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by tenuousemphasis
385 days ago
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This is a problem the cryptocurrency community has been dealing with for almost a decade: how to securely store a seed phrase backup (48 characters, the first 4 characters of 12 words). Letter stamps are one option. A number/letter grid you use a simple punch with are much more dense than this but still easy to do with hand tools. There are lots of products with pre-made stamped letter tiles that slide into slots. |
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