Solidity

Solidity — це сучасна мова програмування, яка використовується для створення смарт-контрактів на блокчейні Ethereum та інших платформах, сумісних із Ethereum Virtual Machine (EVM). Її синтаксис нагадує JavaScript, що робить її доступною для розробників із досвідом у веб-програмуванні. Ось основи, які варто знати, щоб почати програмувати на Solidity.
Основні концепції
Смарт-контракти Смарт-контракт — це програма, яка автоматично виконує свою логіку після ініціації. Solidity дозволяє визначити правила, права доступу та автоматизацію процесів у блокчейн-системах.Типи даних Solidity підтримує статичну типізацію. Ви можете використовувати базові типи, такі як uint(цілі числа без знаку), int (цілі числа зі знаком), bool, address, а також складні типи: масиви, структури й карти (mapping).Функції Функції визначають поведінку смарт-контракту. Вони можуть бути зовнішніми (external), публічними (public), приватними (private) або внутрішніми (internal), залежно від потреби.Модифікатори доступу За допомогою модифікаторів, таких як onlyOwner, можна забезпечити управління правами доступу.
Як Solidity пов'язана з криптовалютою?
Створення смарт-контрактів Смарт-контракти — це автономні програми, які виконуються на блокчейні. Вони дозволяють управляти криптовалютними транзакціями, забезпечувати прозорість і автоматизацію. Наприклад, Solidity використовується для створення токенів стандарту ERC-20 і ERC-721, які є основою для багатьох криптовалют та NFT.Децентралізовані фінанси (DeFi) На платформі Ethereum, за допомогою Solidity, розробляються додатки для децентралізованих фінансів, включаючи платформи для кредитування, обміну криптовалютами та стейкінгу.DAO і управління Solidity також використовується для створення децентралізованих автономних організацій (DAO). Такі організації забезпечують колективне управління активами криптовалюти, з використанням смарт-контрактів.Безпека та транзакції Смарт-контракти, написані на Solidity, забезпечують прозорість і безпеку транзакцій з криптовалютою. Однак вони також потребують ретельного аудиту, щоб уникнути вразливостей.
Інструменти для роботи
Для програмування на Solidity вам знадобляться:
IDE: Remix IDE, Truffle або Hardhat.Блокчейн: Ethereum, Polygon або інша EVM-сумісна платформа.Гаманець: Наприклад, MetaMask для тестування і взаємодії з контрактами.
Висновок
Solidity — це потужний і простий інструмент для розробки децентралізованих додатків. Знання його основ дасть можливість створювати безпечні й ефективні смарт-контракти, відкриваючи нові горизонти у світі блокчейн-технологій.#solidity

XRPL EVM — это революционное решение, которое объединяет мощь #Ethereum и уникальные преимущества #XRP #Ledger . Благодаря этому сайдчейну разработчики могут использовать смарт-контракты, создавать децентрализованные приложения (dApps) и интегрироваться с другими блокчейнами.

Ключевые особенности #XRPL EVM

Совместимость с Ethereum: Поддержка языка #Solidity для разработки и запуска смарт-контрактов.

Высокая производительность: Proof of Authority (PoA) обеспечивает скорость блоков 3,5 секунды и до 1000 транзакций в секунду (TPS).

Мост XRPL EVM: С помощью Axelar осуществляется безопасный и эффективный перенос активов между сетями XRPL и EVM.

🚀 Роль Cosmos SDK
Cosmos SDK играет стратегическую роль в развитии сайдчейна XRPL EVM. Оно предоставляет мощный набор инструментов для повышения гибкости, функциональности и взаимодействия XRPL с другими блокчейнами:

Создание сайдчейнов: Cosmos SDK помогает развивать сайдчейны, такие как XRPL EVM, что увеличивает масштабируемость экосистемы без перегрузки основного реестра XRPL.

Интероперабельность через IBC: Протокол межблокчейн-коммуникации (IBC) позволяет XRPL взаимодействовать с блокчейнами экосистемы Cosmos, обеспечивая плавную передачу активов и данных между сетями.

Поддержка Ethereum Virtual Machine (EVM): Интеграция с Cosmos SDK даёт возможность запускать смарт-контракты и децентрализованные приложения, улучшая функциональность сайдчейнов.

Объединение экосистем: Cosmos SDK позволяет XRPL подключаться к широкому спектру децентрализованных приложений (DeFi, NFT и других решений), уже созданных в экосистеме Cosmos.

Динамичная децентрализация: Cosmos SDK обеспечивает поддержку децентрализованных механизмов, таких как Proof of Stake (PoS) и Proof of Authority (PoA), что увеличивает безопасность и стабильность.

🌌 Примеры приложений на XRPL EVM
Многоцелевые токены (MPT): Позволяют токенизировать реальные активы, такие как недвижимость и облигации.

Sologenic: Инструмент для токенизации акций, ETF и фиатных валют.

XRPL EVM Bridge: Мост для передачи активов между XRPL и другими сетями.

