[ethereum/go-ethereum] Ethereum Anchoring (#17499)

Actually Anchoring means:-
The block hashes of a private chain are periodically written into a public chain. For this purpose, not all block hashes have to be transmitted; for example, a daily match is sufficient. In the case of a manipulation within the private chain, it is possible to know which blocks can be trusted and when a manipulation has occurred. The only transmitted information is the block number and the associated block hash.