Accounting principals within STROMDAO Energy Blockchain is mainly handled by a concept called Stromkonto (Power Account Statement).
Within this experience accounting rules of a smart contract at
0x19BF166624F485f191d82900a5B7bc22Be569895 will be used.
As long as there are no transactions recorded liability and equity will be zero.
If you are owner of the smart contract, you are allowed to add transactions manually. This will change the balance accordingly.
A Blockchain is not a database. In order to retrieve past transactions you need to query events from older blocks. The STROMDAO Business Object provides a history function to get last transactions