SteelQR – C24

The SteelQR – C24 is a military-grade stainless steel backup engineered to secure your 24-word Bitcoin seed phrase in the form of a compact QR code. Built from 316L stainless steel and measuring 3mm thick, this plate is corrosion-resistant, fireproof, and tamper-proof, ensuring your Bitcoin backup lasts for generations.

Designed with SeedSigner compatibility, the SteelQR – C24 allows you to encode your seed phrase and permanently mark it with either a manual or automatic center punch (sold separately). Once etched, the QR code becomes an air-gapped, offline cold storage solution — completely resistant to online threats, physical damage, and environmental risks.

Key Features:

• Precision-engineered from 316L military-grade stainless steel
• 3mm thick for maximum durability and fire resistance
• Stores your 24-word Bitcoin mnemonic seed phrase in a compact QR code
• Fully tamper-resistant, waterproof, and corrosion-proof
• Open-source hardware, released under GPLv3 by Vulcan21
• Seamless compatibility with SeedSigner devices
• Portable and discreet — perfect for long-term cold storage

Unlike paper backups or standard hardware wallets, the SteelQR – C24 offers sovereign-grade self-custody by keeping your seed phrase offline and indestructible. The QR code format ensures quick and accurate restoration with SeedSigner while preventing unauthorized readability on non-compatible devices.

Whether you are a Bitcoin holder, sovereign individual, or self-custody advocate, the SteelQR – C24 is your ultimate bulletproof backup for securing Bitcoin wealth against loss, theft, fire, or corrosion.