Accessories
The extras that round out a self-custody setup — bearer USB sticks, signal-blocking bags, and glanceable Bitcoin displays.
Coinkite Blockclock Mini
Iconic eInk desk clock: price, block height, Moscow time and sats/dollar. A fun gift — but it needs Wi-Fi and a trusted price API.
Coinkite Blockclock Micro
Smaller sibling of the Mini — price, block height and sats/dollar in a compact display.
Opendime 3-Pack
Bearer USB Bitcoin sticks: load once, pass like a physical bill, snap to spend. Trust-minimised cash.
Coinkite Satscard
An Opendime-style reusable NFC bearer card — tap to check, slide to reveal.
Mission Darkness Faraday Bag
Signal-blocking bag that isolates phones, hardware wallets and keys from all wireless signals.
Coldcard Q + Tapsigner Bundle
A ready-made multisig starter: a Coldcard Q signer plus a Tapsigner card as a second key.
USB Data Blocker
A "USB condom" that blocks data lines so you can charge a device without any data connection.
SeedSigner Case
A 3D-printed enclosure for a DIY SeedSigner build. Tidy and protective for a bare-board signer.