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Offline Cash (The Bitcoin Note)

Physical secure Bitcoin that you can easily share, spend, or hold.

Visit Offline Cash (The Bitcoin Note)

Offline Cash sells physical Bitcoin notes designed as self-custodial bearer instruments. Each note embeds an NFC chip holding two private keys (a plaintext user key and an encrypted manufacturer key) and a Bitcoin P2SH address requiring both keys before the claim-by date, or only the user key after it. An open source client app communicates with a note server to verify, re-key and claim notes. The first release is limited to 2100 packs.

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