When it comes to Bitcoin, there is a lot of talk about the “zero-knowledge proof” feature. But what does this really mean? And does Bitcoin use zero-knowledge proof?
In order to understand what zero-knowledge proof is, we first need to understand what a digital signature is. A digital signature is a mathematical function that allows someone to sign a piece of data with their own private key.
This signature can then be verified by anyone who has the person’s public key.
The signature proves that the data came from the person who signed it, and it also proves that the data hasn’t been tampered with. The problem is that the signature also reveals the person’s private key, which can be used to impersonate them.
This is where zero-knowledge proof comes in. With zero-knowledge proof, the person who is signing the data doesn’t reveal their private key.
NOTE: Warning: Bitcoin does not use zero-knowledge proof. Zero-knowledge proof is a cryptographic technique that allows one party to prove to another that a statement is true without revealing any additional information. Bitcoin does not use this technology, so it cannot be used to prove that a transaction is valid without revealing additional information about the transaction.
Instead, they use a mathematical function to prove that they know the private key without actually revealing it.
The way this works is that the person creates two pieces of data. One piece of data is the digital signature, and the other piece of data is a “commitment”.
The commitment is a mathematical function of the private key, and it can be verified by anyone who has the public key.
However, the commitment cannot be used to calculate the private key. This means that even if someone manages to get their hands on the commitment, they still wouldn’t be able to impersonate the person who created it.
So does Bitcoin use zero-knowledge proof? The answer is yes! When you send a Bitcoin transaction, you’re actually creating a digital signature and a commitment. The commitment is then used to prove that you know the private key associated with your Bitcoin address, without revealing the key itself.
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