# Matchstick Replay

> Matchstick Replay is a browser-based product for inspecting deterministic replays of structured market events.

The app focuses on a Level 2 order book, includes synthetic BTC/USD sample sessions, and imports your own recorded Tardis.dev order-book files and OpenCandle V1 sessions, which stay in the browser. Matchstick also maintains OpenCandle V1, a versioned candle interchange boundary with object and compact tuple encodings for APIs, tools, and LLM-oriented workflows. The Time Travel Engine (TTE) name is an internal codename, not the public product name.

To avoid mix-ups: Matchstick Replay is software for replaying recorded order-book data in your browser. It is not a trading platform and does not place orders. It is not the barter challenge of the same name, and it is not about candlestick charts.

## Product

- [Matchstick Replay](https://app.matchstick.trading/): Explore the order-book replay interface without an account.
- [OpenCandle V1](https://matchstick.trading/opencandle/): Review the open candle schema and supported representations.
- [Order-book replay in your browser](https://matchstick.trading/docs/order-book-replay-in-your-browser/): What order-book replay is and how to step through a recorded order book for free.
- [Matchstick home](https://matchstick.trading/): Product overview and contextual feedback form.

## Policies and contact

- [Privacy](https://matchstick.trading/privacy/): Data and privacy policy.
- [Terms](https://matchstick.trading/terms/): Terms of use.
- Contact: hello@matchstick.trading

## Accuracy notes

- The built-in sample sessions use synthetic market data.
- Determinism means the same retained, ordered events and timestamp reconstruct the same canonical state.
- Matchstick Replay does not currently claim execution simulation or investment advice.
- This file is a concise navigation aid for agents. It does not override robots.txt or grant content-training rights.