Dero is still an unsfinished project in alpha stage and you want use it like a bank system ? Come back in some years when everything will be stable with 0 risks and truly Open Source.
You are missing the point yet again, while simultaneously demonstrating that you have about zero understanding of blockchain.
Do you need the source code of your bank before you can have expectations of how it works? Much more important than the source is the protocol, and CryptoNote is widely documented. The DAG structure and P2P interface will soon be public. Then you can implement your own daemon that doesn't use the DERO canonical source code, and run it on the network. It is decentralized, and every coin is verifiable back to the genesis block. You don't need the source, or its history, to understand or participate in the network, if you have protocol documentation and an understanding of the crypto.
Your bank is a highly-regulated business, with clear and public identity, and fiduciary responsibility fully subject to law; its ledgers, irrespective of the software used to create and maintain them, are fully auditable going back as far as the law may require. Cryptonote, on the other hand, contrary to what captain is fond of suggesting, and contrary to what you blindly repeat above, was expressly designed to be opaque; you can know only the inputs and outputs for wallets to which you hold the keys. All transactions, and even their amounts in the case of RingCT, are opaque when viewing the public blockchain. It is only with full historical sources, therefore, that one can prove coins have not been minted out of thin air at any given point.