✨ XRPL EVM и Cosmos SDK — это синергия, которая открывает новые горизонты для разработчиков и пользователей.

Hello everyone, I am here with great opportunity for everyone. I can help you create your own cryptocurrency on Ether or BNB chain. It is a complete Course of
How to Develop Blockchain & Solidity with Python + Coin development.
Course details:
Total Hours: 116
Total Lectures: 82
Key learnings:
Welcome To Blockchain, Welcome to Remix! Simple Storage, Storage Factory, Fund Me, Web3.py Simple Storage, Brownie Simple Storage, Brownie Fund Me, SmartContract Lottery, Chainlink Mix, ERC20s, ElPs, and Token Standards, Defi & Aave, NFTs, Upgrades, Full Stack Defi
If you’re interested, Comment Below and get started!!!
#Coindev #BlockchainDevelopment #solidity

Bitcoin isn’t the only game in town—altcoins are redefining crypto with innovative technology and real-world use cases. From DeFi to AI, these digital assets are solving Bitcoin’s limitations and shaping the future of finance. But with thousands of options, which ones truly matter? Let’s dive into the world of altcoins and uncover their potential!
What is an Altcoin ?
“Altcoin” is a combination of two words: “alt” and “coin”. The word “alt” is short for alternative and “coin” means uh coin.
So the word, “altcoin” comes from the idea that all other #cryptocurrencies are considered “alternative” coins to bitcoin $BTC , the original cryptocurrency.
Altcoins are considered to be called an alternative to Bitcoin because they are perceived to be attempts to either take the place of or improve upon #Bitcoin.
How Altcoins were created ?
A benefit of open source software like Bitcoin is that anyone in the world can take the original codebase and try to improve or extend the software’s functionality.
Open source software is software with source code that anyone can inspect, run, copy, modify, and enhance.

To give credit where credit is due, the first altcoin was Namecoin (NMC)

Namecoin’s mission was to provide a decentralized domain name service (DNS) system.
Instead of websites being limited to using domains ending with “.com” or “.net“, which were under the control of ICANN (the main governing body for domain names), it created the “.bit” domain that is independent of ICANN and could not be censored or shut down.
For example, instead of using “binance.com” as our website URL, It could be registered as “binance.bit” by buying it with some NMC and use that as the URL instead. Unfortunately, the barrier to figuring out how to actually view “.bit” websites was too high. Namecoin was really hard to use which limited its adoption.

Types of Altcoins
Altcoins encompass all cryptocurrencies besides Bitcoin, and they can be broadly categorized by their purpose, such as payment, utility, stablecoins, governance, and security tokens.

1. Payment Cryptocurrencies:
These are designed primarily for facilitating transactions, similar to Bitcoin, but potentially with faster speeds or lower fees. 
Examples includes ;
Litecoin (LTC):  Believed to be ''Silver's to Bitcoin's gold'', created from the Bitcoin's souce code in 2011 by Charlie Lee , a developer at Google.
While #Litecoin is based on Bitcoin’s source code, it has a few technical differences such as a faster transaction confirmation time (2.5 minutes vs. 10 minutes), a different hash function used for mining (Scrypt vs. SHA-256), and a larger maximum supply (84 million vs. 21 million).
Ripple (XRP): Ripple's founders wanted to create a platform for banks that was designed to allow international cross-border payments to be completed in seconds at a low cost.
The creators chose the ticker symbol “XRP” from the term “ripple credits” or “ripples” and the “X” prefix for non-national currencies based on the ISO 4217 standard

