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This could be implemented via blockchain too , where in you can prove that you had posted the idea before a certain block was mined. Timestamping blocks can be

This could be implemented via blockchain too , where in you can prove that you had posted the idea before a certain block was mined. Timestamping blocks can be done via schilling coin based oracle.

tjpnz 4y ago
I think it's already a thing. See proof of existence.
olejorgenb 4y ago
https://opentimestamps.org/ https://opentimestamps.org/ use the same idea (using a merkle tree to make it cheap per document) with the bitcoin.
gusan 4y ago
Here is a rough one I wrote that uses Optimism (Ethereum Layer2) https://sonotoki.org/ https://sonotoki.org/