What is an oracle in blockchain? Oracles are data feeds that bring data from off the blockchain (off-chain) data sources and puts it on the blockchain (on-chain) for smart contracts to use. This is necessary because smart contracts running on Ethereum cannot access information stored outside the blockchain network. Okay, what kind of oracles are there? Oracles can be centralized and decentralized. Centralized…

WireGuard — is one of the most popular open-source VPN protocols. Unlike other solutions, it is the fastest and safest. But is it a good choice? I found the following benchmarks on the WireGuard website:

Let’s face that the majority NFTs are worthless. We value some social achievements: diplomas, recommendations written by experts and companies. We share this information with others, giving it a special significance. This doesn’t happen to NFT. In May 2022, Vitalik Buterin, Pooja Olhaver and Glen Weyl published the article that…

At the moment, Polygon is the most popular L2 solution for Ethereum. Polygon gained popularity due to the fact that the main network has increased commissions and fairly low transaction processing speed. In this regard, most decentralized applications choose Polygon as the main chain for the operation of the application. …