Holdout: a trading record you can verify

Most trading servers show results after the fact, and nobody can tell what was edited or deleted. Holdout works the other way around.

How it works

• Before each trade, the position is sealed with a SHA-256 hash and the hash is posted right away.
• The chain of hashes is timestamped in the Bitcoin blockchain with OpenTimestamps, so the time is a block time, not our clock.
• At the end of each month every position and salt is published, and anyone can recompute every hash with an open-source verifier.
• Every closed trade is posted with costs. Losing trades included. Nothing is deleted.

What you get for free

• The sealed hashes, posted before each entry
• Every closed result with costs
• The full daily position reports, 7 days after they are sealed
• The monthly reveal, so you can audit the whole record yourself

What is tracked

Systematic strategies on Nasdaq-100 futures (NQ / MNQ) and ETFs, admitted only after out-of-sample tests, a deflated Sharpe check, and a line-by-line match between the live code and the backtest.

Open-source ledger and verifier: https://github.com/holdoutgroot-tech/holdout-ledger

Paper-traded record. Not investment advice.