What are DApps in web3?

Decentralized Applications (DApps) exist in the web3 ecosystem, they run on a decentralized network of nodes, which allows them to be independent of centralized servers.

Their operation is based on blockchain and must meet criteria for consideration. They must be open source, be based on blockchain, use cryptographically encrypted tokens and allow token creation. Dapps must be based on open source, visible by third parties, which ensures that they are not dependent on centralized companies, a fundamental principle of their operation. In addition, they must secure user information through the security provided by the Blockchain, where the use of hashing allows data protection.

• They do not depend on an entity to be managed

• They can be modified and used by other developers

• User data is not stored or shared with a company.

• Decentralized backend by blockchain network

• Transactions are documented by smart contracts.

Mastodon: is a decentralized microblogging social network. Unlike traditional social networks, Mastodon does not have a centralized server, instead, it works through multiple independent servers (instances) that communicate with each other. Users can choose the instance they prefer or even create their own, offering greater control over their social network experience and increased privacy.

Axie Infinity: is a cryptocurrency game based on the Ethereum Blockchain that allows users to breed, trade and fight digital creatures called "Axies". The game uses smart contracts to manage the ownership and transactions of Axies, giving players greater security and transparency in their in-game interactions.

Huddle01: is a web3 powered video conferencing platform with a focus on privacy. It allows users to organize virtual meetings, share files, assign tasks and collaborate on projects efficiently.

Decentralized applications represent a challenge for those who are familiar with the web2 and do not yet understand this new paradigm. Disclosure of information about DApps is crucial, as they offer unprecedented levels of security and have the potential to transform the way we collaborate online. Developers are invited to explore and experiment with these innovative technologies, which will not only open up new opportunities, but also bridge the digital divide and foster inclusion in the digital world.

Digital Guide (n.d.). Desarrollo de DApps: qué son las aplicaciones descentralizadas. Retrieved from https://www.ionos.es/digitalguide/paginas-web/desarrollo-web/dapp/

Binance Academy. (n.d.). What Are Decentralized Applications (DApps). Retrieved from https://academy.binance.com/es/articles/what-are-decentralized-applications-dapps

The security structure of blockchain is based on several elements:

• Blocks: contain information about transactions.

• Transactions: These are the events recorded in the blockchain.

• Hash: Converts any data into a unique and unrepeatable string.

• Digital signatures: Provide authentication and verification of data integrity.

• Miners: Verify and validate transactions, adding new blocks to the blockchain.

Common threats on the Internet include identity spoofing, fraud, scams and data centralization. For this Blockchain offers the following solutions:

• Asymmetric cryptography: uses public and private keys to encrypt and decrypt data asymmetrically, providing an additional level of security.

• Blocks: The linked block structure guarantees data integrity and prevents fraud.

• Consensus Mechanisms: Agreements between various members of the chain that validate and approve transactions, such as Proof of Work (POW) and Proof of Stake (POS), which secure the network and guarantee the validity of transactions.

An example of how blockchain has protected software is the case of the Ethereum smart contract platform. Ethereum uses blockchain to execute smart contracts in a secure and decentralized manner. A notable case was the DAO attack in 2016, where a smart contract was exploited, causing a rift in the community. However, Ethereum implemented a hard fork to reverse malicious transactions and protect users' funds.

CriptoNoticias. (2023). Periodista habría encontrado al hacker que robó USD 10 mil millones en Ethereum en 2016. Recuperado de https://www.criptonoticias.com/comunidad/periodista-haber-encontrado-hacker-robo-usd-10mil-millones-ethereum-2016/#google_vignette.

In conclusion, Blockchain offers a great advantage in data protection and provides trust in the ever-evolving Internet. Its response to threats such as identity spoofing, fraud and data centralization demonstrates its ability to provide a secure and trusted environment for online transactions.