What is an oracle?

In these days, Oracles play a major role in the crypto world because they solve the problem of connecting blockchain to the external data sources, in other words, Oracles are any device or entity that connects a deterministic blockchain with off-chain data. They also relay messages and instructions from a smart contract to off-chain external […]

What are ERC tokens?

What is a token? Many people assume tokens and coins are the same, but that’s not correct. While they are often compatible with the cryptocurrencies of that network, they are a wholly different digital asset class. Tokens are units of value that we create on top of existing blockchain networks while Cryptocurrencies are the native asset […]

What are smart contracts on Ethereum?

Smart contracts are tools that enable the users to conduct transactions without third parties. As discussed earlier, they are an alternative to EOAs and generally they are applied on Ethereum blockchain. Nevertheless, in Walliro users are able to apply smart contracts not only on Ethereum but also on other blockchains. A smart contract is a […]

What is a blockchain?

Blockchain is a ledger that stores the data of any type. In other words, it is a creative database technology which is the base of almost all cryptocurrencies. Since it’s a system of recording information, it is difficult or even impossible to change, hack or cheat the system. A blockchain is a digital ledger of […]

What are DEXs?

Although Centralized Exchanges (CEXs) have the possibility of large trades with plenty of liquidity, it is still risky because users do not have ownership of their assets in exchanges. There are a lot of examples of leaked login information and stolen cryptocurrencies in these days. Decentralized Exchanges (DEXs) decrease such risks by using of smart […]

What Is Web3?

Web 3.0 is a term that was first coined and introduced by Gavin Wood, one of the co-founders of Ethereum. The concept of web 3 is based on cryptocurrency and blockchains which are specifically decentralized. In order to understand the meaning of web 3, we must first take a look at web 1 and web […]

What is gas in Ethereum?

People must pay a small fee for all transactions and smart contract executions on Ethereum. This fee is called Gas. Technically, Gas is the unit of measurement on the amount of computational effort required to execute an operation or a smart contract. More complex operations require more gas to fulfill. Gas fees are paid entirely […]