CoinFabrik Blog - Secure Cryptocurrency Applications Development

Decentralized Blockchain Bridges, Blockchain Innovations, and Cryptoasset Investment Frameworks

August 1, 2018August 2, 2018 Sebastian WainNo Comments

Reading Time: 1

At CoinFabrik we are organizing internal presentations in response to interesting work we are doing. As we have grown, scheduling time to share our projects and ideas has become essential. Recent presentations have included: Decentralized Blockchain Bridges Last year Oscar Guindzberg, TrueBit, and CoinFabrik partnered to create a decentralized trustless bridge between Dogecoin and Ethereum […]

Analyzing Blockchain Networks with Metcalfe’s and Odlyzko’s laws

August 1, 2018 Federico CacciaNo Comments

Reading Time: 3 minutes

This article aims to extend the analysis of Bitcoin using Metcalfe’s Law performed by Cryptolab Capital on this article. Here, we are going to summarize some ideas and apply them to other major networks. We are going to update the analysis with Bitcoin to review some points and then, we are going to extend the […]

A Review On Cryptoasset Valuation Frameworks

July 18, 2018July 19, 2018 Federico CacciaNo Comments

Reading Time: 16 minutes

Some people think that cryptoassets are bubbles without intrinsic value and this is mostly due to the fact that they don’t know how to analyze them. Cryptoassets can’t be analyzed with the same valuation frameworks used in stocks and other non-cryptoassets. However, the crypto-community has been pushing up some useful valuation models. In this article we […]

Comparison of PoS projects: Unbiased Leader Election

July 18, 2018 Hartwig MayerNo Comments

Reading Time: 7 minutes

Introduction Prior to the Bitcoin blockchain of “Satoshi Nakamoto”, distributed ledger systems were lacking two important properties which are essential for a decentralized digital cash system. The first property which existing distributed ledger systems were missing, was the ability to scale to a network of millions of users. And secondly, systems at the time were […]

Inlock Token Sale Audit Report

July 13, 2018July 13, 2018 Ariel YaboNo Comments

Reading Time: 6 minutes

Introduction Coinfabrik has been hired to audit the INLOCK token sale smart contracts. We started this audit report writing a summary of the smart contracts provided by the client and a list of the analysis methods used to audit the contracts. Next, we detailed our findings ordering the issues by severity, followed by all the observations we […]

Bricks4US Token Smart Contract Security Audit

July 11, 2018July 11, 2018 Ariel YaboNo Comments

Reading Time: 3 minutes

Introduction Coinfabrik was asked to audit the contracts for the Bricks4Us token sale. Firstly, we will provide a summary of our discoveries and secondly, we will show the details of our findings. Summary The contracts audited are from the bricks4us-smart-contracts repository at https://github.com/Bricks4us/bricks4us-smart-contracts. The audit is based on the commit 535cf8c62a4cd11625e28a357ab5013f4b4c5c54 of branch master. It […]

Zeex Token Auditing Report

July 5, 2018July 19, 2018 Ariel YaboNo Comments

Reading Time: 3 minutes

Introduction Coinfabrik was asked to audit the contracts for the Zeex Token sale. Firstly, we will provide a summary of our discoveries and secondly, we will show the details of our findings. Summary The Zeex Token is both ERC20 and ERC827 compatible. The Zeex Crowdsale has a pre-sale period where additional bonus locked tokens are […]

Smart Contract Audits: The Ultimate Security Guide

June 25, 2018August 6, 2018 Ariel YaboNo Comments

Reading Time: 11 minutes

Smart contract security is a serious problem today. Security flaws, misbehavior, and inefficiency are very expensive when you deploy a Smart Contract to the Blockchain. Companies are especially concerned about their Smart Contract code because once it is run, there is no turning back (they are irreversible) and money can be stuck in the blockchain and lost forever. Thus, to make sure their code is written correctly, these enterprises usually hire well known external auditors (like Coinfabrik) because they know that a problem in their code could cost a lot more money if they skip the audit. Since Smart contracts are used to move, store, distribute funds, errors in smart contract code and design must be minimized. Furthermore, since the appearance of the ICOs in the past few years and with their boom in 2017 and 2018, the smart contract security audits have become one of the most ordered services in the blockchain industry.

Stasis Token Smart Contract Audit

June 25, 2018June 27, 2018 Matias BardelliNo Comments

Reading Time: 2 minutes

Coinfabrik has been hired to audit the smart contracts for Stasis sale, the Stable Euro Token.
Firstly, we wrote a brief summary with our discoveries. After that, we addressed the detailed findings and what are the enhancements we propose to improve the code. And at the end, we wrote the conclusion with the most important issues to correct if there were any, and how we considered the code after being analyzed by our team.

Casper CST Token Sale Security Audit

June 21, 2018June 27, 2018 Ariel YaboNo Comments

Reading Time: 3 minutes

Coinfabrik has been hired to audit the contracts for the Casper Token sale. Firstly, we will provide a summary of our discoveries and secondly, we will show the details of our findings. Summary The contracts audited are from the presale repository at https://github.com/Casper-dev/presale. The audit is based on the commit 3c66514423277c39bea26e62a7de47d51d712108 from branch feat/presale. This […]

What I Have Learned From My Arbitrage Experiences with Cryptoassets

June 19, 2018June 18, 2018 Federico CacciaNo Comments

Reading Time: 9 minutes

Lately, lots of posts have been talking about how traders get rich from arbitrage opportunities in the crypto market. I have been trying to do arbitrage for months, but I could never obtain a profitable strategy. Therefore, I will tell you here the problems I found while attempting to do it. This might be helpful […]

DreamTeam Token Audit

June 12, 2018June 27, 2018 Matias BardelliNo Comments

Reading Time: 4 minutes

CoinFabrik was asked to audit the contract for the DreamTeam token and token sale (previously audited). Firstly, we will provide a summary of our discoveries and secondly, we will show the details of our findings. Summary The contract audited is in the DreamTeam repository at https://github.com/dreamteam-gg/smart-contracts. The audit is based on the commit 616ed2538526001d25b75680e4d3bd8f3c4deac2, and […]