I just watched Jason's post on X about how crypto wallets work, and it was pretty interesting. What I want to add is that the role of network nodes in this process is actually much more important than many people think.

It can be simply imagined like this: your public key is like a published phone number, anyone can see it and send you money. But the private key is different; it's your ID code, known only to you, used to sign and confirm all transactions you want to make.

But the interesting part is the role of network microorganisms—or more precisely, the verification nodes—they act like controllers. When you send a transaction, these nodes check whether your signature is valid, ensuring that only the owner of the private key can initiate it. After verification, the node records the transaction onto the blockchain.

The cool thing is that the role of microorganisms in this system—the verification nodes—is not only to check but also to receive rewards, called Gas, from the wallet when a transaction is successfully packaged. This is an incentive mechanism to keep the nodes operating and to protect the network. Understanding this mechanism helps you better grasp how crypto transactions work.