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@ 比特幣傢伙 bitcoinpoorguy
2025-02-22 01:13:03
Hey #nostr iches, here’s my 21st #bitcoin video on Youtube:
https://www.youtube.com/watch?v=ZVL-q_8HvOk
Summary:
Ping Pong, Blackjack and Slot machines
Let’s start with an interesting connection between Ping Pong, Blackjack, and Slot Machines. What do these games have in common?
Here’s the answer: 21
* Ping Pong matches go up to 21 points.
* Blackjack is also called "21" because that’s the highest score.
* Slot machines hit jackpots with three 7s (777), and 7 + 7 + 7 equals 21.
What does this have to do with Bitcoin? Well, nothing directly. But since this is my 21st post, I figured it's a good chance to dive into the significance of the number 21 in Bitcoin.
Most of you already know that 21 million is the total supply of Bitcoin that will ever exist. But how did we end up with this number? The truth is, it wasn’t chosen because of Ping Pong or casinos. Instead, it was an educated guess Satoshi made based on future needs. Whether Bitcoin becomes a niche asset or a global currency, the supply of 21 million and the flexibility (1BTC=100M Sats) ensures it can meet the demand.
The important part isn’t the number itself but the fact that it will never change. Once the supply was set, it was locked in forever. If someone tried to increase the supply, it would be like printing more money—diluting the value of everyone’s Bitcoin, just like how central banks devalue fiat currency.
But here's the thing: the supply can’t change, not just because no one wants it to, but because Bitcoin is decentralized. Changing the rules requires the consensus of the entire network. Let’s say someone wanted to increase the supply to 31 million coins. Even if a powerful institution like BlackRock wanted to create a version of Bitcoin with a higher supply, they could spin up 300,000 nodes to run a new software. However, the original 30,000 nodes running the current version of Bitcoin don’t have to follow it.
Bitcoin isn’t controlled by having more numbers of nodes; it’s based on consensus. The existing nodes would likely reject any attempt to change the supply, and they can’t be forced to run a new version. This is the power of Bitcoin’s decentralized nature—no single entity, not even the biggest corporation, can change the rules without the consent of the entire network. The immutability of the 21 million cap is one of Bitcoin’s core principles. It guarantees scarcity, ensures long-term value, and protects against inflation.