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Low 34 Bitcoin

add initial sending to silent payments support

Public commit record

What the developer wrote

Authored by Craig Raw

45/100 · Thin
add initial sending to silent payments support
✓ Descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
The short version

What changed, and why it matters

This commit adds the first version of 'silent payments' sending support to the Sparrow Wallet desktop app. Silent payments are a newer Bitcoin privacy technique where the recipient's address is not directly visible on the blockchain. The change touches many UI and transaction-building files to recognize silent payment addresses, build transactions for them, display them correctly, and disable RBF (Replace-By-Fee) for those transactions. It also converts PSBTs to version 0 before export and makes small cleanups. There is no direct evidence in the commit or supplied references that this fixes a known security vulnerability; it reads as a feature addition with some defensive checks.

Recommended action

Treat this as a feature commit rather than an urgent security patch. Reviewers should inspect the drongo submodule update for the SilentPaymentAddress and SilentPayment classes, verify that dummy addresses cannot be confused with real outputs, confirm that RBF disable logic is enforced end-to-end, and test that PSBT v0 conversion does not strip fields needed by hardware signers. Users should upgrade only after normal release testing; no immediate action is indicated by the commit alone.

Security signals we found

01

New cryptographic address scheme (silent payments) integrated into transaction construction and signing flow

02

RBF explicitly disabled for silent payment sends to prevent cross-device address recomputation failures

03

PSBT version downgrade to v0 on import/export to improve compatibility

04

DNS payment cache now distinguishes legacy addresses from silent payment addresses

05

Signing flow recomputes silent payment output scripts and refreshes UI via event

06

Validation gate prevents sending silent payments from unsupported wallet types

Risk score

Why this scored 34/100

Our methodology →
Potential impact 5/30
Exploitability 5/25
Stealth signal 5/15
Affected reach 10/15
Confidence 6/10
Evidence quality 3/5
Human-validated context

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