As I am currently debugging PoW in my Python implementation, I prepared some runnable examples in multiple languages for PoW verification. They are using real mainnet blocks as test data. I decided it might be useful for someone so I put it in public repository.
If anyone wishes to support my weekend code grinnin’ here’s my wallet listener address
grin1vcjsgk6rltncqh7cxjywukjfrf825d8a6xk77msfuhf9ev3r55wq7l2ng4
Happy PoW verification! Cheers!