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0 sats \ 0 replies \ @Marcus_Cicero 6 Jun 2023 freebie \ on: How can I build a durable DIY seedqr code? bitcoin

You can etch stainless steel plates with salt water, two wires, and a battery.

https://www.youtube.com/watch?v=FU-l40LXtYw&t=0

https://m.youtube.com/watch?v=RVYHCVpeyEA&pp=ygUSZWxlY3RybyBldGNoIHN0ZWVs

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