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Largely, this question boils down to one thing: does the wallet software let you control the private keys for your coins? Or not? If the wallet does not let you control your own keys (ie a custodial wallet), then it is up to the custodian to craft and publish your transactions. Obviously, this gives the custodian ability to censor your transactions at will. ...


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I don't know if I'd call it a hardware wallet but yes you can store keys on a USB stick that also contains software that allows you to build and sign transactions. Technically all you need is the input details (txid, nout, scriptpubkey, and private key (and full input value if segwit)) to build a transaction. This would be for advanced users as building raw ...


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I want to roll my own hardware wallet using a USB stick. An ordinary USB stick cannot be made into a hardware wallet. Hardware wallet incorporates cryptographic hardware designed for cryptocurrencies and has firmware to interact with software on another device (PC, phone, etc) No and Yes. Normal wallet software has some utility while it is ...


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Quantum computing isn't simply faster. It is entirely different. Some computations are massively faster on a quantum computer, and other are not faster at all. What has been demonstrated is meaningless: the "program" that was executed was in fact a randomly generated one, designed to be specifically hard on traditional computers, but easy on that specific ...


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