Demos
AccountMD is invite-only — so here's the work, in the open
Each demo is short, self-contained, and shows one feature you'd otherwise need an account to see.
Declarative & immutable accounting
InteractiveDeterministic ledger · audit trail
A book that never forgets — edit it, rewind it, and replay any past state. The core idea the whole engine is built on.
Delta-neutral strategy simulator
InteractiveScenario analysis · position tracking
Long spot + short perp stay delta-neutral through every price swing, so P&L is pure funding. Scrub 28 price points with a live trade ledger.
Declarative accounting, explained
ArticleThe approach
Why derive a ledger from rules and immutable events instead of hand-editing rows — infrastructure-as-code, for books.