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Security Audit for Patientory (PTOY) Token ICO

Reading Time: 3 minutes

CoinFabrik smart contract audit‘s team was hired to audit contracts written by TokenMarket for the PTOY Token ICO. The result of this security review is reflected in this document. Audited Files The contracts we audited are hosted at Github repository: MintableToken.sol CrowdsaleToken.sol ReleasableToken.sol UpgradeableToken.sol Commit hash f968cffe1abf4a3d96d6705ec1befd6cfec13ae3. Vulnerabilities Found Short Address Attack The version reviewed […]

portfolio spreadsheet

Live Updated Cryptocurrency Portfolio Tracking Spreadsheet (Update 2)

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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 […]

portfolio spreadsheet

Live Updated Cryptocurrency Investment Tracking Spreadsheet

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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 […]

Fast Smart Contracts Execution in an Ethereum Private Blockchain Development Environment

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We describe a geth source code change which enables faster block mining. We hope this option will be included in Ethereum command lines. Private Ethereum blockchains may be deployed by private entities to use in production or in the software development process. There are different ways of speeding the development environment. Some developers choose an […]

Comparison of Cryptocurrency Developments

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Working for our customers in our blockchain development company we built this spreadsheet which is a work in progress, comments are welcome here, which describes the features of multiple blockchain and sidechain technologies. Views about blockchain technologies range from hype to skepticism. A blockchain is a distributed database and consensus network that can be used to […]

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How to Use Coinkite’s Multi-Signature Wallets with Bitcore (Beginner Friendly Article)

Reading Time: 6 minutes

The Bitcoin community has been talking about multi-signature wallets for years. However, it is still very difficult for end users to use these wallets. Multi-signature wallets should allow copayers to communicate, but there is no standard protocol for seamless communication between copayers. The Bitcoin community should standardize the communication process. We’re going to learn to […]