Supported source chains
Any chain with USDT0 can bridge to Stable via the OFT Mesh. Any chain with native USDT can route through the Legacy Mesh via the Arbitrum hub. Current participants:
Ethereum and Arbitrum support both paths: users holding native USDT can use the Legacy Mesh, while users holding USDT0 can use the OFT Mesh directly.
Contract addresses
For the full testnet contract list (LayerZero endpoint, DVN, executor), see Testnet ecosystem contracts.
STABLE OFT contracts
The STABLE token bridges to other chains using the LayerZero OFT standard. The adapter on Stable locks STABLE for outbound transfers; the upgradeable proxy on each remote chain mints and burns the wrapped supply. For the security model and a description of each contract’s role, see Bridge security and DVNs.The remote chain addresses differ even though both are EVM-compatible. Activating the destination address on HyperCore requires a transaction, which advances the deploy nonce and produces a different deterministic address than BSC. See stablelabs/chain-oft for the canonical config.
Stable’s DVN operators
Stable’s bridges run a 3/3 required DVN configuration: three independent operators must each sign every cross-chain message before it is accepted. There is no optional pool. The three required signers and their DVN contract addresses:
For the on-chain config per pathway, see LayerZero deployed contracts. For the security rationale, see Bridge security and DVNs.
Bridge providers
LayerZero
Cross-chain messaging protocol powering USDT0 OFT burn/mint transfers with dual DVN verification. Capabilities- OFT-standard burn-on-source, mint-on-destination transfers
- Dual DVN (Decentralized Verifier Network) message verification
- Powers both OFT Mesh and Legacy Mesh paths
Stargate
Liquidity pool-based bridge optimized for stablecoin routing. Capabilities- Unified liquidity pools across chains
- Stablecoin-optimized routing
- Instant guaranteed finality
Gas.Zip
Liquidity routing protocol supporting fast transfers across 350+ chains. Capabilities- Cross-chain liquidity routing
- Fast finality
- Broad chain coverage (350+ chains)
LiFi
Bridge aggregator routing transfers across multiple bridges and DEX swaps. Capabilities- Multi-bridge route optimization
- SDK and REST API integration
- DEX swap aggregation
Polymer
IBC-based cross-chain messaging for Ethereum-native chains. Integration in progress. Capabilities- IBC protocol messaging on Ethereum
- Native interoperability without external validators
Relay
Intent-based bridge with gasless execution via a solver network. Integration in progress. Capabilities- Intent-based bridging
- Gasless execution for users
- Solver network settlement
Fee structure
Have a bridge integrating Stable? Reach out at bizdev@stable.xyz.