This post asks the same question: What is an "unspent output"? but the answers for me are completely incomprehensible, probably because I lack a key piece of knowledge.
I have read every article I can find on "unspent outputs" and with each I get more confused. e.g. these:
Lets say I have 1 BTC in a coinbase wallet or similar.
Do I have any unspent outputs yet?
If yes, who created it?
If no, how does one create an unspent output (or in what circumstance/use case are they created?
Can a single address have more than one unspent output? If so in which circumstance?
Is there some article which explains these fundamentals in layman terms?
This one is on the general subject but doesnt mention unclaimed outputs:
It says this:
An output contains instructions for sending bitcoins. Value is the number of Satoshi (1 BTC = 100,000,000 Satoshi) that this output will be worth when claimed.
What is the relationship between claimed and unspent?
Is unspent unclaimed?
How does one claim unclaimed outputs, and in what circumstance would they end up unclaimed?