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SeedHammer
@SeedHammer
Second generation engraving machine for bitcoin backups. Nostr: npub1z072s0nvldeva7a6qek3kj358f0h5gm640kkllkk52h0qrjtnw8q38wfm4
SeedHammer.com
Joined July 2022
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  • user avatar
    SeedHammer
    @SeedHammer
    Nov 11, 2022
    The SeedHammer machine alongside an air gapped device running the SeedHammer app. The app enables the user to build single and multisig setups from dice rolls. The machine hammers all data (both private and public info) into stainless marine grade steel.
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    SeedHammer
    @SeedHammer
    Dec 1, 2022
    The SeedHammer machine creating a self-contained #Bitcoin multisig setup on stainless steel plates (316 marine grade). Open Source, Trustless, Verifiable, Air Gapped and with your own entropy (dice rolls).
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    SeedHammer
    @SeedHammer
    Nov 16, 2022
    DM is now open for pre-orders😀 #Bitcoin only! The SeedHammer incl all accessories(cables, burner phone etc): $449+shipping. SH01 Stainless Steel Plates (316 Marine Grade) 85mm x 55mm @ 2mm: $15/3pcs. Perfect for Single Sig and 2/3 Multisig. US Shipping: $85 EU Shipping: $135
    The SeedHammer machine with accessories.
    The SeedHammer SH01 Stainless Steel Marine Grade 316. 85mm x 55mm @ 2mm.
    The SeedHammer SH02 Stainless Steel Marine Grade 316. 85mm x 85mm @ 2mm.
  • user avatar
    SeedHammer
    @SeedHammer
    Feb 24, 2023
    The SeedHammer machine hammering a plate. Solely controlled by an air gapped @seedsigner running SeedHammer software (will be public domain). Getting closer. Please be patient 🙏🔨
    19K
  • user avatar
    SeedHammer
    @SeedHammer
    Dec 8, 2022
    Example of 3-out-of-5 #Bitcoin multisig setup. Seeds created with diceware🎲, imported to an air-gapped device that runs the open source SeedHammer app, hammered onto steel with an air-gapped SeedHammer machine🔨 Trustless, verifiable and self-contained steel backup🔥
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    SeedHammer
    @SeedHammer
    Dec 21, 2024
    Announcing SeedHammer II Compact, light and operated by builtin touchscreen, this is the machine we wanted when starting SeedHammer. Preorder here: - geyser.fund/project/seedha… (lightning) - seedhammer.com/shop (on-chain) Or read on for the highlights.
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    20K
  • user avatar
    SeedHammer
    @SeedHammer
    Jul 11, 2023
    The pitfall of multisig is finally solved. Backup multisig wallet inclusive the descriptor in 3 easy steps. Air-gapped, verifiable and open source. Withstand a loss of all shares beyond the quorum. See a longer edit here: youtu.be/7V-R7SZqkhQ
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    42K
  • user avatar
    SeedHammer
    @SeedHammer
    Dec 4, 2022
    A credit card sized #Bitcoin wallet on stainless steel. Private side with backup words, master fingerprint and SeedQR for easy spending with a stateless signer (@SeedSigner, @Blockstream Jade etc). Public side with xpub, derivation path and QR for import to your favorite wallet
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    SeedHammer
    @SeedHammer
    Nov 23, 2022
    A #blockstreamjade with firmware v0.1.41 can function as a stateless signing device. It can even scan SeedQR codes off steel!
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    SeedHammer
    @SeedHammer
    Mar 24, 2023
    The SeedHammer controller software is now open for the public! github.com/seedhammer 🚀🚀🚀 We will let pre-order customers into the payment flow starting next week.
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    17K
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    SeedHammer
    @SeedHammer
    Feb 7, 2023
    We are getting close to shipping the first pre-orders. Pre-orders in DM closing in one week - Feb 14th. Ordinary price will be USD 999.
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    26K
  • user avatar
    SeedHammer
    @SeedHammer
    Jun 19, 2025
    Join us at our booth at @BTCPrague where we show off the SeedHammer II and how easy it is to engrave a seed through a NFC device such as a @COLDCARDwallet Q or Mk4. All orders will receive a 5% discount in the @Coinkite store.
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    19K
  • user avatar
    SeedHammer
    @SeedHammer
    Aug 7, 2022
    The SeedHammer machine printing a #bitcoin seed phrase and its seed QR representation (private side of the plate) 🔨
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    SeedHammer
    @SeedHammer
    Apr 7, 2023
    Shipping pre-orders 😍📦 Soon a lot of people will be able to produce self-contained #bitcoin multisig steel backups and nice credit card sized singlesig backups. With QR for easy recovery or load into stateless signers. Thanks for all of your patience🙏
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    20K