4 ms·
You can publish the hash in some durable medium, like the classified section of a newspaper. This proves you generated it before this time. You can also inclu
by mlyle 2y ago
You can publish the hash in some durable medium, like the classified section of a newspaper.
This proves you generated it before this time.
You can also include in the hash the close of the stock market and all the sports scores from the previous day. That proves you generated it after that time.
- ethbr1 2y agoMy 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 of entropy.
- 3eb7988a1663 2y agoIf 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...