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Jerkmate
https://novasapien.com/
NovaSapien | Bitcoin Self-Custody, SeedSigner & Sovereignty
Feb 25, 2026 - NovaSapien helps you secure bitcoin with self-custody education, SeedSigner tools, SteelQR backups, and sovereign financial principles.
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https://seedsigner.com/
SeedSigner: Air-gapped DIY Bitcoin Signing Device
Apr 12, 2026 - BUILD YOUR OWN BITCOIN SIGNING DEVICE using a raspberry pi zero (VERSION 1.3) You can build an offline, air-gapped Bitcoin transaction signing device from...
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https://bitcoin.org/en/wallets/hardware/seedsigner/
Seedsigner - Hardware - Choose your wallet - Bitcoin
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