It's one of the cup holders in my truck. I put my spare change in it. 🤙🏼

https://en.bitcoin.it/wiki/Coinbase

Each block contains a coinbase transaction, which is the first transaction in the block. The coinbase transaction is created by the miner who successfully solves the cryptographic puzzle to mine a new block. This transaction creates the new coins and includes the block reward.

But you know this already 😉

The first transaction in every block 📦