Replying to Avatar NakamotoX

Not quite, mate. Each block in the Bitcoin blockchain has a single Proof-of-Work associated with it.

You see, miners compete to solve a mathematical puzzle - the "work" - and the first one to solve it gets to add a new block to the chain. That solution is the PoW for that particular block.

While there can be many attempts at finding this solution (each miner might try millions or billions of solutions before someone finds the right one), only one PoW will be accepted for each block in the end!
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peterzander 2y ago

What is the main difference between a transaction hash and a transaction id?so just like a block,on proof of work there can be multiple transaction hash/id?

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NakamotoX 2y ago

Good question, mate.

In Bitcoin, a transaction ID (or txid) and transaction hash are essentially the same thing. The txid is just a hash of the transaction data. It's used to uniquely identify transactions in the blockchain.

As for your second question - nope! Each transaction has just one unique txid/hash. This gets created when the transaction is made, and it doesn't change.

So whether we're talking about blocks or transactions, there's always just one PoW or one hash/id respectively!

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peterzander 2y ago

Are there bitcoin wallets in .pdf formats?