2 ms·

My mind immediately went to adversarial fixing of all sports games and the stock market in order to create a collision. Sports sports are an interesting source

• 3eb7988a1663 2y ago
  If you are looking to prove that something happened after a certain timestamp, you can use a randomness beacon[0]. Every <interval>, the beacon outputs a long random number. Include the timestamped random number into your artifact. You are relying upon the authority of the beacon to be random, but good practice is to utilize multiple independent beacons. [0] https://csrc.nist.gov/projects/interoperable-randomness-beacons https://csrc.nist.gov/projects/interoperable-randomness-beac...