Comment by briansm
2 hours ago
The hash is merely a convenience, the _actual_ public key used in transactions is present in the ledger and available to anybody who wants it.
2 hours ago
The hash is merely a convenience, the _actual_ public key used in transactions is present in the ledger and available to anybody who wants it.
How does that work?
Suppose I make a paper wallet on an offline PC, write down the address and discard both keys. If I now send some BTC to this address, how does the client figure out the public key?