Developer
Networks
The blockchain networks Belong CheckIn supports, with chain IDs, native tokens, and multi-chain wallet behavior.
Overview
Belong CheckIn works across multiple EVM networks through a unified wallet interface, with BNB Chain as the primary network for check-ins, LONG rewards, and default NFT collections. Sui is supported as a secondary chain.
Supported networks
| Network | Chain ID | Native token | Notes |
|---|---|---|---|
| BNB Chain (BSC) | 56 | BNB | Primary — LONG rewards, CheckIn, default NFTs |
| Polygon | 137 | POL | Low-cost EVM Layer 2 |
| Base | 8453 | ETH | Coinbase-backed EVM Layer 2 |
| Ethereum | 1 | ETH | Highest liquidity; DeFi and NFTs |
| SKALE Nebula | 1482601649 | sFUEL | Zero gas fees; gaming and NFTs |
| SKALE Europa | 2046399126 | sFUEL | Zero gas fees |
| Sui | — | SUI | Secondary chain, via Enoki |
Multi-chain wallets
A user's account aggregates balances across networks:
- Each network reports its native balance and ERC-20 token balances (such as USDC)
- The wallet UI shows balances per network and lets users switch the active network
- Switching a network clears the previous balances, fetches the new network's data, and refreshes transaction forms
Balances are fetched in parallel and cached briefly to stay responsive and avoid rate limits.
Network selection in practice
- CheckIn payments and rewards default to BNB Chain — venues set USDC and/or LONG as accepted tokens
- Token-gated events default to EVM (BSC) unless a Sui collection is explicitly chosen
- Block explorer links and gas handling are resolved per network automatically
Related
- Wallet & Sign-In — the user-facing wallet
- Fees & Staking
- MCP Tools — deploying NFTs per network