Instance Property

hash

The block’s identifying hash — always exactly 32 bytes in internal (kernel) byte order.

let hash: Data

Discussion

Internal order is the byte-reversed inverse of the display-order hex shown by block explorers. To render for humans, wrap this in BlockHash and read description. The hash is stable across any chain state that doesn’t orphan this specific block, which is why the whole BlockSource protocol uses hashes (not heights) to address blocks.