HappyCryptoAE

A power event hit Google Cloud’s London region, disrupting banks, Revolut and court video cameras.
Google Cloud said the power event hit its europe-west2-b zone and has been mitigated.
It reported signs of service recovery and said customers may still be unable to create new workloads.
Revolut, Lloyds and Halifax reported app disruption, though the link to the outage was not officially confirmed.
Court video cameras and other online platforms also had problems after users flagged issues online.
💬 How much should critical services depend on one cloud region?
Source: The Guardian, BBC, The New York Times
Trading crypto from Dubai since 2019.
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#AI #Tech #CryptoNews

JPM Coin now lets approved institutions move bank dollars on Ethereum in seconds, any day.
JPMorgan is rolling out JPM Coin on Ethereum for institutional clients.
Each unit stands for a dollar already sitting in a JPMorgan account.
Only vetted, approved counterparties can hold it, so it is not a coin anyone can buy on an exchange.
The bank began testing blockchain settlement because normal bank wires can take days and only move during business hours.
💬 Would companies trust bank tokens more on public blockchains?
Source: Decrypt
Trading crypto from Dubai since 2019.
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#CryptoNews #Crypto #Binance

Gwei is a small unit of ether - one billionth of an ETH - used to express gas prices. When a wallet shows a gas price of 12 gwei, each unit of gas your transaction uses costs 12 billionths of an ether.
Your fee is the gas the transaction needs multiplied by the gas price. A simple transfer uses little gas; a complex contract interaction uses far more. Prices rise and fall with demand for block space, so the same action can cost very different amounts at different hours. Glancing at the gas price before a transaction that is not urgent is one of the easiest ways to stop overpaying.
💬 Do you check gas prices before sending, or just press confirm?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/gwei
Next lesson: EIP-1559: why part of every fee is burned
Trading crypto from Dubai since 2019.
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#Gwei #Ethereum #GasFees

The Ethereum Virtual Machine is the environment that runs smart contracts. Every node executes the same instructions and must reach the same result, so a contract behaves identically wherever it runs - like one global computer that nobody owns and nobody can switch off.
Its influence reaches well beyond Ethereum. Many other networks, BNB Chain included, are EVM-compatible: the same contracts, wallets and developer tools work on them. That is why the same address format shows up across chains, and why apps can launch on several networks at once. It is also why a flaw in a popular contract can be copied across chains just as easily.
💬 How many EVM chains do you use without really thinking about it?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/ethereum-virtual-machine-evm
Next lesson: Gwei: how Ethereum prices your transaction
Trading crypto from Dubai since 2019.
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#Ethereum #EVM #SmartContracts

A full node is a computer that downloads every block and checks every rule for itself: signatures, amounts, the supply schedule, all of it. It accepts nothing because someone said so. If a block breaks a rule, the node rejects it, whoever mined it.
Thousands of independent nodes are what actually enforce Bitcoin's rules. Miners propose blocks; nodes decide whether they are valid. You do not need a node to use bitcoin, and most people rely on someone else's. But running one means your wallet checks payments against rules you verified yourself - the purest version of "don't trust, verify".
💬 Have you ever thought about running your own node?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/full-node
Next lesson: The EVM: one computer shared by thousands
Trading crypto from Dubai since 2019.
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#FullNode #Bitcoin #Decentralization

A satoshi is the smallest unit of bitcoin: one hundred-millionth of a coin, 0.00000001 BTC, named after the network's pseudonymous creator. Many wallets show amounts in "sats" for the obvious reason - small whole numbers are easier to read than long decimals.
It also clears up a common misconception. Newcomers often assume bitcoin must be bought one whole coin at a time, like a share. It does not. Bitcoin divides into a hundred million pieces, and most holders own fractions. Thinking in sats makes that obvious: the price of one coin tells you nothing about the smallest amount you can hold.
💬 Do you think in BTC or in sats?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/satoshi
Next lesson: A full node trusts nobody - including you
Trading crypto from Dubai since 2019.
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#Satoshi #Bitcoin #CryptoEducation

The Lightning Network is a second layer on top of Bitcoin built for fast, cheap payments. Two parties lock funds in a shared channel on-chain, then pay each other off-chain as often as they like, updating the balance instantly. Only opening and closing the channel touch the main chain.
Payments can hop across connected channels, so you do not need a direct channel with everyone you pay. The trade-offs: channels need liquidity, your wallet or a service has to manage them, and very large payments may be better settled on-chain. For small, frequent payments it turns ten-minute blocks into seconds.
💬 Have you ever paid over Lightning? What was it for?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/lightning-network
Next lesson: The satoshi: why nobody needs a whole bitcoin
Trading crypto from Dubai since 2019.
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#LightningNetwork #Bitcoin #Payments

Bitcoin does not store balances. It stores unspent transaction outputs - UTXOs - which work like individual banknotes of different sizes sitting at your address. Your wallet adds them up and shows you a total.
When you pay, your wallet picks some of those "notes", spends them whole, and sends the excess back to you as change. That is why a transaction can have several inputs and an output back to yourself that you never typed. It also explains fees: they depend on the data size of the transaction, so a wallet full of tiny UTXOs can cost more to spend than one holding a few large ones.
💬 Had you noticed the "change" output in your own transactions?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/unspent-transaction-output-utxo
Next lesson: Lightning: paying without waiting for a block
Trading crypto from Dubai since 2019.
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#UTXO #Bitcoin #CryptoEducation

Bitcoin aims for one block roughly every ten minutes, however many miners join or leave. The mechanism is the difficulty adjustment: every 2,016 blocks - about two weeks - the network checks how fast blocks arrived and resets the target.
If blocks came too quickly, mining gets harder; too slowly, it gets easier. That is why a surge of new mining hardware does not release coins faster than planned - the rules simply raise the bar. A small piece of code doing a big job: keeping the issuance schedule predictable without anyone in charge of it.
💬 Did you know Bitcoin retunes its own difficulty every two weeks?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/difficulty
Next lesson: UTXO: why your bitcoin balance is a pile of coins
Trading crypto from Dubai since 2019.
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#Bitcoin #Mining #Difficulty

Hash rate is the total computing power miners point at a proof-of-work network, measured in attempts per second. Bitcoin's is counted in exahashes - billions of billions of attempts every second.
It is a rough gauge of security: the higher it is, the more expensive it becomes for anyone to overpower the honest miners. It also reflects miner commitment, because hardware and electricity are paid for in advance. Hash rate does not predict price, and short dips happen for mundane reasons like weather or power costs. But a hash rate that keeps climbing over years means people are spending real money to protect the network.
💬 Do you follow hash rate, or is it one metric too many?
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/hash-rate
Next lesson: Difficulty adjustment keeps Bitcoin on schedule
Trading crypto from Dubai since 2019.
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#HashRate #Bitcoin #Mining