BASE58(1)
base58 - Base58 encode or decode
base58 [options...] [FILE]
-h, --help Show help message and exit.
-d, --decode Decode data instead of encoding
-c, --check Calculate a checksum and append to encoded data or verify existing checksum when decoding
Base58 encode or decode FILE (or standard input) to standard output. Optionally a checksum can be used that is given by the first 4 bytes of the digest after two passes of sha256.