction costs are approximately $0.00025 per transaction.
Transaction fees?
- Transfer: ~0.000001 SEL
- Contract call: ~0.00001-0.0001 SEL
- Deployment: ~0.001-0.01 SEL
Nodes
Hardware requirements?
- CPU: 8+ cores @ 3.0GHz
- RAM: 16GB (32GB recommended)
- Storage: 200GB NVMe SSD
- Stake: 10,000 SEL minimum
See Run Nodes for guides.
Security
Is Selendra secure?
Selendra inherits security from multiple layers:
- Substrate framework - Battle-tested codebase used by Polkadot and 100+ other chains
- AlephBFT consensus - Byzantine fault-tolerant finality from Cardinal Cryptography (Aleph Zero)
- Proof of Stake - Economic incentives align validators with network health
- Slashing - Validators lose stake for misbehavior (double-signing, downtime)
- 100% uptime - Network has maintained 100% uptime for 5.5+ months since relaunch
The network currently runs 4 validators operated by SmallWorld, with plans to expand to 20+ community validators by 2026.
How to keep funds safe?
- Use hardware wallets
- Keep keys offline
- Verify contract addresses
- Use audited dApps
Support
Where to get help?
Join our community for real-time support:
- Telegram: t.me/selendranetwork - Active developer community, fastest response
- X (Twitter): @selendranetwork - Announcements and updates
- GitHub: github.com/selendra - Report bugs, contribute code
- Security issues: security@selendra.org - Responsible disclosure
Contact
- Technical: support@selendra.org
- Business: business@selendra.org
- Partnerships: partnerships@selendra.org
Quick Links: Get Started • GitHub
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