@lostbitcoin
You can make pair of same R ? if yes can you paste me 2 different S and Z and 1 R ?
What you demonstrated is quite exciting for my understanding on "secp256k1", only private key should be able to make R,S and Z or M is double sha2 of transaction data.
Please use same public key which you posted on first post.
It is easy to generate a single RSZ value using the same R value.
I made a second S, but the Z value is still under study.
I didn't make it by luck, I made it by a mathematical formula.