Cold Wallet Multisig Mastery is a blockchain product available on the Whop marketplace, created by oswaldofetscher and launched in June 2026.

Stop trusting exchanges and custodians with your crypto. This is the complete hands-on coaching program for setting up a production-grade cold wallet multisig system with a backup seed protocol that survives fire, flood, and death. **What's inside:** - Full multisig setup walkthrough (2-of-3 and 3-of-5 configs) - Hardware wallet selection + firmware verification - Steel seed plate backup protocol - Shamir's Secret Sharing implementation - Automation stack: signing scripts, air-gap verification, watch-only wallet setup - PSBT workflow + offline signing - Emergency recovery drills - Weekly live coaching sessions **Who this is for:** Crypto holders with $10K+ in self-custody assets who want the same security architecture used by family offices and institutional custodians. **Tools covered:** Specter Desktop, Sparrow Wallet, Trezor, Coldcard, Bitbox02, SeedSigner, Caravan.

Cold Wallet Multisig Mastery has is priced at $158/week.

Cold Wallet Multisig Mastery offers a 30% affiliate commission for promoters. Track Cold Wallet Multisig Mastery's estimated revenue, member growth trends, and competitive market position on Whop Trends.