Datachain and SORAMITSU have started a technology collaboration to achieve interoperability through Cosmos' IBC in Hyperledger Iroha.
We have prepared two different blockchains built on Hyperledger Iroha and digital currencies on each blockchain in this initiative. To connect the blockchains to each other, we use YUI and the IBC protocol which allows the digital currencies on each blockchain to exchange simultaneously (atomic swap).
Technically, as Hyperledger Iroha has EVM compatibility, we use IBC-Solidity (the Solidity implementation of IBC), which Datachain is developing with a grant from the Interchain Foundation. On top of that, we will support ICS-20 (the standard for token transfer in IBC) in Hyperledger Iroha, as well as design and implement a Relayer that connects Hyperledger Iroha blockchains.
The IBC support in Hyperledger Iroha will be implemented as part of work being done to advance YUI within the Hyperledger Labs.