Constant MAX_BLOCK_SIGOPS 

pub const MAX_BLOCK_SIGOPS: u32 = 20_000;

The maximum allowed number of legacy signature check operations in a block.

This consensus rule is not documented, so Zebra follows the zcashd implementation. We re-use some zcashd C++ script code via zebra-script and zcash_script.

See: https://github.com/zcash/zcash/blob/bad7f7eadbbb3466bebe3354266c7f69f607fcfd/src/consensus/consensus.h#L30