The oracle's business model is to execute off-chain (off-blockchain) queries and return them to the contract in exchange for a fee, which the contract pays by asking oracles for off-chain data.

So how do we create a decentralized oracle? The model is as follows: a contract should ask several oracles to execute the same query, get results from each oracle, and then determine the correct answer on its own based on multiple results (answers from multiple oracles).

External data to the smart contract (from outside the blockchain) can be provided only, as parameters (arguments) of its call. Oracles are software running outside the blockchain, which listens for "requests" by smart contracts for external data, and then provides this data to the smart contract, by calling the appropriate…

In this article I will explain how can you setup self hosted Lightning Network (at home or anywhere) to get public (not changing) IP for 5$/month what will make your node public - other nodes will be able to open channels to your node. This is not TOR based solution. This is not DDNS based solution.

In April 2019 I decided to completely stop developing my cryptocurrency project ending entire year of full time work in failed tech startup which I wanted to create. During that time: I spent about 2200 hours hardcore coding, writing, meeting, pitching, calling and everything else related to building a startup - in that case a…