Nostr Web Client

"You could do it with pen and paper and complex math that nobody but 0.00001% of people understand."

Sure, but... If the hardware wallet generates keys, and does not connect to the internet how does the blockchain network know that:

A. I "own" (have the keys for) that wallet address?

B. Even know that address exists?

LightningSpore 1y ago

The blockchain knows UTXOs and locks (locking scripts). An address ~= a public key.

When you sign a transaction with your hww you give your wallet a PSBT which contains the UTXOs you want to spend, and the UTXOs you want to create.

Something which does have a view of the network is what creates the PSBT, so it knows what UTXOs are yours.

Both the hww and the thing that makes the PSBT knows your public key (xpub) and using that info can determine 1. What UTXOs are yours, and 2. That it can sign for the UTXOs

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