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What Is Simplified Payment Verification (SPV) and Its Role in Lightweight Wallets?

SPV allows lightweight wallets to verify transactions by checking a Merkle Proof against the Merkle Root in the block header.
Greeks.Live29.10.25

What Is Simplified Payment Verification (SPV) and Its Role in Lightweight Wallets?

Simplified Payment Verification (SPV) is a method that allows lightweight wallets to verify the inclusion and validity of transactions without downloading the entire blockchain. SPV clients only download the block headers, which contain the Merkle Root.

They then request a Merkle Proof for a specific transaction. By using the proof to recompute the Merkle Root and matching it against the header's root, the wallet confirms the transaction's validity and inclusion.

This significantly reduces the storage and bandwidth requirements for users.

What Is the Primary Function of the Merkle Root in a Blockchain?
What Is the Difference between the Merkle Root and the Block Hash?
How Does a Merkle Tree Enable “Simplified Payment Verification” (SPV)?
How Does a ‘Light Client’ Utilize the Merkle Root for Verification?

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