When we talk about the end of Bitcoin stock, we mean reaching the maximum allowed number of bitcoins, which is 21 million. Bitcoin is designed so that there is a limited quantity of it, and bitcoins are mined through solving complex mathematical equations by computers.

What happens when inventory runs out?
1. Mining rewards: Currently, miners (individuals or companies that operate mining operations) receive two rewards:
- Block reward: A number of new Bitcoin coins that are issued with each new block.
- Transaction fees: Small fees paid by users to complete their transactions.

When all Bitcoin (21 million) is mined, miners will stop receiving block rewards because there are no new bitcoins to be issued. However, they will continue to receive transaction fees only.

2. Transactions: After the Bitcoin supply is exhausted, the network will continue to operate, but all transactions will be based solely on the fees paid by users when sending Bitcoin, and this will be the main incentive for miners to continue securing the network and verifying transactions.

3. Price Impact: Due to limited supply (only 21 million), it is expected that the price of Bitcoin will increase in the long term with increasing demand, especially after people realize that no more can be produced.

4. The importance of mining: Even after the stock is exhausted, mining will remain important for maintaining network security and confirming transactions, but rewards will come from fees only.