Coldbit Steel

Cold Storage

Coldbit Steel is a 4mm-thick stainless steel seed phrase backup plate rated to withstand 1,200°C, flooding, and electrical/magnetic shock. Supports 12-, 20-, and 24-word BIP39 and SLIP39 seeds, and comes with a stainless steel cover and binding posts. Note: as of early 2026, listed as sold out — verify availability before purchase.

Details

Nfc: No
Usb: No
Type: steel_backup
Price: $102
Status: Availability uncertain as of March 2026
Material: Stainless steel (4mm)
Interface: Physical seed backup (no digital interface)
Price Usd: ~$102
Air Gapped: Yes
Device Type: steel_backup
Open Source: No
Screen Type: none
Bitcoin Only: No
Connectivity: n/a (seed backup plate)
Manufacturer: Coldbit
Release Year: 2019
Secure Element: No
Fire Resistance: 1200°C

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