TOSC Smart Contract Audit
Reading Time: 5 minutes
CoinFabrik was asked to audit the contracts for the TOSC project. Firstly, we will provide a summary of our discoveries and secondly, we will show the details of our findings.
Tag: ethereum
Market Making in Crypto Exchanges: An Introduction
Reading Time: 4 minutes
Market makers at stock exchanges are companies or individuals who stand ready to buy and sell securities. Similarly, market makers at crypto exchanges sell and buy crypto assets on a continuous basis at a publicly quoted price. Since everbody can place an order at crypto exchanges, like e.g. Binance or BitMEX, and order execution is […]
HEX Financial Audit
Reading Time: 11 minutes
HEX is an ERC-20 token and fully-automated contract deployed on the Ethereum network used to recreate a traditional banking product called “Time Deposit”.
How to Store Text in Ethereum
Reading Time: < 1
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.
Dockerized Ethereum Private Testing Environment Compatible with MetaMask and Remix
Reading Time: 2 minutes
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.
Using the CardContact SmartCard USB HSM in an Ethereum PoA Chain
Reading Time: 4 minutes
After testing the performance of Ethereum using PoA, we tested the usability of the CardContact SmartCard-HSM USB token on an ethereum Proof of Authority network. The HSM allows to store and use multiple encryption keys, both RSA and Elliptic Curves (including secp256k1), for applications like issuing certificates as a CA, and with any application that […]
On Ethereum Performance Evaluation Using PoA
Reading Time: 6 minutes
Lately, there has been a lot of talk about permissioned blockchains, in which only certain entities have the authority to validate transactions and generate blocks. The use of these technologies is currently highly required by different companies, since it allows them to store data in a decentralized way and show complete transparency in all their […]
Auditing Solidity Code with Slither
Reading Time: 2 minutes
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 […]
Smart Contract Auditing: Human vs. Machine
Reading Time: 4 minutes
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 […]
An Efficient Algorithm to Exploit Arbitrage Opportunities in Crypto Markets
Reading Time: 3 minutes
The crypto market is still inefficient. Cryptoassets have different rates on different exchanges. The big question is how we can profit from that inefficiency. One approach is making transactions between exchanges, but if we buy a cryptoasset on one exchange, by the time we can sell it on another, the price difference may no longer […]
A Summary of Satis Group’s Latest Cryptoasset Valuation Report
Reading Time: 3 minutes
In this article we review the main ideas presented in the last cryptoassets valuation Satis Group’s article published by Bloomberg. Satis Group is an ICO advisory firm which has helped model one of the first bitcoin valuation in 2014. According to their report, the cryptoassets ecosystem forecast is promising. Bitcoin and Monero cryptocurrencies are both expected […]
Dogethereum: A Decentralized Blockchain Bridge Between Dogecoin and Ethereum is Born
Reading Time: 2 minutes
The second stage of the Dogethereum bridge was presented on September 5, 2018 at 10 am (PT) and live streamed. The bridge uses “superblocks” to move coins from Dogecoin to Ethereum and collateralization to move coins from Ethereum to Dogecoin. We are excited because this innovation can also be used to bridge other blockchain pairs. […]