The decentralised storage used in the platform is a Hyperledger BESU network which uses the IBFT 2.0 (Proof of Authority) consensus protocol. In this network, there are 4 validator nodes based on the genesis configuration stored in the corporative Nexus. In this configuration, there are 3 accounts to be used by the i3-MARKET federation.
The federated search engine index service uses the Hyperledger BESU blockchain as its storage backend. For this purpose, a smart contract storing the endpoints of all SEED instances along with the associated data categories has been deployed on the blockchain.
In this scenario, different components like auditable accounting, SEED Index, etc. are capable to deploy and manage smart contracts and transactions over those accounts.