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Hypothetical Post-Merge Ethereum cross chain bridge# Hypothetical Post-Merge Ethereum cross chain bridge
Ethereum ecosystem is currently moving towards a multi-chain environment. This both includes work on the sharding as part of the ETH2.0, as well as appearence of different side chains and rollups independent of Ethereum Mainnet. One of the basic needs for a multi-chain environment, is an existence of a secure communication channel between the chains.
This post is a high-level description for the cross-chain bridge between two independent ETH2.0 chains and their respective execution layers (e.g. a bridge between ETH2.0 and SBC).
The implementation phase will start as soon as possible, this post will be updated once more details are known.
Assumptions
latest_execution_payload_header
in https://github.com/ethereum/consensus-specs/blob/dev/specs/merge/beacon-chain.md#beaconstate)Operation Model
Data transfer sequence diagram
This is a high-level example for the ETH1.0 -> xDAI data transfer in the post-merge environment. However, an exact underlying chains can be freely interchanged by any other chains conforming to the initial requirements.
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