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Informational 21 Bitcoin

pay the silent payment address of a resolved instruction where the sending wallet can, treating the address in the body as a fallback

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What the developer wrote

Authored by Craig Raw

50/100 · Thin
pay the silent payment address of a resolved instruction where the sending wallet can, treating the address in the body as a fallback
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
The short version

What changed, and why it matters

This commit changes how Sparrow Wallet chooses between a regular Bitcoin address and a newer 'silent payment' address when paying someone via a DNS name or a Bitcoin URI. Previously, the wallet preferred the regular address. Now, if the sending wallet supports silent payments, it prefers the silent payment address and only falls back to the regular address when silent payments aren't possible. This is a feature/correctness improvement rather than a fix for an active security flaw, but it reduces the chance of silently using a weaker address type when a stronger one is available.

Recommended action

Review the companion drongo submodule changes to confirm silent payment address parsing and `canSendSilentPayments()` behave correctly. Test that wallets unable to send silent payments still fall back cleanly to the regular address, and that the DNS payment cache key matches the final output address to avoid proof verification failures.

Security signals we found

01

Preferring silent payment addresses over plain addresses when both are advertised

02

Making address resolution wallet-capability-aware

03

Avoiding mismatch between cached DNS payment key and the address used in the constructed payment

04

Submodule bump to drongo c0333df6 (silent payment / URI parsing support)

Risk score

Why this scored 21/100

Our methodology →
Potential impact 3/30
Exploitability 2/25
Stealth signal 2/15
Affected reach 4/15
Confidence 7/10
Evidence quality 3/5
Human-validated context

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