Bridge Assets via Stargate
Stargate is a cross-chain liquidity protocol built on LayerZero. It is the primary bridge for ZEN, USDC.e, and cbBTC on Horizen, supporting transfers across 80+ chains.
ZEN and cbBTC use the LayerZero OFT (Omnichain Fungible Token) standard — burned on the source chain and minted on the destination. USDC uses Stargate's lock/mint model - USDC is locked on Base and USDC.e is minted on Horizen.
Supported Tokens
The following tokens are supported on Horizen via Stargate:
| Token | Horizen Contract | Bridge Mechanism |
|---|---|---|
| ZEN | 0x57da2D504bf8b83Ef304759d9f2648522D7a9280 | OFT (burn/mint) |
| USDC.e | 0x3a1293Bdb83bBbDd5Ebf4fAc96605aD2021BbC0f | Lock/Mint |
| cbBTC | 0x68fb5BB8330C0b9d907F50f278143873276ee056 | OFT (burn/mint) |
ZEN on Horizen and Base share the same OFT contract address (0x57da2D504bf8b83Ef304759d9f2648522D7a9280) — this is expected behavior for the OFT standard.
Bridge via the Stargate UI
Prerequisites
- A wallet with funds on your source chain (e.g., ETH for gas on Base or Horizen)
- The token you want to bridge
Steps
- Go to stargate.finance
- Connect your wallet
- On the Transfer page, select your source chain and token
- Select Horizen as the destination chain (or vice versa)
- Enter the amount to bridge
- Review the estimated fee and receive amount
- Click Transfer and confirm the transaction in your wallet
Stargate offers two transfer modes:
- Simple - sends assets to your same connected wallet address on the destination chain. Use this for most cases.
- Advanced - lets you specify a custom destination address. Use this if you're bridging to a different wallet.
Fees
Stargate charges a protocol fee of 0.06% per transfer. You will also pay gas on the source chain. No gas is required on the destination chain.
Transfer time
Most transfers complete in under 2 minutes, depending on source chain finality.
Slippage
Stargate uses unified liquidity pools. For stable assets like USDC, slippage is typically negligible. You can configure slippage tolerance in Advanced Settings on the transfer page.
- Low slippage (0.1%) — protects against price changes but may cause the transaction to fail in low-liquidity conditions
- High slippage (1–3%) — more likely to succeed but you may receive slightly fewer tokens
For ZEN and cbBTC (OFT standard), slippage does not apply — the burn/mint mechanism guarantees you receive the exact amount minus the protocol fee.
LayerZero OFT Contract Addresses
For developers integrating token bridging directly, here are the full contract references:
Mainnet
| Token | Chain | OFT Contract |
|---|---|---|
| ZEN | Base | OFT Adapter: 0x57da2D504bf8b83Ef304759d9f2648522D7a9280 |
| ZEN | Horizen | OFT: 0x57da2D504bf8b83Ef304759d9f2648522D7a9280 |
| USDC | Base | Lock contract: 0x27a16dc786820B16E5c9028b75B99F6f604b5d26 |
| USDC.e | Horizen | OFT: 0x3a1293Bdb83bBbDd5Ebf4fAc96605aD2021BbC0f |
| cbBTC | Base | OFT Adapter: 0x68fb5BB8330C0b9d907F50f278143873276ee056 |
| cbBTC | Horizen | OFT: 0x68fb5BB8330C0b9d907F50f278143873276ee056 |
Testnet (Base Sepolia ↔ Horizen Testnet)
| Token | Chain | OFT Contract |
|---|---|---|
| tZEN | Base Sepolia | OFT Adapter: 0x2ead4B0beBD8e54F9B7cC1007DF4c44a27b9a339 |
| tZEN | Horizen Testnet | OFT: 0xb06EC4ce262D8dbDc24Fac87479A49A7DC4cFb87 |
| cbBTC | Base Sepolia | OFT Adapter: 0x5dE29d14E72feb79967596F3Ae57A9BfBA192769 |
| cbBTC | Horizen Testnet | OFT: 0x06DA6bDD2aB23447af5162ab0975edDA7E8d3747 |