Look into ways to cross-verify implementation

[pipermerriam]

What is wrong?

https://github.com/ethereum/py_ecc/issues/24#issuecomment-445506905

This is a little frightening (no blame intended). It would be great if we could come up with a way to cross check this implementation with a known good one or at least to have some additional static test vectors we could test against.

How can it be fixed

Look into what other implementations exist and how we could use them in a CI environment or manually extract some test vectors from them.

[Bhargavasomu]

I'd say https://github.com/adjoint-io/pairing could be a good start.

[carver]

Related: #7