diff --git a/dev-scratchpad.md b/dev-scratchpad.md
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+
+## base58
+Converts a base58 zpub to hex
+```
+=zpub-atom (de-base58:mimes:html "zpub6rFR7y4Q2AijBEqTUquhVz398htDFrtymD9xYYfG1m4wAcvPhXNfE3EfH1r1ADqtfSdVCToUG868RvUUkgDKf31mGDtKsAYz2oz2AGutZYs")
+=zpub-bytes (turn (flop (rip 3 zpub)) |=(a=@ `@ux`a))
+```