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Reddit user builds 3D-printed BIP39 word lottery for offline seed generation

A Reddit user describes distrusting third-party randomness for private keys after a "coldcard situation" and instead 3D printing every BIP39 word to draw from like a lottery, with the last word calculated on a fully offline device. The user published the project repository for others to print their own.

Why “Rumor”

  • Only community or trader posts: r/Bitcoin

0 independent source groups across 1 post · evidence score 9/100. How labels work

Market around the story

  • BTC Still being measured. The price reaction is recorded six hours after the first report, around .

What the sources claim

  1. The user decided not to trust any company or third party to generate randomness for their private key after a "coldcard situation". BTC

    “after the coldcard situation, I decided I really don't want to trust any company or third party to come up with "randomness" for my key”
    r/Bitcoin
  2. The user 3D printed every BIP39 word to draw from like a lottery, tossing each drawn word and writing down the word facing up. BTC

    “So I 3d printed every single BIP39 word to draw from, similar to a lottery. I draw one, toss it and write down the word facing up.”
    r/Bitcoin
  3. The last word of the seed phrase is calculated with a fully offline device. BTC

    “The last word is calculated with a fully offline device.”
    r/Bitcoin
  4. The user made the project repository public so anyone can print their own, stating it should work on any 3D printer. BTC

    “I made the repo public in case anyone wants to print their own (should work on any 3d printer)”
    r/Bitcoin

Sources

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Summary and claims extracted by deepseek/deepseek-flash with prompt analyze-story@3 on 2026-10-08 14:50 UTC. Labels are computed from the sources, not by the model.