2. Utility Tokens:These tokens provide access to specific services or products within a particular ecosystem. Examples includes ;Binance Coin (BNB): 
$BNB is the native token of the decentralized BNB Chain, where it powers transactions, pays for fees, and allows for participation in governance. It can also be used on the Binance exchange for benefits such as trading fee discounts, token airdrops, and VIP membership. The BNB burn mechanism involves periodically buying back and permanently destroying a portion of BNB tokens to reduce the total supply. Check BNB's price page for real-time updates on market cap and price movements. Ether (ETH): The native token of the Ethereum blockchain, used for paying transaction fees and powering decentralized applications (dApps). 3. Smart Contract Platforms:These cryptocurrencies enable developers to build decentralized applications (dApps) and smart contracts.Ethereum (ETH): Dissatified with the bitcoin scripting language mainly for processing transaction Vitalik Buterin, introduced Ethereum as a platform that could take blockchain and use it for things beyond digital currency.Ethereum was built on language called #solidity to allow developer to create decentralized applications ( #dApps ) and tokens.Cardano (ADA): A platform for building dApps, particularly in areas like finance, identity management, and supply chain tracking. 4. Stable coinsA stablecoin is an altcoin that is designed to maintain a stable price over time.Stablecoins are stable because they “peg” their value to an underlying asset. The underlying asset can be fiat money like USD or another cryptocurrency.Not all stablecoins are tied to asset some depends on the algorithm that maintain their price by managing the supply of #stablecoins in circulation. Examples includes ; Binance USD ( BUSD )#Binance USD (BUSD) is a stablecoin, pegged to and backed by the U.S. dollar.It is pegged 1:1 with the U.S. dollar where 1 BUSD is equivalent to $1 in value.While BUSD s named after Binance, the largest crypto exchange, another company, Paxos, is actually the issuer of #BUSD, since all the U.S. dollars backing up BUSD are kept in its custodyTether ( USDT )
The third-largest cryptocurrency, only behind bitcoin (BTC) and ether (ETH).
Tether was the first stablecoin.  Like Bitcoin is to cryptocurrencies, Tether is to stablecoins. The OGs of their kinds.Tether ($USDT ) is a fiat-collateralized stablecoin that’s pegged to the price of the U.S. dollar.
5.Memecoins
Meme coins are basically crypto’s wild, joke-fueled side, cryptocurrencies born from viral memes, internet culture, and pure chaos.
They blow up when people online hype them into oblivion. No utility? No problem! Just add a dog mascot or a frog meme, and suddenly it’s worth millions!
Popular #memecoin🚀🚀🚀 are ;
Dogecoin ( DOGE )It is the original meme coin. It’s based on the “doge” meme, which originated with a photo of a Shibu Inu dog.
Dogecoin’s popularity was further boosted by famous billionaires, Elon Musk and Mark Cuban, tweeting about $DOGE.  With all this attention, Dogecoin’s price surged and become one of the ten largest cryptocurrencies! Shiba Inu ( SHIB )
Shiba Inu is an ERC-20 token built on top of the Ethereum blockchain. This differs from #Dogecoin which runs on its own native blockchain. Due to the fact that SHIB is built on top of Ethereum and has #SmartContracts capabilities, it technically has a lot more use cases than DOGE, which basically acts like Bitcoin for jokesters.SHIB even briefly overtook DOGE as the “top dog” in October 2021.
Shiba Inu skyrocketed in popularity when Elon Musk tweeted about his dog, saying, “My Shiba Inu will be named Floki.” Pepe (PEPE)Pepe (PEPE): Based on the popular internet character #PEPE‏ the Frog, this meme coin has attracted attention due to its association with the widely recognized meme $TRUMP: Launched by U.S. President Donald Trump three days before his second inauguration, this meme coin experienced a rapid rise in market capitalization before facing significant volatility. $LIBRA: Promoted by Argentine President Javier Milei in February 2025, $LIBRA aimed to stimulate the Argentine economy but faced controversy and a rapid decrease in value following its initial surge.​$CAR: Announced by Central African Republic’s President Faustin-Archange Touadéra in February 2025 as the country’s official meme coin, $CAR experienced a dramatic drop in value shortly after its introduction
6.Privacy coins
Contrary to popular belief, most cryptocurrencies including Bitcoin do NOT provide anonymity. As part of its design, transactions that are recorded on a blockchain are public.
A Privacy coin is a type of cryptocurrency that use technologies( anonymity and untraceability) to make it very difficult to link an individual to a transaction providing anonymity to parties involved and confidentiality of details of the transaction like the amount.

Popular privacy coins are ;
Monero ( XMR )#Monero is considered the most proven and trusted privacy coin today, so it’s no surprise that it’s also the most popular and largest privacy coin.
It relies on ;
Ring signatures (obscures the true sender by mixing their identity with decoy identities)Stealth addresses (ensures only the sender and receiver know a payment’s destination)RingCT (hides the transaction amount)Dandelion++ (makes it hard to link a transaction to an IP address)
Monero makes transactions unlinkable and untraceable and hides the identities of both the sender and receiver, along with the transaction amounts being transferred
Dash (DASH) Dash uses a method known as “CoinJoin” (branded as their “PrivateSend” feature) that offers privacy by shuffling your Dash with other users, making it difficult to identify your specific transaction and trace your transaction history.

Other privacy coins are Zcash (ZEC), Secret (SCRT), Oasis Network (ROSE), Decred (DCR), Horizen (ZEN), and Keep Network (KEEP).

Top Altcoins to watch in 2025Ethereum ($ETH ) Tether USD ( $USDT)Ripple ( $XRP )BNB ($BNB )Solana ($SOL)USDC ($USDC)Cardano ($ADA)Dogecoin ($DOGE)TRON ($TRX)Lido Staked Ether ( stETH )

How to invest in Altcoins ?To buy altcoins, check if they are listed on #Binance, as the platform regularly adds new cryptocurrencies. If unavailable, visit CoinMarketCap’s Markets section to find a centralized exchange where the altcoin is listed. Alternatively, use a decentralized exchange (DEX) that supports the altcoin’s blockchain. You can connect your crypto wallet to a DEX and use your Binance account to purchase the base currency needed for the transaction. 🚀
Altcoins are shaping the future of crypto, offering endless opportunities beyond Bitcoin. Which altcoin do you believe has the most potential? Drop your thoughts in the comments! 🚀👇 Don’t forget to follow for more crypto insights!