# `gno.land/p/moul/x/daily/b58/v0`

**Base58 (Bitcoin alphabet) codec** — `Encode`, `Decode`, `IsValid`, `Alphabet`.

Pure byte-slice math (the classic div/mod-by-58 carry loop), no `math/big`;
leading zero bytes ↔ leading `1`s. Ported from `mr-tron/base58` / `btcutil/base58`.

```go
import "gno.land/p/moul/x/daily/b58/v0"

s := b58.Encode([]byte("hello"))  // "Cn8eVZg"
b := b58.Decode(s)                // []byte("hello") (nil if s has a non-alphabet char)
```

**Live demo:** [`r/moul/x/daily/b58demo`](https://github.com/moul/gno-contracts/tree/main/r/moul/x/daily/b58demo/v0)
· render it at [`/r/moul/x/daily/b58demo/v0`](https://gno.land/r/moul/x/daily/b58demo/v0).

<!-- BEGIN GNOCONTRACTS FOOTER (generated by `make readmes`; do not edit below) -->

---

Part of **[moul/gno-contracts](https://github.com/moul/gno-contracts)** — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.

> 🧪 **Highly experimental — potentially vibe-coded.** Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: [DISCLAIMER](https://github.com/moul/gno-contracts/blob/main/DISCLAIMER.md).

<!-- END GNOCONTRACTS FOOTER -->