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Merkle Proof Meaning

A small chunk of data that proves a specific transaction (a Merkle Leaf) is indeed included in a specific block (the Merkle Root). It is a way to say: I don't have the whole book, but I have a proof that this specific word is on page 42.

Merkle Proofs are what make light wallets possible. Your phone doesn't have the space to store the massive Bitcoin blockchain.

Instead, it just downloads the block headers.

When someone sends you money, the network provides a Merkle Proof that shows your transaction is validly linked to that root.

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