This is a step by step guide that shows how to publish a text in the Roptsten testnet of Ethereum. In order to publish in the Mainnet you will need to select it in the first step of the following tutorial.
Blockchains are already used to store non-financial data for diverse purposes, e.g. to prove authorship of ideas or to prove the existence of a document. One of the largest files stored successfully into the Bitcoin blockchain is an image of Nelson Mandela.
After our articles Smart Contract Auditing: Human vs. Machine and Auditing Solidity code with Slither we decided to test another static analysis tool from ChainSecurity called Securify.
The purpose of this configuration is to generate a Docker environment of 2 nodes connected together running on Geth and monitor them using Ethstat (at localhost:3000). Then we can use MetaMask as well as Remix to connect to the first node (localhost:8545) to send simple transtractions, like sending Ether, or complex transactions like the creation or call of a smart contract.
See our updated article: Algorand Block Explorer and CoinFabrik spin-off Randlabs. AlgoExplorer: A tool for retrieving human-readable data from the new Blockchain Algorand. As you probably know (or you should if you are in the crypto environment), there is a new blockchain right around the corner: Algorand. We are glad to have the opportunity to […]
Following our Smart Contract Auditing: Human vs. Machine article, we now analyze Slither, which is another static analysis tool from Trail of Bits. It includes aids for contract summaries, which can be helpful for making a mental model of the contract and rechecking assumptions. Considering the ease of use, it’s a good idea to try […]
In this article we are benchmarking several auditing tools. The smart contract security audit is a critical phase in the development of smart contracts. The DAO hack was just one trip in the odyssey to secure Ethereum smart contracts and compatible blockchains like RSK and Cardano. It is important to highlight that back in 2016 […]
08-Ago-2018 Update: Removed update and queries point to CoinFabrik servers to solve quota issues in both Google and Crypto APIs. You can get the spreadsheet here. To create your own version go to ‘File’ -> ‘Make a copy’. Keep updated on my Twitter account. Thanks to the smart contract development team.
We present an update of my previous article for cryptocurrency portfolio tracking. I received valuable feedback from some users, and I decided to update the spreadsheet based on those suggestions. The idea with this new spreadsheet, is to add only the transactions in the History tab: And reflect current asset position in the ‘Position’ tab: Also, ‘Prices’ tab […]
This Google Live Updated Cryptocurrency Investment Tracking Spreadsheet can help you track your cryptocurrency investments. It gets the prices from an external API and keeps them updated. It supports the 15 most popular cryptocurrencies. It uses Poloniex and Cryptocompare APIs to retrieve latest currency’s rates: It uses a script based on FastFedora Project which can […]