Should I even try ?

[huffer]

Hi,I have my bitcoin address and then I wrote down the compressed key in pencil,I can read the first 34 characters then a gap and then I can read then 5 characters,is this even worth my time trying to figure this out with a 11 character gap,I know it's not really a hashcat question but you guys here will know,thanks.

[undeath]

11 characters in base58 or hex? It might just be enough. But if a fair amount of bitcoin is involved you could throw some money at someone with a good microscope. There might be enough pencil residue left to reconstruct the missing letters and it will probably come cheaper than bruteforcing them.