This has always existed. You disclose the idea. Things that are public cannot be patented.
Put your great idea up on arxiv and it becomes prior work which the patent office can find. Or publish it in some conference. Etc. It gets officially timestamped and you're all done. You don't need any of this useless verifiable chain of communication nonsense. The world figured out how to do this centuries ago in far simpler ways.
Whether the patent office finds your prior art or not, that's a whole other question. They may still grant a patent no matter how obviously it overlaps with prior art. But then you can use your prior art when they come to try and shake you down, if it comes down to that.
Put your great idea up on arxiv and it becomes prior work which the patent office can find. Or publish it in some conference. Etc. It gets officially timestamped and you're all done. You don't need any of this useless verifiable chain of communication nonsense. The world figured out how to do this centuries ago in far simpler ways.
Whether the patent office finds your prior art or not, that's a whole other question. They may still grant a patent no matter how obviously it overlaps with prior art. But then you can use your prior art when they come to try and shake you down, if it comes down to that.