Interview
summary
A hardware engraving service produces metal keychains, bracelets and rings with QR-code keychains that show only the public address for receiving funds and support any coin so a bartender or busker can accept tips without a phone. The shop also offers BIP39 seed engraving on the reverse and a tamper press option that the buyer alone uses so the vendor cannot extract keys, and a discount code is offered for immediate orders.
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