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Questions and Answers
Qual è la funzione della crittografia nella blockchain?
Qual è la funzione della crittografia nella blockchain?
- Verificare le transazioni
- Collegare i blocchi in modo sicuro
- Validare nuove transazioni
- Proteggere i dati salvati sulla blockchain (correct)
Quali sono le potenziali applicazioni della tecnologia blockchain?
Quali sono le potenziali applicazioni della tecnologia blockchain?
- Solo nel settore bancario
- In diversi settori, tra cui la finanza, l'assicurazione peer-to-peer, l'IoT, e altro ancora (correct)
- Solo nella certificazione di processi
- Solo nella registrazione di proprietà immobiliari
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Study Notes
- Blockchain is a data structure that consists of a growing list of records called blocks linked together securely using cryptography.
- Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data.
- Blockchain is a type of distributed ledger that does not require nodes to know each other's identity or trust each other.
- Transactions on the blockchain are irreversible once recorded.
- Blockchain offers security, reliability, transparency, and cost-effectiveness as an alternative to centralized databases.
- The first blockchain was introduced in 2008 by Satoshi Nakamoto to serve as a ledger for Bitcoin transactions.
- Blockchain is a decentralized system that uses ad hoc messaging and distributed networking to store data across its network.
- The data saved on the blockchain is considered incorruptible.
- Blocks in the blockchain consist of an header and a body, with transactions enclosed in the body and the header containing fields for managing the block.
- Validating new transactions and adding them to the blockchain is done by nodes or miners in the decentralized system.
- Nodes verify the blockchain, collect new transactions, and suggest the next block.
- Hash functions are used to estimate the output, and the first node to solve the block transmits it to the network.
- Blockchain can be open or private, with permissioned or permissionless access.
- Blockchain has the potential to transform business models and improve global supply chains, financial transactions, and distributed social networks.
- Blockchain can be used for notarization, certification, and automation of various processes.
- Blockchain has applications in cryptocurrency, peer-to-peer insurance, banking, IoT, and more.
- UBS and other banks are exploring blockchain technology to increase efficiency and reduce costs.
- Blockchain can be used to register territories and protect intellectual property.
- The Big Four accounting firms are testing blockchain technology.
- Georgia is experimenting with a blockchain-based property registry.
- Ernst & Young is actively leading the blockchain revolution with employees and clients.
- Deloitte, PricewaterhouseCoopers, and KPMG are testing private blockchains.
- Smart contracts based on blockchain can be programmed to execute agreements without human interaction.
- Blockchain technology can be used for permanent, public, transparent ledgers for data compilation and copyright authentication.
- The technology can also be used in the tourism industry for optimizing processes and speeding up transactional payments.
- ABN AMRO is developing blockchain-based solutions for real estate and logistics.
- Some governments are exploring blockchain-based solutions for their national currencies.
- The first peer-reviewed journal dedicated to research on cryptocurrencies and blockchain is called Ledger.
- The World Economic Forum predicts that by 2025, 10% of global GDP will be stored on blockchain or similar technologies.
- Challenges include the lack of widespread use of smart contracts and the potential for security issues with blockchain technology.
- Blockchain technology is complicated and requires specialized software developers to manage the structure.
- Blockstream is a company founded in 2014 in Canada with a high number of Bitcoin Core developers.
- The company raised $76 million in funding from venture capital in 2016.
- Blockstream collaborates to separate the Bitcoin technology from its payment circuit by building an independent network.
- The separation is ensured by the Lightning Network and a global network of satellite connections outside of the internet.
- The Lightning Network is designed to make payment adoption possible in retail markets.
- Blockstream launched the fifth and final geostationary satellite in 2018, completing a network that covers the entire planet except for Greenland and Antarctica.
- The satellite network reduces the cost of connecting to the Bitcoin network and transaction costs, increasing geographic coverage and market penetration.
- However, the satellite network is still one-way, and users need to connect to the Bitcoin network to send encrypted messages and regulate Lightning Network payments.
- Users also need to invest in hardware, such as a dish, terminal, and USB device, which can be costly for developing countries with a digital divide.
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