Knowledge Base 1.0

Knowledge Base 1.0 is the work of months carefully building a quality Polyglot database with analyzed positions by top engines, mainly by Stockfish 12 and Stockfish 13 covering about 95% of the general opening theory. The estimated total computer time roughly is about 8 years 24/7 single cpu time limited to 5 real months 24/7 due to the use 2 powerful PC's with many cores. The average quality of of the 94 million analyzed positions is around ~3300 elo. The database contains a wealth of information for opening study and for correspondence players. Knowledge Base is made available for SCID for easy browsing through the Polyglot database by clicking on the moves.

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http://rebel13.nl/home/scid-with-knowledge-base.html

Can the book be used to blunder check pgn games with Annotator? Is it an analyzed book?

From the page - Note that knowledge.bin also can be used with ProDeo Knowledge and PGN Annotator.