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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.
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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.
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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.