Interoperable Multi Chain Architectures: Cross-Domain Smart Contract Orchestration through Atomic Swaps and Relayers

Abstract

Abstract: Heterogeneous blockchains silo value and logic, hampering complex workflows that span finance, supply chains, and identity. This paper unifies disparate ledgers via a relayer network that leverages hashed time locked atomic swaps for asset transfer and a meta smart contract layer for event choreography. Developers write orchestration logic once in Web Assembly; relayers translate calls into native contracts on Ethereum, Hyperledger Fabric, and a Polkadotparachain, anchoring state roots periodically onto a neutral checkpoint chain. Stress tests of a three chain escrow protocol showed near linear scaling to 11?000 concurrent swaps, with average cross chain finality under 58?seconds. Security proofs formalise liveness and atomicity even with up to one third Byzantine relayers. The architecture’s openness invites specialised sidecars—oracle bridges, compliance scanners—without compromising minimal trust design.

Keywords: Cross Chain Interop, Atomic Swap, Realer Network, Meta Contracts, WebAssembly