Data is securely stored and processed in the HARA data exchange platform. A combination of IPFS permanent web, Bluezelle protocols, and Amazon web services (S3 and Dynamo DB) will be implemented as data storage systems off the chain.

Proof of existence smart contract is deployed in the blockchain to ensure data is tamper-proof and uncompromised. Every data is signed with fingerprint-like proof. If the data is changed, then the associated fingerprint will also change. To verify the data, the fingerprint must match or it is considered as tampered. Nevertheless, data providers should also ensure that a safe and reliable data storage and accessible mechanism is maintained.