bitcoin/doc/release-notes-24098.md

Notable changes

Updated REST APIs

• The /headers/ and /blockfilterheaders/ endpoints have been updated to use a query parameter instead of path parameter to specify the result count. The count parameter is now optional, and defaults to 5 for both endpoints. The old endpoints are still functional, and have no documented behaviour change.

  For /headers, use GET /rest/headers/<BLOCK-HASH>.<bin|hex|json>?count=<COUNT=5> instead of GET /rest/headers/<COUNT>/<BLOCK-HASH>.<bin|hex|json> (deprecated)

  For /blockfilterheaders/, use GET /rest/blockfilterheaders/<FILTERTYPE>/<BLOCK-HASH>.<bin|hex|json>?count=<COUNT=5> instead of GET /rest/blockfilterheaders/<FILTERTYPE>/<COUNT>/<BLOCK-HASH>.<bin|hex|json> (deprecated)

  (#24098)