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How can they list the unspent transactions and the current amount of an address which "is not in their wallet"?
Block explorer sites maintain a separate database of information which is built by continuously scanning the Bitcoin blockchain. If block explorer sites see a standard locking script in the outputs of the transactions, they scrape the addresses ...
3
The "xpub" format was defined by BIP32. It's a standard that specifies how to derive public keys from master public keys and seeds. Parts of it are widely adopted, some parts aren't. However, it does not say anything about how the keys it generate should be turned into addresses, only the keys themselves.
Now, at the time, there was only really one obvious ...
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If you are using more than one wallet, the wallet is selected by sending the RPC requests to <host:port>/wallet/<wallet_name>.
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Currently the keypool is not an address pool. You cannot put addresses in the keypool. You need to be importing public keys in order for anything to be added to the keypool.
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Different networks are completely independent, and while it is technically possible to put together a single node software that is able to connect and process all of them, it makes little sense for someone to invest that amount of time and money in it when you can simply run each network independently (even on the same machine).
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Bitcoin does not actually use addresses internally. Addresses are just a way for us humans to specify what scriptPubKey we want the wallet software to create. When a transaction output is spent, the address is not included anywhere because it is not needed.
Bitcoin Core's decoding RPCs will include more information than is actually present in the ...
1
getwalletinfo does not take parameters.
It sounds like what you are looking for is how to send getwalletinfo to a certain wallet loaded into Bitcoin Core. The way to do this is to use that wallet's API endpoint. The endpoint is /wallet/<name> where <name> is the name of the wallet you are trying to send commands to.
So the full URL that you ...
1
No, that won't work. joinpsbts must be used before any signatures are created. Otherwise existing signatures will not be valid for the joined transaction. Rather, each person must create their own PSBT, send them to each other or to some coordinator where the PSBTs are then joined together with joinpsbts. Then the joined PSBT can be distributed back to ...
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ypub and zpub are not things that are specified in BIPs. They are things that people have decided to use and specify outside of the BIPs process.
Furthermore, they are a layer violation. They specify what kind of addresses a public key should be used to create, but key generation and the address type to create from a key are entirely separate things that ...
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