Hacker News new | ask | show | jobs
by g45y45 2664 days ago
Not accurate. You can trace the life of a particular 'coin' value -- which is generated in the coinbase reward in a block and spent later on in a UTXO (unclaimed transaction output). We like to pretend that bitcoin is fungible, but it strictly is not; You can trace the life of every 50, 25 and now 12.5 Bitcoin from birth to currently unspent. They all get mixed, so it can be difficult.

Also, what you are describing is the so called 'account' model -- used by Ethereum, EOS, etc. Bitcoin is a 'utxo' model, which allows specific inputs/outputs to be traced.