Addresses
Transactions do not truly comprise addresses.
A Bitcoin tackle is actually extra like an bill reference quantity created by the supposed recipient of the cash.
The tackle worth permits the senders pockets to assemble a transaction that comprises an output for that recipient. The output has a bitcoin script, a small program written in Bitcoin scripting language. This script is usually known as the locking script and it ensures solely the recipient can later spend that cash. The script is created from the quantity we name an tackle.
So different nodes do not ever see precise addresses and needn’t verify output addresses. They do not actually care about outputs though they do maintain an inventory of unspent outputs (UTXOs). It is just a while later (if ever) when that output is reference as an enter to a later transaction that nodes will verify the unlocking script produces the suitable values to fulfill the locking script.
Funds
The Bitcoin community does not maintain monitor of your complete funds or stability. Bitcoin nodes neither know or care about how a lot cash you’ve gotten. They solely care about whether or not the cash being spent are real. Similar to the proprietor of a espresso store does not have to know your financial institution stability they only verify the cash and banknotes you gave them appear and feel actual.
Bitcoin nodes verify that the transaction inputs will not be already spent. Every enter needs to be a reference to a UTXO from some prior transaction.