Educational portal · Cryptocurrency, blockchain and digital security
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Learn crypto by concept

Introductory guides organized for people who want to understand blockchain and cryptocurrency from the basics.

BLOCKCHAIN

What is blockchain?

A clear introduction to the distributed-ledger technology behind many cryptocurrencies

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BITCOIN

What is Bitcoin?

Basic concepts for understanding the first widely adopted decentralized monetary network

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ETHEREUM

What is Ethereum?

An introductory explanation of Ethereum, Ether and smart contracts

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CONCEPTS

Coin vs. token: what is the difference?

Learn why a network-native coin and a token issued on top of a network are not exactly the same

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WALLETS

What is a cryptocurrency wallet?

Keys, addresses, custody and self-custody explained in simple language

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SECURITY

What is a private key?

An introduction to the cryptographic concept used to authorize actions on a blockchain

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SECURITY

What is a seed phrase?

What a recovery phrase represents and why it is central to self-custody

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EXCHANGES

What is a cryptocurrency exchange?

How these platforms work in general and which concepts are important to understand

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WALLETS

What does custody mean in crypto?

The difference between having a provider hold keys and managing them directly

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STABLECOINS

What is a stablecoin?

How digital assets designed to track a reference value work

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STABLECOINS

What is USDT?

A neutral explanation of Tether USDt, its reference value and its presence on different networks

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STABLECOINS

What is USDC?

Basic concepts about USD Coin, its issuance and blockchain representations

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NETWORKS

What is a blockchain network?

Understand what a network means and why standards differ across blockchains

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NETWORKS

What is ERC-20?

The best-known fungible-token standard in the Ethereum ecosystem

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NETWORKS

What is TRC-20?

An explanation of the fungible-token standard used on the TRON network

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NETWORKS

What is BEP-20?

Basic concepts about the BNB Smart Chain token standard

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BLOCKCHAIN

What is gas in blockchain?

Why some networks charge execution fees and how their use is understood conceptually

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BLOCKCHAIN

What is a hash?

An introduction to hash functions and their role in data integrity

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BLOCKCHAIN

What is a smart contract?

Code that runs on a blockchain according to predefined rules

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SECURITY

What is phishing in crypto?

How scams impersonate websites, applications or people to obtain credentials

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SECURITY

Seed phrase, 2FA and phishing: security fundamentals

Three essential concepts for understanding account and wallet security

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