base58 package

Package base58 ports the core of Bitcoin's Base58 codec (à la mr-tron/base58 and btcutil/base58) to a gno.land realm.

Base58 is a base conversion from base-256 (raw bytes) to base-58 using an alphabet that omits the visually ambiguous characters 0 (zero), O (capital o), I (capital i) and l (lower L). The conversion here is done with pure byte-slice math — the classic div/mod-by-58 carry loop — so it needs no math/big. Leading zero bytes map to leading '1' characters and back, exactly like the reference implementations.