blockchains

In tutto gli Emirati Arabi Uniti, l'istruzione si sta sempre di più allineando con l'economia digitale e le tecnologie emergenti — e questo include le basi del bitcoin e della blockchain integrate nell'apprendimento in aula per potenziare la competenza digitale e le competenze orientate al futuro.

Nei recenti aggiornamenti del curriculum, le autorità hanno deciso di integrare i concetti fondamentali del bitcoin e della blockchain insieme a temi più ampi come l'intelligenza artificiale e la tecnologia digitale. Esponendo gli studenti a queste idee fin dall'inizio della loro formazione, gli Emirati Arabi Uniti mirano a dotare una generazione degli strumenti necessari per comprendere come funzionano i sistemi decentralizzati, come opera la finanza digitale e come queste innovazioni si collegano alle tendenze economiche e tecnologiche globali.

Blockchain is one of the most talked-about technologies today, especially because it powers cryptocurrencies like Bitcoin. But blockchain is not just about money — it solves a deeper problem: trust.
To understand how blockchain works, let’s break it down step by step.
1. What is Blockchain?
A blockchain is basically a digital ledger (like a notebook) that records information in a secure and transparent way.
But unlike normal notebooks or databases, blockchain is:
✔ Decentralized (not stored in one place)
✔ Secure (almost impossible to hack or change)
✔ Transparent (everyone can verify the records)
2. The Role of Blocks
Think of blockchain as a chain made of blocks.
Each block contains:
A list of transactions/data
A timestamp
A special code called a hash
Example transaction stored inside a block:
Ali sent 0.2 $BTC Bitcoin to Sara
Sara sent 1 $ETH to John
Blocks are linked together like this:
Block 1 → Block 2 → Block 3 → Block 4 → ...
3. What is a Hash and Why It Matters
A hash is like a fingerprint of a block.
It is generated using a mathematical formula.
Key facts about hashes:
Each block has a unique hash
If you change anything inside a block, its hash changes instantly
This makes tampering extremely difficult.
4. How Blocks Connect (The Chain Part)
Each block not only has its own hash, but also stores the hash of the previous block.
Example:
Block 3 stores the hash of Block 2
Block 2 stores the hash of Block 1
So if someone tries to change block 2, its hash changes, and block 3 becomes invalid because it has the old hash.
This is how blockchain protects data.
5. Decentralization: No Single Owner
In a traditional system (like a bank), data is stored in one server.
But in blockchain, data is stored across thousands of computers called nodes.
Each node has a copy of the blockchain.
So if one computer fails or tries to cheat, the network rejects it.
6. How Data Gets Added (Consensus Mechanisms)
Blockchain must agree before adding new data. This agreement is called consensus.
Two common methods:
a) Proof of Work (PoW)
Used by Bitcoin. Miners compete to solve math puzzles.
Winner gets to add the new block and earns a reward.
b) Proof of Stake (PoS)
Used by Ethereum 2.0. Users “lock” coins as stake.
Chosen validators add blocks and earn rewards.
Both ensure that no one can cheat easily.
7. Why Blockchain is Secure
Blockchain security comes from 3 main things:
✔ Cryptography
Hashes make tampering visible.
✔ Decentralization
No single point of failure.
✔ Consensus
Network must agree before data is added.
To hack blockchain, someone would need to control 51% of the network, which is extremely difficult and expensive.
8. Common Uses of Blockchain
Blockchain is not only for crypto. It is now used in:
🚚 Supply Chain Tracking – tracking products from factory to consumer
🏦 Finance & Banking – faster transactions, smart contracts
💊 Healthcare – secure medical records
🎨 NFTs – digital ownership of art and media
🗳 Voting Systems – making elections more secure
9. Key Benefits
Blockchain gives:
⭐ Transparency – anyone can verify data
⭐ Security – data cannot easily be changed
⭐ No Middlemen – direct peer-to-peer transactions
⭐ Efficiency – faster and automated processes
10. Summary
To sum it up in simple words:
Blockchain = A secure, decentralized, digital notebook where data is stored in linked blocks, protected by cryptography, and validated by the entire network.
It allows people to exchange value and information without needing to trust a central Authority
$BNB


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La Corea del Sud sta compiendo un passo decisivo verso l'approvazione degli ETF su Bitcoin a contanti (spot Bitcoin ETFs) per il 2026, un movimento strategico progettato per attrarre capitale straniero, rafforzare il suo mercato finanziario e allinearsi con le principali giurisdizioni che hanno già adottato questi strumenti, come gli Stati Uniti e Hong Kong. (MEXC)
🧩 Cosa sta proponendo Seul?
Finora, la legislazione sudcoreana non permetteva che criptovalute come Bitcoin fossero considerate attività sottostanti valide per gli ETF, bloccando così la creazione e la negoziazione di prodotti di questo tipo sulla sua borsa locale. (MEXC)

Dusk Network llega como el pana discreto que sabe guardar secretos, DUSK es una blockchain enfocada en privacidad + cumplimiento legal, algo que casi nunca va junto. Usa contratos inteligentes confidenciales y pruebas criptográficas avanzadas para que empresas y usuarios puedan operar sin exponer toda su vida financiera.
¿Lo mejor? No sacrifica velocidad ni eficiencia.
Privacidad real, sin vibes shady.
Eso es jugar en modo experto
#Dusk. #blockchains #Privacidad #CryptoReal