Ah ok, I see. So does that mean that a bitcoin is digitally indestructible? Like matter? If no one claims access to the key, then the btc will just be floating around in the nether for eternity?
Yes, as long the protocol is working the BTC from lost private-keys will be forever unaltered entries in a ledger. However I think the entropy law would kick in at some point and literally destroy all the BTC computed in the ledger.