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One signer cannot prove that every other multisig device will enforce the same policy. Verify receive addresses on multiple signers and in the coordinator before funding the wallet.
COLDCARD can import a multisig configuration from MicroSD, Virtual Disk, NFC, or QR on Q. It stores the quorum, derivation data, and cosigner keys needed to verify and sign that wallet's PSBTs.
Q can scan an address or BIP-21 payment URI by QR; Q and Mk4/Mk5 can receive one by NFC. COLDCARD then checks whether that address belongs to the active single-sig or enrolled multisig wallet.
We are investigating how a post containing a phishing link was published from this account. It has since been deleted.
Do not visit or interact with that link. COLDCARD’s only official website is coldcard.com.
This account has used offline 2FA with tightly restricted access since 2017. We have contacted @X and are reviewing all account access.
We will share further verified updates here.