Adjective denoting any process or transaction performed outside the blockchain, which therefore does not benefit from the immutability and decentralisation that are inherent in the blockchain.

Correlated words


A blockchain network used for testing new applications and features in a secure environment.

Mining difficulty

Difficulty level of the cryptographic problems to be solved to mine a Bitcoin block.

Layer 2

Protocol that operates on the basis of a blockchain to improve network scalability and efficiency.


The Unspent Transaction Output is the amount of cryptocurrency resulting from a transaction on certain blockchains, which can be the input for future transactions.

Account Model

On the Ethereum blockchain, accounts are the foundation of the decentralised ledger and they are usually associated with a wallet address.


Financial compensation paid to the creator of an NFT following its secondary purchase.

Multisig Wallet

A multisig wallet is a type of crypto wallet that requires two or more private keys to perform transactions.

Custodial Wallet 

A type of crypto wallet in which third parties hold the owner's private keys.

Seed phrase

Sequence of 12 or 24 words used to retrieve access to a wallet.

Non custodial wallet

A crypto wallet in which the owner retains custody of the private keys.

Fan Token

Fan Tokens are utility tokens that allow sports teams to connect with their fans.


Minting is the process of registration and creation of new digital assets on the blockchain, like tokens of NFTs.

NFT Domains

An NFT domain is a decentralised Internet domain managed by smart contracts and registered on the blockchain.


Digital platform in which users take part in shared experiences, immersed in an online virtual environment, sometimes based on blockchain

Delegated Proof-of-Stake

A variant of Proof-of-Stake in which the stake is transferred to delegates who act as validators. 

Pure Proof-of-Stake

It is a type of Proof-of-Stake in which validators are chosen randomly and anonymously thanks to the VRF function.

Liquid Proof-of-Stake

Proof-of-Stake variant in which tokens are not staked but liquid.


Total amount of cryptocurrency being staked

Staking Pool

The joint staking of several people's cryptocurrencies with the aim to increase the rewards

Cold Staking

Type of staking that requires the use of a cold wallet


A technology based on cryptography that enables decentralised and uncensored execution of any type of transaction.


A consensus mechanism based on putting cryptocurrencies at stake in order to contribute to the blockchain.

Genesis Block

This is the first block of a blockchain, sometimes referred to as block 0.

Block Height

The number of blocks in a blockchain starting from the genesis block.


The set of interconnected computers, called nodes, on which the blockchain of a given cryptocurrency is based.

Transactions per second (TPS)

Literally 'transactions per second', it is a measure of the speed of a blockchain.


Exchange of value, property or data between two parties.


Fragments' of blockchain operating in parallel.


A consensus mechanism for blockchain based on the computing power of mining.


Device connected to a blockchain and participating in its network.


Any process executed or recorded on the blockchain

Mining Pool

A company that bases its business on mining, by collecting a large number of powerful mining devices.


The process of creating new blocks for a blockchain in exchange for cryptocurrency rewards.

Consensus Mechanism

A decentralised way to validate transactions on blockchain.


A cryptographic function that serves to identify each block of the blockchain.


In the cryptocurrency sector, it indicates the way and rules by which projects and blockchains are governed.


Commission paid for the execution of transactions.

Double Spending

The possibility for an attacker to spend the same amount twice if the payment system does not have a mechanism to prevent this.


A Denial of Service is a computer attack that aims to make a network or service inaccessible.


Distributed Ledger Technologies are technologies based on an immutable ledger of transactions, the control of which is distributed.


It is said of a system governed by the consensus of its participants and without a central authority or hierarchy.

Cold Wallet

Wallets that are not connected to the internet.


In blockchain technology, it is a connection that allows interaction between different blockchains.

Financial Bubble

Increase in the value of an asset, in an excessive way, given its intrinsic value.

Blockchain Explorer

Software that allows users to view all transactions and data exchanged on a given blockchain.


The set of encrypted transactions that, connected to other blocks, makes up a blockchain.


Devices dedicated to mining certain cryptocurrencies.


The ability to exchange data with other platforms, including those based on different types of blockchain, as well as with the off-chain world.

51% Attack

When a node or group of nodes attempts to take control of the blockchain.

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