Private ledgers on a MultiChain Blockchain Network

Question

We are exploring one use case to connect a million customers with a bank. Since customers' transactions should be private to them, we want to understand whether we can have concept of private ledger on the customer nodes.

The transaction must be added only to the ledgers of the transacting nodes.

So for instance we have two customers Alice and Bob. Alice transacts(Debit) using the bank's system for $5 and Bob transacts (Debit) using bank's system for $10.

So the ledgers should look like.

Alice: Debit $5 (Transaction on Block) Bob: Debit $10 (Transaction on Block)

Bank: Debit $5 Debit $10 (Shows both transactions on the Bank's Node)

Answer 1

If you want this kind of privacy, where some transactions are completely hidden from some users, then a blockchain is not the right architecture for you. You might want to take a look at the Corda project by R3.