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docs: Distinguish handwritten look-alikes #134

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1 change: 1 addition & 0 deletions docs/user/guide.md
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Expand Up @@ -71,6 +71,7 @@ You will need:

Before running `create` for a real wallet, have your blank cards, a pen, and
wallet record ready, and choose separate trusted places for shared cards.
When handwriting recovery text, follow the card legend: stroke S, slash 0, cross Z and 7, and give 5 a flat top; O, I, and B are not codex32 characters.

@chatgpt-codex-connector chatgpt-codex-connector Bot Oct 7, 2026

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P2 Badge Wrap the new documentation lines

This added guide line is 152 characters, and the parallel recovery-card legend is 210 characters, so both exceed the repository's 110-character limit and depart from the wrapped style used by the surrounding documentation. Wrap both additions into shorter source lines without changing their rendered prose.

AGENTS.md reference: AGENTS.md:L54-L59

Useful? React with 👍 / 👎.

If you want to try the process first, use the signet practice setup below.

Run Bitcoin Core before starting. If practical, disconnect the computer from
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1 change: 1 addition & 0 deletions docs/user/recovery-card.html
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Expand Up @@ -48,6 +48,7 @@ <h2>Protected codex32 text — copy exactly in four-character groups</h2>
<span class="group"></span><span class="group"></span><span class="group"></span><span class="group"></span>
</div>
<p class="small">Leave unused boxes blank.</p>
<p class="small"><strong>Handwriting legend:</strong> draw S with a vertical stroke ($), slash 0, cross Z and 7, and give 5 a flat top. O, I, and B are not codex32 characters; a written O can only mean 0.</p>

@chatgpt-codex-connector chatgpt-codex-connector Bot Oct 7, 2026

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P2 Badge Limit the excluded-letter claim to the data part

For generic codex32 artifacts, O, I, and B may legally appear in the application prefix before the 1 separator: bech32_decode() accepts any printable single-case ASCII HRP and applies the restricted charset only after the separator. An operator following “a written O can only mean 0” could therefore corrupt a valid opaque-HRP backup during transcription. Clarify that these letters are excluded only from the encoded data portion, or explicitly exempt the application prefix.

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<h2>Offline recovery</h2>
<ol>
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