• ✅ C — Create (Self-Custody Secure Foundation)
• 💰 R — Receive (Get Bitcoin Non-Zero-Sum)
• 🧠 M — Manage (Use and Maintain Securely)
• 🔚 E — Exit (Spend, Securely Migrate, or Pass On)
• 📘 Additional Tips

§✅ C — Create (Self-Custody Secure Foundation)

1. Unbox and Initialize

   • Use an air-gapped setup: power the Mk4 with a USB power bank or an Opendime’s USB power passthrough.
   • Slide the protective cover and turn it on.
   • Create a new wallet → Choose 12 or 24-word seed (store on steel, never digitally).
   • Set main PIN + anti-phishing words and trick PINs (duress, decoy, kill-switch).

2. Enable Backup

   • Use the MicroSD card to backup encrypted seeds, wallet info (.bak), and BIP39 wordlist.
   • Save a backup to multiple secure offline storage locations.

3. Turn Off NFC (optional for long-term cold storage)

   • Default is off. If not using it for mobile PSBT exchange, keep it disabled or cut the NFC trace.

§💰 R — Receive (Get Bitcoin Non-Zero-Sum)

1. Get Your xpub / Addresses

   • Export xpub to Sparrow, Electrum, or your BTCPayServer (via MicroSD or USB disk mode).
   • Generate receiving addresses.

2. Fund Your Bank Account Use these non-zero-sum strategies to earn bitcoin (no exploitative actions):

   • Bitcoin education: teach locals about Bitcoin, charge sats for classes.
   • Run a Nostr relay and accept Lightning zaps for boosting signal.
   • Sell physical tools or books for Bitcoin — think self-reliance gear.
   • Provide digital services (editing, websites, art) via P2P markets (e.g. Civkit, Nostr marketplaces).
   • Earn Lightning tips by creating content with lnurl or Lightning Address.

3. Load Coldcard

   • Once Bitcoin is in a hot wallet or exchange → send to your Coldcard wallet address.
   • Confirm transaction visually on Coldcard screen before finalizing from a watch-only wallet.

§🧠 M — Manage (Use and Maintain Securely)

1. Use with Watch-Only Wallets

   • Sparrow Wallet (desktop), or Electrum with USB or MicroSD.
   • Load xpub to generate addresses, track balances, create unsigned PSBTs.

2. Sign Transactions

   • Create PSBTs in Sparrow → save to MicroSD → insert into Coldcard → sign.
   • Alternatively, use USB Virtual Disk Mode for signed PSBT transfers.

3. Duress Protocols

   • Use Trick PINs: One shows empty wallet, one wipes seed, another disables device.
   • Set Kill Key: if coerced, press special key to wipe.
   • Enable Login Countdown Wipe if needed.

4. Security Maintenance

   • Regularly verify firmware signatures from Coinkite.
   • Physically inspect device for tampering if traveling or storing long-term.

§🔚 E — Exit (Spend, Securely Migrate, or Pass On)

1. Spend from Coldcard

   • Only when necessary — otherwise, use interest-generating services or Lightning for day-to-day.
   • Sign PSBTs and broadcast via Sparrow or Electrum.

2. Secure Migration

   • Export backup and xpub before replacing device or upgrading.
   • Use Seed XOR feature for shared custody (e.g. inheritance plans).

3. Succession Planning

   • Split 24-word seed using Shamir backup, or store with 2-of-3 multi-sig.
   • Write detailed instructions for your heirs using a trusted encrypted medium.

§📘 Additional Tips

• Use Liquid Bitcoin for large sums if high privacy or fast settlement is needed.
• Integrate with Bitcoin hardware like Trezor or offline Lightning nodes (e.g. Start9 or RaspiBlitz) for advanced setups.
• Always test small transactions before committing to large ones.

• Mt. Pelerin — Swiss-based non-custodial crypto services, fiat on/off ramp, and compliance tools.
• Coldcard Mk4 — Bitcoin-only hardware wallet with advanced security features like dual secure elements, trick PINs, and NFC support.