Educatewithme

What are oracles in blockchain? (and why they are essential for DeFi, GameFi, and more)
Blockchain is a closed system. It does not know what the weather is today, who won the match, or how much a dollar costs. But what if a smart contract needs this information?
Here come the oracles - the bridge between the blockchain and the outside world.

When we talk about cryptocurrencies, most people immediately think of Bitcoin. But the real technological breakthrough actually began with Ethereum — not just a cryptocurrency, but a whole decentralized platform for creating applications that work without third-party involvement.
At the core of Ethereum is the concept of smart contracts.

🔥 Error #1: Going all in
What happens:
Beginners often buy tokens after hearing 'pump' on Telegram or YouTube. Without analysis, without strategy, with all their money.
How to avoid:
Start with small amounts to understand the market.
Always keep cash in USDT/USDC in case of a dip.
Stick to the 10% rule: don't invest more than 10% of your portfolio in one asset.

PoW vs PoS: how consensus works in blockchain?
After we understood what consensus is, it's time to move on to the two most popular algorithms:
1. Proof of Work (PoW)
Essence: miners compete to solve a complex problem to add a block.
Security: high, as an attack requires enormous computational power.

In the world of cryptocurrencies, blockchain openness is both a blessing and a potential risk. Every user can view any transactions, wallet balances, and token movements. But how to use this safely without revealing yourself and your actions?
Here are the key principles:
1. Use blockchain explorers wisely

Hash functions are one of the cornerstones of blockchain technology. They are mathematical algorithms that transform input data of any length into a fixed-length string — a hash. Even the slightest change in the input data completely alters the hash, making any forgery easy to detect.

Custodial vs Non-Custodial: who do you trust your crypto assets with?
When you create a crypto wallet or work with an exchange, it is important to understand: who controls your funds — you or someone else?
Custodial solutions
Your keys — not yours.
You trust a third party (most often — a centralized exchange) that stores your assets and manages the private keys.

What is a dusting attack?
A dusting attack (from English dust) is a type of attack where attackers send tiny amounts of cryptocurrency (literally 'dust') to users' wallets to try to deanonymize wallet owners. Although such amounts are often negligible and worthless, their goal is not to steal funds but to collect data.

Imagine you have two different train stations: one uses electric trains, the other uses diesel. There is no direct path between them. To transport passengers or cargo, you need to build a bridge that connects these two systems. In the crypto world, such a 'crossing' is called a blockchain bridge.

DeFi (decentralized finance) promises freedom from traditional banks, but this freedom comes with a certain degree of risk. Let's break it down step by step.
Advantages of DeFi:
1. Accessibility — no bank or intermediary is needed to participate. A smartphone and a wallet are enough.
2. Transparency — all operations occur on the blockchain, you can check the code and actions of smart contracts.

What is tokenomics?
Tokenomics (from English token + economics) is a set of rules and mechanisms that define how the token's economy functions within a crypto project. It covers everything from token emission and distribution to their use and incentives for network participants.
Key elements of tokenomics:

Your funds are safe if your phrase is safe
1. What is a seed phrase?
These are 12–24 words that are the only key to your wallet. If you lose them — you lose everything.
If someone else learns it — you no longer own your crypto assets.
2. What not to do:
🚫 Do not store in phone notes

#Educatewithme #blockchain
Imagine a digital ledger that keeps records of transactions in a database.

If stored on a single computer and managed by one organization, such a database can be vulnerable to manipulation, hacking, power outages, equipment failures, and other undesirable events.

Recently, Binance added a new promising token to Launchpool — $HUMA from the Huma Finance project. What is this creature, where did it come from, and why should you keep an eye on it? Let's break it down step by step.
What is Huma Finance?
Huma Finance is a decentralized PayFi network (Payment Finance) that allows companies and users to attract funding based on future revenues. This means you can tokenize your receivables (or future income) and use them as collateral.

#blockchain #Educatewithme
1. Centralization vs. Decentralization
Regular DB: controlled by a single admin (for example, a company stores user data on its server).
Blockchain: a copy of the data is stored by thousands of network participants; no one can unilaterally change everything.
2. Data Mutability
Regular DB: records can be edited or deleted.

The seed phrase is a set of words (usually 12 or 24) that allows you to regain access to your cryptocurrency wallet. It is created during the initial setup of the wallet and acts as the 'key to all keys.'
Each word in the phrase is taken from a standardized dictionary, and the order of words matters. The seed phrase is used to generate private keys that control your assets. This means that by owning just this phrase, you can restore your wallet on any device.

What is DAO?
DAO (Decentralized Autonomous Organization) is a form of organization managed not directly by people, but through code and smart contracts. All decisions in a DAO are made in a decentralized manner, usually by voting among token holders.
Key principles of DAO:
Autonomy: the rules of the DAO are embedded in the code and executed automatically.

Decentralized exchanges (DEX), such as Uniswap, PancakeSwap, 1inch or SushiSwap, give users complete control over their funds, but with that comes full responsibility for security. Below are the main principles of safe trading on DEX.
1. Connect your wallet only to verified DEX.

What is a Rug Pull?
Rug Pull (translated from English as 'pulling the carpet out from under') is a form of fraud in cryptocurrencies and DeFi, where the project team suddenly disappears with investors' money. It is one of the most common and destructive types of scams in the crypto space.
This usually happens as follows:

DeFi (decentralized finance) is a system of financial services built on the blockchain, where there are no intermediaries like banks and brokers. Everything that financial institutions used to do can now operate through smart contracts: automatically, transparently, and without trust in a third party.