A puzzle cache based on an idea that didn't work out.
Sometimes I come up with clever ideas for solving puzzles that have nothing to do with the clever idea the puzzle creator had. I thought I might get some use of of those ideas by turning them into puzzles of my own. That way I get to be right.
See if you can unscramble this one.
5625429912375102365932895817377832253534389924959574561986888970232
You can validate your puzzle solution with certitude.
[ Puzzle hint: ] svaq 10 qvtvgf, abg 15
[ Hide hint: see Certitude ]