Most likely Hyperledger could integrate the Ethereum blockchain. If so, this would be the first public blockchain to be hosted by this platform. Reaching this goal is very complex, and also the history to reach such a decision. It all started with one proposal made by ConsenSys who proposed to Hyperledger to adopt the Pantheon project, with a suite of services that are created by PegaSys and therefore based on the Ethereum blockchain.
Il Pantheon client instead is based on Java and is used to be able to develop business-type applications with various features to manage both permissions and privacy. The 50 engineers who make up the Pantheon team consequently are also members of the ConsenSys. On August 8 of last year, ConsenSys sent the proposal to the Hyperledger mailing list to adopt the Pantheon client. However, the consortium members have not yet decided whether to accept the proposal made by ConsensSys, but it has been decided that in case of acceptance, the client will be renamed to Hyperledger Besu.
Consequently, if the proposal were accepted, then the Hyperledger project could use the Ethereum blockchain through the client offered by Pantheon. Furthermore, this would therefore allow the union of two blockchains diversand among them as Hyperledger Sawtooth of Intel e Hyperledger Fabric of IBM.
At the moment, Hyperledger does not use any public blockchain, consequently the entry of Pantheon would lead to the addition of a project to the first public blockchain like that of Ethereum.
The same Pantheon open source code would therefore be published on Hyperledger's GitHub page in such a way as to be open to all developers who are involved in the project. Pantheon also uses private and test networks such as Ropsten, Rinkeby and Gorli.
An approach between Ethereum and Hyperledger however, there had already been in the past with the Burrow initiative and the consortium collaboration with the Enterprise Ethereum Alliance. The specific advantages that one decentralized and public blockchain can guarantee that they cannot be replicated with private blockchains, for this reason it is logical that an enterprise consortium like this also consents to the use of public blockchain in addition to those in use.
Furthermore, it is no coincidence that it could be right there blockchain of Ethereum to be integrated into this project, since this is the one on which a definitive number of smart contracts run.