Cross-chain between a Parent Chain and Multiple Side Chains

TL;DR

This paper proposes a cross-chain mechanism enabling secure token transfer between a main blockchain and multiple side chains, enhancing interoperability and scalability in blockchain systems.

Contribution

It introduces a novel cross-chain protocol with witness management and decoupled consensus, facilitating secure multi-chain token exchanges and coexistence of tokens.

Findings

Secure token transfer across chains demonstrated

Decoupled consensus improves scalability

Witness system ensures transaction integrity

Abstract

In certain Blockchain systems, multiple Blockchains are required to operate cooperatively for security, performance, and capacity considerations. This invention defines a cross-chain mechanism where a main Blockchain issues the tokens, which can then be transferred and used in multiple side Blockchains to drive their operations. A set of witnesses are created to securely manage the token exchange across the main chain and multiple side chains. The system decouples the consensus algorithms between the main chain and side chains. We also discuss the coexistence of the main tokens and the native tokens in the side chains.