So I know with an HD wallet it allows you to receive bitcoin to different addresses while having them visible in the same wallet. What does this look like on the blockchain? Just several different wallets holding different amounts of BTC? Also, when you send bitcoin, what address does it send from? Does it send from multiple wallets? For example, if you received 0.5 BTC on two separate occasions and had the “multiple addresses” feature on, then decide to send your 1 BTC to another address, does it send from two separate addresses or an address completely not associated from the addresses you received to?