Just putting it out here for those of you who, like me are very new in ECDSA Secp256k1 and wondering how to calculate the signatures or need hte formulas.
The M here means the same as Z signature in bitcoin transaction ..so input your Z in the M boxes. Most importantly, the formulas are given there as well.
why does different people call it Z, M or sometimes even call it H(m). i have no idea. confusing for me too earlier on but i caught up.
https://rawcdn.githack.com/nlitsme/bitcoinexplainer/aa50e86e8c72c04a7986f5f7c43bc2f98df94107/ecdsacrack.htmlFor those of you who needs to decompress your public key and get the XY Coordinates,
https://github.com/RoyNahar/bitcoin-public-key-decompress-tool