Dev Tools · 1h ago
OpenTimestamps Uses Bitcoin to Prove Predictions Were Made Before Events
OpenTimestamps anchors document hashes on the Bitcoin blockchain to create tamper-proof timestamps. Users hash a file locally, submit it to a free aggregator, and the hash is embedded in a Bitcoin transaction. This allows anyone to verify a document existed before a specific time without revealing its contents.
Meridian48 take
The technique elegantly solves the look-ahead problem for forecasting, but its reliance on Bitcoin transaction fees and confirmation times may limit practical scalability.
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How to Prove a Prediction Was Made Before the Event (with OpenTimestamps) →
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