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Well, Timelock Encryption is "encrypting somewhat towards the future", and as explained in the talk, in 1996 "Timelock puzzles" were proposed by Rivest, Shamir and Wagner as a "proof of work" based system to achieve it. Sadly that's very sensitive to hardware evolution, and when Rivest tried to create a puzzle meant to last 35 years in 99, it ended up being broken in 2019 after only 20 years. It was even doubly broken: once by a guy running it on his CPU for 3.5 years only, and once in only 2 months by a FPGA/ASIC implementation done by the Cryptophage collab between Ethereum Foundation, Supranational and Protocol Labs... Other names that are also about achieving timelock encryption include "timelapse encryption" and "timed release encryption". Some people do a distinction because for instance the timelock puzzle are mostly about achieving a lower bound on the time it requires to solve them but aren't mapping well to a precise time. VDFs are promising tools to achieve timelock or timed released encryption, for sure.


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