History is the full record: hours logged, blocks bought, credits and corrections, newest first.
Filters
Show one kind of entry at a time: what was bought this quarter, what was logged last week, what was corrected and when.
Each client also has their own history. Open it before a conversation about their balance.
Corrections
An entry is corrected, not deleted. The original stays, with the correction beside it. A client's balance never changes without a record of why.
What it is for
Seeing where your time went. And answering "what did I pay for?" with the entries themselves.