NewBlock creates a Block object from opaque data.

NewBlockWithCid creates a new block when the hash of the data is already known, this is used to save time in situations where we are able to be confident that the data is correct.

ErrWrongHash is returned when the Cid of a block is not the expected according to the contents.

A BasicBlock is a singular block of data in ipfs.

Block provides abstraction for blocks implementations.