Welcome to the discussion about this lecture. Here you can ask questions or post feedback about this specific lecture.
I think you made a small mistake in this lecture at 4:30min when you’re going through the utxo’s, you list them in the wrong order. The bottom utxo with 101 confirmations was the third and last reward we got, because the reward came from the block number 3, it has 100 blocks in front of it. The top utxo with 103 confirmations was the reward from the first mined block and has 102 blocks in front of it.
Let me know if I am wrong, this is a bit of a brain twist to think about