Your database keeps the present. Hindsight keeps the past.

Version control for your data. Every row in your Postgres database has a history. Hindsight keeps it, and gives you four operations over any row, at any past moment.

• logwhat happened to this row?
• diffwhat changed between then and now?
• blamewho set this field, and when?
• checkoutwhat did this row look like on that date?

Your app knows who acted. Your database knows what changed. Hindsight joins the two into one durable, verifiable record.

Hindsight observes; it does not interpret. Your source database stays the system of record.