Warning: Using "pending", while allowed, is not advised, as it may lead
to internally inconsistent results. Use of "latest" is safe and will not
lead to inconsistent results from a single decoder call due to the decoder's
caching system, but pending blocks cannot be cached under this system, which
may cause inconsistencies.
Specifies a block. Can be given by number, or can be given via the special strings "genesis", "latest", or "pending".
Intended to work like Web3's BlockType.
Warning: Using "pending", while allowed, is not advised, as it may lead to internally inconsistent results. Use of "latest" is safe and will not lead to inconsistent results from a single decoder call due to the decoder's caching system, but pending blocks cannot be cached under this system, which may cause inconsistencies.