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RE: Do you know what a Wrapped Token is and what it is for? by Karupanocitizen
ETH can be used directly on Ethereum blockchain within ERC20 smart contracts, but not on other blockchains (for example TRC20 token contracts can't handle ETH, BNB or receive TRX directly)... Used tokens don't need to be burned, they can be returned to "owner" address when unwrapping.
Thanks for the comments @mtl1979
With regard to ETH, as you mentioned well within its own network it can be used through the ERC-20, not so in other platforms, I think I did not know how to explain it well.
Now, according to what I understand, to create WBTC you must necessarily go through BitGo who issue WBTC with a 1: 1 ratio depending on the BTC received, when wanting to receive the BTC back, it is necessary to "burn" the previously issued WBTC, which is what I understand is known as "unwrap".
Greetings, have a happy day
Unwrapping doesn't by definition imply burning, or wrapping imply by definition minting... Some wrapped tokens do it, but not all... Some wrapped tokens are preminted and limited to maximum supply of the coin that it represents... If someone tries to wrap or unwrap more than circulating supply, it will fail (and revert).