PSBT miner-submission advice for multisig sweeps
darosior-psbt-miner-tool-advice
- Author
- @darosior
- Organisation
- independent
- Evidence role
- migration-guidance
- Posted
- 3 Aug 2026, 20:07 UTC
- Capture status
- capture held
Antoine Poinsot explains that publishing a multisig PSBT through a private miner submission can keep descriptor information off the public mempool until confirmation, which may help when affected COLDCARD keys meet the spending threshold but the attacker still lacks the wallet setup needed to reconstruct scripts. Held as a dated technical mitigation recommendation. The security assessment is the poster's own and is not independently verified here.
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