basicsofcrypto

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Kripto ticarəti, mənfəət əldə etmək üçün rəqəmsal aktivlərin alınması və satılması deməkdir.

Etibarlı bir birja, hesab və ticarət cütləri ilə əmrlər növləri haqqında biliklərə ehtiyacınız var.

Məşhur strategiyalar arasında gündəlik ticarət, swing ticarəti, scalping və HODLing var.

Uğur, texniki + fundamental analiz və güclü risk idarəetməsindən asılıdır.

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Kriptovalyuta ticarəti niş fəaliyyətindən qlobal bir trenda çevrildi, hər kəsdən təsadüfi investorlar və böyük maliyyə institutlarına qədər cəlb edir. Lakin yeni başlayanlar üçün kripto aləmi yüklü görünə bilər — yeni terminlər, dəyişkən bazarlar və sonsuz strategiyalar.

ERC-20 tokens are the fundamental technical standard for creating fungible (interchangeable) digital assets on the Ethereum blockchain, powering everything from stablecoins like USDT to governance tokens in decentralized finance .
🤔 What Exactly is ERC-20?
Technically, ERC-20 (Ethereum Request for Comments 20) is a set of rules proposed in November 2015 by Fabian Vogelsteller . It defines a common list of functions that all Ethereum tokens must follow . This standardization is crucial because it ensures that thousands of different tokens behave in a predictable way, making them instantly compatible with wallets (like MetaMask), exchanges (like Coinbase), and decentralized apps .
A key characteristic of ERC-20 tokens is that they are fungible . This means each token is identical and holds the same value as another token of the same type. Think of it like a dollar bill—any $1 bill is worth exactly the same as any other $1 bill. This fungibility makes them ideal for use as currencies, utility tokens, or governance tokens .
⚙️ How Do They Work?
ERC-20 tokens operate through smart contracts on the Ethereum blockchain. At its core, an ERC-20 token contract is essentially a sophisticated digital ledger that maps addresses to balances . The standard mandates a specific interface—a set of functions and events—that the smart contract must implement to be considered ERC-20 compliant .
Here are the core functions that make up the ERC-20 standard:
Function What it Does
totalSupply() Returns the total number of tokens that exist .
balanceOf(address) Returns the token balance of a specific address .
transfer(to, value) Sends a specified number of tokens from the caller's address to another .
approve(spender, value) Allows a third party (like a DApp) to spend a certain number of tokens on your behalf .
transferFrom(from, to, value) Executes a transfer of tokens on behalf of an owner, following a prior approval .
allowance(owner, spender) Returns the remaining number of tokens a spender is allowed to use from the owner's account .

In addition to functions, the standard also defines events, which are logs that applications can watch for:

· Transfer: Logged every time tokens are moved from one address to another .
· Approval: Logged when a successful approve() function is called .

💡 Why Are They Important?

The introduction of ERC-20 revolutionized the blockchain space. Here's why it matters :

· Interoperability: Because every token follows the same rules, new tokens work seamlessly with existing infrastructure .
· Ease of Development: It provides a clear framework, simplifying the process for developers to create new tokens .
· Foundation of DeFi: It powers the decentralized finance (DeFi) ecosystem by enabling the creation of liquidity pools, lending markets, and synthetic assets .

However, the standard is not without its challenges. A well-known issue is that tokens can be permanently lost if sent to a smart contract not designed to handle them, as the standard lacks a mechanism to notify the receiving contract . This has led to newer standards like ERC-223 aiming to address these limitations .
I hope this gives you a clear understanding of ERC-20 tokens.
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