Without Merkle trees, blockchains would be too cumbersome, and Merkle proofs allow for cost-effective verification of data authenticity. Solidity Now!

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Without Merkle trees, blockchains would be too cumbersome, and Merkle proofs allow for cost-effective verification of data authenticity.

Merkle trees are actively used in blockchains (e.g., Bitcoin, Ethereum) to store transactions efficiently, but this is not the only application. For example, after the collapse of the FTX exchange, many exchanges implemented a Proof-of-Reserve mechanism, which utilizes a Merkle tree.