Bridging
$NEX moves between Ethereum and BSC via a Hyperlane Warp Route. On Ethereum, $NEX is locked in a collateral contract. On BSC, a synthetic $NEX is minted 1:1 against the locked balance.
You can bridge $NEX between Ethereum and BSC: Nexus Hyperlane Warp Route.
Ethereum → BSC
Deposit ERC-20 $NEX into the Hyperlane collateral contract on Ethereum.
Hyperlane validators attest to the deposit (6-of-9 multisig threshold).
Synthetic $NEX is minted on BSC and delivered to your wallet.
BSC → Ethereum
Synthetic $NEX is burned on BSC.
Hyperlane validators attest to the burn (4-of-6 multisig threshold).
ERC-20 $NEX is released from the collateral contract on Ethereum and delivered to your wallet.
Contract addresses
Warp Route token
0xb71183f48F7f7789D40551149bE28a51f9A97F9A (collateral)
0x365DE036A1F7dcCb621530d517133521debB2013 (synthetic)
$NEX ERC-20
0xf57D49646621F563b0B905aFc8336923AC569Ec5
—
Hyperlane Mailbox
0xc005dc82818d67AF737725bD4bf75435d065D239
0x2971b9Aec44bE4eb673DF1B88cDB57b96eefe8a4
The collateral contract is a TransparentUpgradeableProxy pointing to the Hyperlane canonical HypERC20Collateral implementation. The BSC synthetic is a TransparentUpgradeableProxy pointing to the Hyperlane canonical HypERC20 implementation. Both are verified on Etherscan and BscScan.
Fees and timing
Bridge fee (ETH → BSC)
6 bps + gas fees on both source and destination chains
Bridge fee (BSC → ETH)
Gas fees on both source and destination chains
Transfer time
Typically under 5 minutes. Depends on validator attestation and source-chain finality.
Security
The bridge uses Hyperlane's Interchain Security Module (ISM) stack:
ETH → BSC: 6-of-9 validator multisig with dual MerkleRoot and MessageId verification.
BSC → ETH: 4-of-6 validator multisig with dual MerkleRoot and MessageId verification.
Both warp route contracts are owned by the Nexus Foundation multisig. Proxy upgrades are controlled by the Foundation multisig via OpenZeppelin ProxyAdmin contracts.
Troubleshooting
Transfer pending — Transfers require attestation from Hyperlane validators after source-chain finality. If pending for more than 10 minutes, check the Hyperlane Explorer.
Insufficient gas — You need gas tokens on the source chain: ETH for Ethereum → BSC, BNB for BSC → Ethereum.
Transaction reverted — Check that you have approved sufficient token allowance for the Warp Route collateral contract (Ethereum side) and have enough gas on the source chain.
For Hyperlane protocol details, see Hyperlane documentation.
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