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Supported Chains

SkyBridge V2 is live on 11 chains. The Diamond contract (0x14fbb1eD5BC098B4Ea236dcE0941EDB02e967b44) is the same address on every chain. Each chain has its own EntryPoint proxy - see Official Addresses for the full list.

Rail and lane coverage​

ChainCCIPCCTP (native USDC)OP StandardWETH via CCIPArb Canonical ETH
Ethereum✓✓-✓ (↔ Base/Arb/OP)✓ (→ Arb/RH)*
Polygon✓✓---
Base✓✓✓✓ (↔ Eth)-
Arbitrum One✓✓-✓ (↔ Eth)✓*
Optimism✓✓✓✓ (↔ Eth)-
Avalanche C-Chain✓✓---
BNB Chain✓----
Unichain✓✓✓--
Soneium✓-✓--
Ink✓✓✓--
MegaETH✓----

* Arb Canonical ETH is deposits-only (Ethereum → destination) and native-ETH-only - no withdrawals, no ERC-20s. It also covers Robinhood Chain, which isn't part of the 11-chain fleet above (see Robinhood Chain below). See Bridge Arbitrum ETH.

OP Standard covers the five OP-stack L2s only (Base, Optimism, Unichain, Soneium, Ink), in both directions - withdrawals back to Ethereum follow the OP Stack's ~7-day finalization window.

CCTP is available on the 8 chains where Circle supports native USDC minting.

Per-chain EntryPoint addresses​

Note on shared addresses: Six chains (Polygon, Arbitrum One, Optimism, Avalanche C-Chain, BNB Chain, and Soneium) share EntryPoint proxy address 0x126C7cce26214f04FDa627AA901696f3835d9FfC. This is not a collision - those chains had identical deployer-nonce sequences on fresh accounts, producing the same CREATE address.

ChainchainIdEntryPoint proxy
Ethereum10xcBCBEd47D9791D895F3819476246ebB218eA3f41
Polygon1370x126C7cce26214f04FDa627AA901696f3835d9FfC
Base84530x5303A035bb5ebD5fec7b931E9e1673d554451a71
Arbitrum One421610x126C7cce26214f04FDa627AA901696f3835d9FfC
Optimism100x126C7cce26214f04FDa627AA901696f3835d9FfC
Avalanche C-Chain431140x126C7cce26214f04FDa627AA901696f3835d9FfC
BNB Chain560x126C7cce26214f04FDa627AA901696f3835d9FfC
Unichain1300x63743c4c3E2bf2ae7958c7e79D265372Ef40E315
Soneium18680x126C7cce26214f04FDa627AA901696f3835d9FfC
Ink570730xf08383930E9f172F39a3257f8900D29AdeD8ce68
MegaETH43260xB14C4090FeC68160b007cC031571856F5F83d2fE

Full proxy + implementation addresses, Diamond facet addresses, and admin Safe addresses are in Official Addresses.

About each chain​

Ethereum (mainnet) - the hub chain. Supports CCIP, CCTP, and WETH-via-CCIP to Base, Arbitrum, and Optimism. Flat fee: 0.0001 ETH.

Polygon - CCIP (full mesh) and CCTP. Flat fee: 2 POL.

Base - CCIP, CCTP, OP Standard, and WETH-via-CCIP to Ethereum. Flat fee: 0.0001 ETH.

Arbitrum One - CCIP, CCTP, WETH-via-CCIP to Ethereum, and Arb Canonical ETH deposits from Ethereum (native ETH, no CCIP fee - see Bridge Arbitrum ETH). Flat fee: 0.0001 ETH.

Optimism - CCIP, CCTP, OP Standard, and WETH-via-CCIP to Ethereum. Flat fee: 0.0001 ETH.

Avalanche C-Chain - CCIP and CCTP. Flat fee: 0.02 AVAX.

BNB Chain - CCIP only. Flat fee: 0.0003 BNB.

Unichain - CCIP, CCTP, and OP Standard. Flat fee: 0.0001 ETH.

Soneium - CCIP and OP Standard. Flat fee: 0.0001 ETH.

Ink - CCIP, CCTP, and OP Standard. Flat fee: 0.0001 ETH.

MegaETH - CCIP only. Flat fee: 0.0001 ETH.

Robinhood Chain​

Robinhood Chain (chainId 4663) is also live, alongside the 11-chain fleet above, but at its own divergent Diamond address (see Diamond & Facets). It's an Arbitrum Orbit chain that settles directly on Ethereum - not an OP-stack chain, so it has no Rail 1 (OP Standard) path.

RailCoverage
CCIP✓ - two lanes only (↔ Ethereum, ↔ Base)
CCTP (native USDC)-
OP Standard-
WETH via CCIP-
Arb Canonical ETH✓ - deposits only (Ethereum → Robinhood)
One-way today

Robinhood Chain has no WETH-via-CCIP lane, so Arb Canonical ETH is the only way to get native ETH there from Ethereum. The return trip isn't built yet: Robinhood → Ethereum native ETH has no SkyBridge path. ETH bridged in via Rail 5 stays on Robinhood until a withdrawal path ships.

EntryPoint: 0x63743c4c3E2bf2ae7958c7e79D265372Ef40E315. Full addresses (Diamond, EntryPoint, admin Safe) → Official Addresses.