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Solayer Chain includes a bi-directional native bridge and a cross-chain contract execution model. This enables asset transfers, function calls, and atomic interactions between Solana and Solayer Chain.

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Native Bridge

The native bridge inside the sequencer handles message and asset transfers between Solana and Solayer Chain. Re-org resilience via an insurance fund:
  • If the total value of relayed assets (measured via oracle) is below the insurance fund size, assets are immediately available on Solayer Chain
  • If the value exceeds the fund, assets are released post-finalization
Relay options:
  • Users can relay messages instantly (accepting re-org risk) or post-finalization via a transaction flag
  • Upon asset availability, the receiver hook is automatically invoked for further program execution

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Cross-Chain Contract Execution

Solayer Chain uses account mirroring for cross-chain program calls. Each program and account has a corresponding Program Derived Address (PDA) on Solana. MainnetCall instruction:
  • Programs can transfer funds, dispatch cross-chain function calls, and execute logic spanning both networks in a single atomic operation
  • The MainnetCall instruction routes execution to its PDA on Solana
Re-org resilience:
  • MainnetCall never reverts, even if the Solana transaction fails
  • Calls are placed at the end of a transaction to prevent re-org inconsistencies
  • If a re-org occurs, the Solana transaction is rebroadcast until finalization

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Use Cases

  • Single-transaction cross-chain swaps — swap assets between Solana and Solayer Chain atomically
  • Yield vault rebalancing — automatically rebalance assets across both networks
  • Cross-chain DeFi — liquidity pooling, lending, and staking across both networks without fragmented liquidity