@WanderingPhilospher

Let G = secp256k1_generator_point

Edit:
Let LSB = 128 lower bits of the x-coordinate

(0x0000000024a2b6bb0000000026dd90e3)*G = 0x1bfbfb9e55b617f03ad44aabe7545c1aad8ac86776cf2b3ba9bc5d0eb1002f99

Doesn’t match the LSB of the x-coordinate from your tame line data, maybe try a few more random points from the file. I was able to validate 10,000 points from my file without any errors.

Yes, you should be able to solve the key when there is a match from the files. But you will also need the beginning range that was used to solve for the original key. We only need to find out if there’s a match of the LSB of the x-coordinates from both types of kangaroos, then we can use the distances and the beginning range to calculate the private key.