BitcoinMadeClear

Can someone copy my bitcoin?

Copying a picture or a copy of the blockchain does not create extra spendable bitcoin. Copying a private key is different: it can give someone access to spending the existing amount.

Updated

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What does that mean for you?

Digital information can be copied easily, so Bitcoin needs shared rules about spending. A payment cannot validly spend an amount that has already been spent in the accepted history.

A node can keep a copy of that history without owning every amount in it. Control comes from the required spending approvals, not possession of the record file.

Can someone copy my bitcoin?Copied record: Does not create extra bitcoin. Copied picture: Does not grant spending access. Copied secret: Can expose existing bitcoin.Copied recordDoes not create extra bitcoinCopied pictureDoes not grant spending accessCopied secretCan expose existing bitcoin
Copied record: Does not create extra bitcoin. Copied picture: Does not grant spending access. Copied secret: Can expose existing bitcoin.

Can you picture an example?

Imagine someone saves a screenshot showing your balance. That image does not give them your keys. If they copy your recovery words instead, the risk changes because those words can restore spending access.

What should you remember?

A screenshot is neither proof of ownership nor a way to create more bitcoin. Protect the information that grants access, and distinguish a payment still waiting from one recorded in the confirmed history.

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