Review on Bitcoin Cold Storage Securely Cryptocurrencies by David Citizen

Love it The coin is exquisite but as they said it may not be that secure because it comes with a private key already so we can never be sure if anyone has a copy of the keys anywhere but I found a solution: I created a bitcoin wallet in Electrum, I exported an address and its private key and saved the seed. I then generated 4 QR codes each: an address, a private key, a seed phrase and a fourth QR code containing a URL with my address pointing to blockchain.com to verify the balance and transaction. I then placed these 4 QR codes in Photoshop and printed them onto a gold sheet of vinyl sticker using my laser printer. I check the measurements and enclose it in a circle to cut a round sticker out of it. I stick it on the coin, so I use my own wallet with my own keys that cover the manufacturer's built-in QR code.