Supported chains
Ophis settles MEV-protected batch auctions on 13 EVM chains and reaches Solana, Bitcoin, Monad, Hyperliquid, X Layer, Sui, and Tron as destinations via NEAR Intents. This page is the canonical list.
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The short version: 13 EVM chains, 3 of them Ophis-operated (Optimism, Unichain, and Robinhood Chain), plus Solana, Bitcoin, Monad, Hyperliquid, X Layer, Sui, and Tron as cross-chain destinations. The full table with chain IDs and settlement mode:
| Chain | Chain ID | Settlement |
|---|---|---|
| Arbitrum One | 42161 | CoW Protocol hosted |
| Avalanche | 43114 | CoW Protocol hosted |
| Base | 8453 | CoW Protocol hosted |
| BNB Smart Chain | 56 | CoW Protocol hosted |
| Ethereum | 1 | CoW Protocol hosted |
| Gnosis Chain | 100 | CoW Protocol hosted |
| Ink | 57073 | CoW Protocol hosted |
| Linea | 59144 | CoW Protocol hosted |
| Optimism | 10 | Ophis-operated |
| Plasma | 9745 | CoW Protocol hosted |
| Polygon | 137 | CoW Protocol hosted |
| Robinhood Chain | 4663 | Ophis-operated |
| Unichain | 130 | Ophis-operated |
| Solana | n/a | Destination via NEAR Intents |
| Bitcoin | n/a | Destination via NEAR Intents |
| Monad | n/a | Destination via NEAR Intents |
| Hyperliquid | n/a | Destination via NEAR Intents |
| X Layer | n/a | Destination via NEAR Intents |
| Sui | n/a | Destination via NEAR Intents |
| Tron | n/a | Destination via NEAR Intents |
Which chains does Ophis support?
Ophis covers 13 EVM chains, with Optimism, Unichain, and Robinhood Chain as its operated sovereign networks, and supports Solana, Bitcoin, Monad, Hyperliquid, X Layer, Sui, and Tron as destinations via NEAR Intents.
What does Ophis-operated mean?
On Optimism, Unichain, and Robinhood Chain, settlement uses Ophis's own GPv2Settlement contract at a non-canonical address. Every path pays a 1 bp base; Ophis retains 80% of reference-quote improvement on volatile pairs (99 bps cap) or 50% on stable pairs (20 bps cap). Agents and integrators must resolve the per-chain settlement domain and orderbook host via the @ophis/sdk helpers or the MCP list_chains tool before signing, because CoW's canonical address yields a domain the deployed contract rejects.
How do cross-chain destinations work?
Solana, Bitcoin, Monad, Hyperliquid, X Layer, Sui, and Tron are supported as destinations from any EVM source chain via NEAR Intents, with no second wallet required. They are destinations only: a swap starts from an EVM chain.
Is there a testnet?
Yes. The Sepolia testnet is available for integration testing. This page lists production chains only.
For Stock Token markets, see swapping on Robinhood Chain. Token support and executable liquidity must be checked in the live quote.
For agents and integrators
The machine-readable per-chain contract-pinning policy (settlement addresses, vault relayers,
EIP-712 domains, orderbook hosts) ships in the
Ophis agent skill. The
@ophis/sdk helpers
resolve the correct settlement domain per chain, and the
MCP server exposes the same data through the
list_chains tool. Fee detail per chain lives on the
pricing page.