> For the complete documentation index, see [llms.txt](https://polymarks.gitbook.io/polymarks-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://polymarks.gitbook.io/polymarks-docs/multi-chain-expansion/overview.md).

# Chain Support

## Current Status

**Live Now:**

* ✅ Helius RPC (Solana)
  * Solana blockchain data
  * Wallet tracking foundation
  * Currently underutilized (prepared for future features)

## Planned Integrations

### 1. BSC (Binance Smart Chain)

**Why BSC?**

* Large trading community
* Low transaction fees
* Wide wallet adoption
* Many whales operate on BSC

**Features:**

* Track whale wallets on BSC
* BEP-20 token holdings
* Transaction history
* Cross-chain whale activity

**RPC Provider:**

* BSCScan API
* QuickNode
* Ankr

***

### 2. Polygon (Matic)

**Why Polygon?**

* **Polymarket uses Polygon** for settlements
* Low gas fees
* Fast transactions
* Ethereum compatibility

**Features:**

* Polymarket contract tracking
* On-chain bet verification
* Whale wallet balances
* Settlement tracking

**RPC Provider:**

* Polygon RPC
* Alchemy
* Infura

***

### 3. Ethereum Mainnet

**Why Ethereum?**

* Largest DeFi ecosystem
* ENS name resolution
* Whale wallet origins
* Token holdings (ERC-20)

**Features:**

* Ethereum whale tracking
* ENS domain resolution (0x1ff26...DBBD → vitalik.eth)
* Gas price monitoring
* NFT holdings

**RPC Provider:**

* Etherscan API
* Alchemy
* Infura

***

## Cross-Chain Features (Post-Integration)

### Unified Whale Profiles

Track a single whale across multiple chains:

```
WhaleKing's Portfolio:
├─ Solana:   $127K
├─ BSC:      $89K
├─ Polygon:  $43K (Polymarket)
└─ Ethereum: $212K
Total:       $471K
```

### Multi-Chain Alerts

* "WhaleKing just moved $50K on BSC"
* "Top whale active on 3 chains in last hour"
* "Cross-chain arbitrage detected"

### Chain-Specific Filtering

Filter whale alerts by blockchain:

* [x] Solana trades only
* [x] BSC trades only
* [x] Polygon (Polymarket) only
* [x] Ethereum only
* [x] All chains

***

## Technical Architecture

### RPC Client Structure

```typescript
core/
├── api/
│   ├── helius.client.ts      // Solana (existing)
│   ├── bsc.client.ts          // BSC (planned)
│   ├── polygon.client.ts      // Polygon (planned)
│   ├── ethereum.client.ts     // Ethereum (planned)
│   └── multichain.client.ts   // Aggregator (planned)
```

### Unified Data Model

All chains return standardized format:

```typescript
interface ChainWalletActivity {
  chain: 'solana' | 'bsc' | 'polygon' | 'ethereum'
  wallet: string
  balance: number
  transactions: Transaction[]
  tokens: TokenHolding[]
  lastActive: number
}
```

***

## Environment Variables (Future)

```env
# Solana
NEXT_PUBLIC_HELIUS_API_KEY=abc123

# BSC
NEXT_PUBLIC_BSC_RPC_URL=https://...
NEXT_PUBLIC_BSCSCAN_API_KEY=xyz789

# Polygon
NEXT_PUBLIC_POLYGON_RPC_URL=https://...
NEXT_PUBLIC_POLYGONSCAN_API_KEY=def456

# Ethereum
NEXT_PUBLIC_ETHEREUM_RPC_URL=https://...
NEXT_PUBLIC_ETHERSCAN_API_KEY=ghi789
```

***

## Migration Strategy

1. **Phase 1:** Add Polygon (highest priority - Polymarket native)
2. **Phase 2:** Add Ethereum (ENS, largest ecosystem)
3. **Phase 3:** Add BSC (community demand)
4. **Phase 4:** Add Solana features (utilize existing Helius integration)

***

## Why Multi-Chain Matters

**For Users:**

* Complete whale picture across all chains
* Better trading insights
* More comprehensive tracking

**For PolyMarks:**

* Differentiation from competitors
* Broader market coverage
* Future-proof architecture

***

**Questions?** Open a GitHub issue or reach out on Twitter.