Bases
What does this bDNhcm5fdGgzX3IwcDM1 mean? I think it has something to do with bases.
Decode the text from Base64.
Base64 represents bytes using printable characters. It is an encoding rather than encryption, so decoding it restores the text without a secret key.
The answer was picoCTF{l3arn_th3_r0p35}.
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