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What Can a Blockchain Do?Establish digital identity
The identity component of blockchain technology is fulfilled through the use of cryptographic keys.Combining a public and private key creates a strong digital identity reference based on possession.A public key is how you are identified in the crowd (like an email address), a private key is how you express consent to digital interactions.Cryptography is an important force behind the blockchain revolution.Prove Immutability
A feature of a blockchain database is that it has a history of itself.Because of this, they are often called immutable.In other words, it would be a huge effort to change an entry in the database, because it would require changing all the data that comes afterwards, on every single node.In this way, it is more a system of records than a database.Serve as a platform
Cryptocurrencies were the first platform developed using blockchain technology.Now, people have moved from the idea of a platform to exchange cryptocurrencies to a platform for smart contracts.The term 'smart contracts' has become somewhat of a catch-all phrase, but the idea can actually be divided into several categories:

There are the 'vending machine' smart contracts coined in the 1990s by Nick Szabo.This is where machines engage after receiving an external input (a cryptocurrency), or else send a signal that triggers a blockchain activity.There are also smart legal contracts, or Ricardian contracts.A contract can be a mix of a verbal agreement, a written agreement, and now also some useful aspects of blockchains like timestamps, tokens, auditing, document coordination or business logic.Finally there are the Ethereum smart contracts.These are programs that control blockchain assets, executed over interactions on the Ethereum blockchain.Ethereum itself is a platform for smart contract code.
Work details
Budget 2000 UAH
Added 4 July 2021
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Freelancer
Tetiana Gonchar
Ukraine Kyiv  444  0  1

Available for hire Available for hire
447 Safe completed
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On service 3 years