Blockchain Glossary

Learn the key concepts of blockchain in a simple and visual way. Explore this video series designed to break down and explain the fundamentals of this revolutionary technology, taking you step-by-step into the world of blockchain.

I – J

K – L

X – Y – Z


Blockchain

What is Blockchain?

Blockchain is a decentralized database where information is stored in multiple copies, ensuring its authenticity through consensus. This eliminates the need for a central entity to validate data and enhances security.


Blockchain

What is Blockchain for?

Blockchain enables the recording of immutable and secure transactions. It is useful in sectors where information needs to be shared and trusted, such as supply chains or financial records, as it prevents manipulation and ensures transparency.


Consensus mechanism in Blockchain

What is the consensus mechanism in Blockchain?

It is the system that allows blockchain networks to reach agreements without a central authority. There are different types, such as Bitcoin’s proof of work or the proof of authority used in networks like Alastria.


Verifiable Credentials

What are verifiable credentials?

These are secure digital documents that allow automated and cryptographically protected information verification. Unlike traditional certificates, they can be validated without human intervention and preserve user privacy.


Cryptocurrency

What is a cryptocurrency?

A cryptocurrency is a blockchain-based digital asset that enables secure and decentralized value exchange. All transactions are recorded in an immutable ledger, ensuring transparency and preventing fraud.


Custodian

What is a custodian?

A custodian is a regulated entity responsible for storing and managing clients’ digital assets or wallets. It can safeguard private keys or directly hold cryptocurrencies like Bitcoin and Ethereum, ensuring their security.


DeFi

What is DeFi?

Decentralized Finance (DeFi) is an ecosystem of blockchain-based financial services that eliminate intermediaries. It enables peer-to-peer transactions through automated protocols, opening new opportunities in the financial sector.


Digital Assets

What is a digital asset?

A digital asset is any value represented on a blockchain, such as tokenized shares or utility tokens. Cryptocurrencies are a specific type of digital asset primarily designed for value exchange between users.


Gas (in blockchain)

What is gas in Blockchain?

It is the fee paid to the blockchain network to reward miners and validators. This cost ensures the security, stability, and immutable operation of the network, allowing transactions and smart contracts to be executed.


Not your keys, not your money

What does “Not your keys, not your money” mean?

It is a principle in the crypto ecosystem that warns about digital asset custody. It means that if you do not control your private keys, you do not have full control over your money, as you depend on third parties who can manage it without your permission.


ReFi

What is ReFi?

Regenerative Finance (ReFi) combines decentralized finance with sustainable investments. Thanks to blockchain, it enables tracking the impact of investments and aligns with ESG funds, which are becoming increasingly relevant in the global market.


Self-Sovereign Identity

What is Self-Sovereign Identity (SSI)?

SSI is a digital identity model that gives users control over their personal data. It allows them to decide what information to share, with whom, and for how long, ensuring privacy and transparency through blockchain.


Smart Contract

What is a Smart Contract?

A smart contract is a digital program that runs on blockchain automatically and irreversibly. Its code defines the agreement’s rules and ensures execution without intermediaries.


Tokenisation

What is Tokenization?

Tokenization is the process of converting a physical or financial asset into a digital representation on a blockchain. This facilitates its exchange and management with greater transparency and security.


Tokens & Blockchain

How are tokens related to Blockchain?

A token is a digital representation of an asset on a blockchain. It can be a physical or intangible asset, but its value depends on its backing and verification. Blockchain ensures its authenticity and prevents fraud.


Wallet

What is a wallet and what is it for?

A wallet is a digital tool used to store and manage documents, credentials, or digital assets. It simplifies transactions with administrations and companies, eliminating the need for physical documents.


Web 3

What is Web3?

Web3 is the next evolution of the internet, based on decentralization and blockchain. It allows users to manage their digital assets without relying on intermediaries, granting greater control, privacy, and autonomy.


ZK – Zero Knowledge

What is Zero Knowledge (ZK) technology?

ZK is a cryptographic system that allows verifying information without revealing the data itself. It is used in blockchain to ensure transaction privacy and protect sensitive information.