As the founder of OpenTimestamps I wanted to say you're analysis is absolutely correct. People often don't realize how weak timestamp proofs are - you really ne

As the founder of OpenTimestamps I wanted to say you're analysis is absolutely correct. People often don't realize how weak timestamp proofs are - you really need to think carefully about what exactly is being proved by one and take into account the "timestamp all the things" attack. This is particularly true in efficient, scalable, timestamping solutions like OTS where timestamps are essentially free to create: an attacker could write a script to create via brute force literally trillions of alternate variations of a prediction.