Source that is unlocked after a time

https://link.springer.com/article/10.1007/s10623-018-0461-x#:~:text=Time%2Dlock%20encryption%20is%20a,a%20certain%20deadline%20has%20passed.&text=We%20propose%20a%20new%20construction,security%20without%20relying%20on%20obfuscation.

https://stackoverflow.com/questions/11416803/time-based-encryption-algorithm

https://crypto.stackexchange.com/questions/59445/time-based-encryption

https://en.m.wikipedia.org/wiki/Transient-key_cryptography

https://patents.google.com/patent/US20030099360A1/en

https://cboard.cprogramming.com/c-programming/177136-time-based-encryption.html

https://memento.epfl.ch/event/time-based-cryptography/

https://www.gwern.net/Self-decrypting-files