Public blockchains allow insertion of arbitrary data. Even specific-purpose blockchains like Bitcoin already contain a lot of non-financial data. Although this data insertion can be beneficial in some use cases (e.g. proof of existence), it can also cause damage. If a blockchain … | Continue reading
The security of your crypto-assets depends on one piece of information that you must protect: your private key. If your private key is stolen, all your assets can be stolen. If your private key is lost, all your assets are lost. | Continue reading
Any information stored in a blockchain is supposed to be preserved forever, nobody will be able to change it or even less erase it. But is this really true? Is there any chance that governments or private groups with enough money to finance costly attacks might delete information … | Continue reading
Æternity is a promising blockchain platform with great potential for many application scopes. One such great feature is the native support for state channels.In this article we will explore how we built a peer-to-peer browser game to explore this Æternity capability; along examin … | Continue reading
Facebook’s new permissioned blockchain initiative has been received with well-founded criticism, primarily related to concerns over privacy, but the battle that the Libra Association will spark around the world will probably benefit the struggle permissionless blockchains are fac … | Continue reading
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. | Continue reading
If you’ve been following crypto news, you have probably heard the words Polkadot and Substrate. This article aims to introduce you to these groundbreaking technologies. | Continue reading
The Internet of Things requires micropayment. In this article we guide you through the options, blockchain technology can offer. | Continue reading
3 3Shares Contents IntroductionSet upSending EthersStart and stop miningMonitor the NodesConfig MetaMask And Remix Introduction As a member of CoinFabrik, during the last year I dedicated myself to teach about Ethereum for the University of Palermo and given what I saw in my … | Continue reading
1 1ShareAlgoExplorer: 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 co … | Continue reading
1 1ShareAfter 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 secp25 … | Continue reading
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 assump … | Continue reading
Contents IntroductionOuroboros Protocol Overview A “close-up” of some aspects of OuroborosOuroboros Praos / Genesis / CrypsinousReferences Introduction In this blog post, we present a high-level overview of the paper describing the Ouroboros Proof of Stake protocol implem … | Continue reading
1 1ShareIn this article we are benchmarking several auditing tools. The 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. … | Continue reading
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 w … | Continue reading
Prediction markets are a special kind of betting platforms that can be used for multiple purposes ranging from insuring a crop from bad weather to predicting the outcome of an event based on the wisdom of the crowd. Among other popular uses of prediction markets are hedgi … | Continue reading
1 1ShareIn 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 c … | Continue reading
31 3 7SharesThe second stage of the Dogethereum bridge is being 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 be … | Continue reading
12 12SharesAt 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 y … | Continue reading
2 17 19SharesSome 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. Howev … | Continue reading
Smart contract security is a serious problem today. Security flaws, misbehavior, and inefficiency are very expensive when you deploy a Smart Contract. | Continue reading
Lately, lots of posts have been talking about how traders get rich from arbitrage opportunities in the crypto market. I tried 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 … | Continue reading
Contents IntroductionA Basic PrincipleSome Stable Cryptocurrency Approaches and their WeaknessesTetherBitsharesMakerDAO’s DaiCurrent DevelopmentsThe Future Introduction The most important benefit that Bitcoin and Blockchain Technologies have brought to us is a low-entry barrier t … | Continue reading
Motivation In my last article, I’ve shown you how to make a Solidity ERC20 Token for the RSK Mainnet, how to import and use OpenZeppelin libraries and contracts, and how to use Truffle to deploy and interact with our contract. Although we succeeded in our quest and accomplished o … | Continue reading
Introduction In the last article, we have seen how to build an RSK node in our computer, select the proper network for development, configure Truffle to connect and deploy our future contracts, add accounts to our node and obtain funds to use them to pay the gas. You should have … | Continue reading
Motivation These last years there has been a growth in the Smart Contracts development, predominantly in the Ethereum blockchain. Ethereum, being a different type of blockchain than Bitcoin, can execute concise lines of code inside its chain, a job that Bitcoin (especially though … | Continue reading