In `rust-bitcoin` the `blockdata` module is a code organisation thing, it should never have been public. One day those guys would like to remove it, so as not to be a PITA for `bdk` when they do lets remove all usage of `blockdata::` now. Internal change only, no externally visible changes.
Bitcoin Dev Kit Nursery
This is a directory for crates that are experimental and have not been released yet.
Keep in mind that they may never be released.
Things in /example-crates
may use them to demonstrate how things might look in the future.