--- title: Merkle Tree url: "https://www.unknowngravity.com/en/glosario/arbol-de-merkle-merkle-tree" site: Unknown Gravity published: "2025-06-07T15:36:20+00:00" modified: "2026-07-30T15:43:02+00:00" language: en-US description: A Merkle Tree is a data structure in the form of hashed binary tree, widely used in distributed systems and blockchains To achieve efficient verification, data integrity and inclusion tests. section: "Home > Merkle Tree" --- # Merkle Tree GLOSSARY · BLOCKCHAIN & WEB3 Cryptographic data structure that allows large amounts of data to be verified in an efficient and secure way. WHAT IS IT? · FOR DUMMIES A **Merkle Tree** is like an information tree: the leaves hold the data and the branches combine that data into blocks. The great thing is that just by looking at the “root” of the tree, you can check if the data is correct without having to review one by one. This saves a lot of time and maintains security, especially in systems such as blockchain. WHAT IS IT? · PRO A **Merkle Tree** is a data structure in the form of **hashed binary tree**, widely used in **distributed systems and blockchains** To achieve **efficient verification, data integrity and inclusion tests**. In this structure, each **sheet** of the tree represents the hash of a block of data, and each **parent node** is calculated as the combined hash of its child nodes. This process continues until you reach a single final hash at the top, known as the **Merkle Root**. The main technical advantage of the Merkle Tree is that it allows us to check if a specific piece of data belongs to the set (for example, a transaction within a block) without having to verify all the elements, using a **Merkle proof**: a minimum sequence of hashes that, together with the original data, allows us to reconstruct the root and validate the inclusion. In blockchains such as **Bitcoin** and **Ethereum**, the Merkle root is stored inside the header of each block. This allows you to securely and quickly validate if a specific transaction is part of that block without having to download the entire history. It is an essential part in mechanisms such as **Simplified Payment Verification (SPV)**, **lightweight validation**, **Rollups**, **airdrop verifications using Merkle trees** or off-chain data integrity tests. In addition, its efficient structure in terms of space and computing is ideal for applications that require verifying large volumes of data with minimal tests, being key to the scalability and decentralization of blockchain systems. ## 01 / Key points - It is a hashed structure that groups data in a hierarchical way. - Each parent node is the combined hash of its children - Allows you to verify the integrity of data without having to review all of them - The Merkle root is used to validate block transactions - It is the technical basis for blockchains, rollups, SPV, airdrops and more ## 02 / Advantages - **Fast and efficient verification** of data integrity and belonging - **Technical scalability**: allows you to manage millions of data without overloading the network - **Saving space and resources** since it does not require full storage - **High cryptographic security** based on hash functions - **Ideal for lightweight, decentralized testing**, as SPV customers ## 03 / Disadvantages - **Technical complexity** for novice developers - **Doesn't support efficient dynamic updates** without recalculating the structure - **Security depends on the strength of the hash function** used - **Requires test management (Merkle Proofs)** that must be kept accessible - **On very large trees**, the cost of generating tests may increase if it is not optimized RELATED CONCEPTS [Hash](/en/glosario/hash) [Node](/en/glosario/nodo) [Blockchain](/en/glosario/blockchain) [Token](/en/glosario/token) [Smart contract](/en/glosario/smart-contract) [Smart Contract](/en/glosario/smart-contract-contrato-inteligente) KEEP LEARNING [How to protect your digital assets in the cryptocurrency world](/en/articulos/como-proteger-tus-activos-digitales-criptomonedas) [Tokenization without legal problems in Spain and Europe: What you need to know before you start](/en/articulos/tokenizacion-sin-problemas-legales-lo-que-debes-saber-antes-de-empezar) [Comparison of smart contracts programming languages](/en/articulos/lenguajes-programacion-smart-contracts) [How to raise investment for your blockchain project: Real and effective strategies](/en/articulos/como-levantar-inversion-para-tu-proyecto-blockchain-sin-vender-humo) [Blockchain use cases in the supply chain.](/en/articulos/casos-de-uso-de-blockchain-en-la-cadena-de-suministro) RELATED SERVICES [Blockchain protocol development](/en/servicios/desarrollo-de-protocolos-blockchain) [Smart contract auditing](/en/servicios/blockchain-security-audits) [Asset tokenization](/en/servicios/tokenizacion-activos) [Web3 Development](/en/servicios/desarrollo-web3) [Product traceability](/en/servicios/sistema-trazabilidad-de-productos) [Full glossary](/en/glosario) This entry is informative. It is not legal, tax or investment advice. The rules cited change: check the current version on [BOE](https://www.boe.es) and [EUR-Lex](https://eur-lex.europa.eu).