Add Block.prototype.getParentId

[dcousens]

Thoughts @afk11 ?

Or maybe we should re-think and go with a uint256 type that prints in reverse byte order... 🤷‍♂️

[afk11]

Just had a quick look, we could do that.. if people decoded block hex I could them being confused why bitcoind can't find the prevBlock. (and the target comparison would also fail) The merkleRoot might also be worth doing as well so it's in the representation you'd compare against.

Maybe worth splitting out the header into another object at the same time? Could put things like verifyMerkleBranch on the header, leaving calculateMerkleRoot where it is for people with the full block.

Edit: don't think I've ever had a need to distinguish the hash from the reversed one, always just returned the latter

[dcousens]

@afk11 you use the non-reversed hash when you're using it cryptographically... about it.

[dcousens]

I don't think this is ever going to be convenient.