Token trading project AirSwap discloses “critical vulnerability” in new smart contract

AirSwap, a peer-to-peer token trading network built on Ethereum, has disclosed that it has found a critical vulnerability in its newly released smart …

AirSwap, a peer-to-peer token trading network built on Ethereum, has disclosed that it has found a critical vulnerability in its newly released smart contract. Under certain conditions, the vulnerability would allow an attacker to perform a token swap without requiring a counterparty to sign off on the trade.

According to AirSwap, the vulnerability was only present in its system for less than 24 hours, with ten accounts identified as “at risk.” After identifying the vulnerability, the AirSwap team rolled back its AirSwap Instant product to its original smart contracts. The team also contacted all affected users and “developed exploit code to proactively drain all vulnerable funds in the AirSwap contracts” into a withdrawal contract only accessible to the owner of the drained tokens.

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The Crypto coin GoChain (GO) increased by 5.81% in 24 hours

GoChain (GO) had a good 24 hours as the cryptocurrency jumped $0.000515452 or 5.81% trading at $0.0093812264. According to International …

GoChain (GO) had a good 24 hours as the cryptocurrency jumped $0.000515452 or 5.81% trading at $0.0093812264. According to International Cryptocoin Experts, GoChain (GO) eyes $0.01031934904 target on the road to $0.0190257701977189. GO last traded at Binance exchange. It had high of $0.009793588 and low of $0.0088657744 for September 13-14. The open was $0.0088657744. About 30.56M GO worth $286,712 traded hands.

GoChain (GO) is down -13.30% in the last 30 days from $0.01082 per coin. Its down -59.94% in the last 100 days since when traded at $0.02342 and the annual trend is down. 200 days ago GO traded at $0.01966. GoChain maximum coins available are 1000.00M. GO uses algorithm and proof type. It was started on 16/05/2018.

GoChain is a new smart contract blockchain based on Ethereum. It aims to be a faster, greener and safer alternative with 100x increased performance for dApp and Smart Contract development. GOC is the native value token in the GoChain blockchain.

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Top 5 Smart Contract Technology Platforms in 2019

However, being mainly responsible for money transfers, Stellar is not the best option for developing complex decentralized applications for large …
Cryptocurrency is still the hot trend. The industry enjoyed a great boom in 2017 — then, Bitcoin skyrocketed, and so did almost all altcoins. ICOs also gained immense popularity, collecting more than $7 billion in investments. The trend was expected to continue in 2018, but instead, the cryptocurrency market stabilized at much lower positions.

Although the cryptocurrency market suffers from high volatility, the interest from entrepreneurs and developers is still growing. The reason is not cryptocurrency itself, which is just a means of payment, in essence. The reason is blockchain technology that underpins cryptocurrencies.

One of the most interesting features of blockchain is a smart contract technology. In our article, we will talk about platforms that implement this revolutionary mechanism. Thus, it makes them truly worth our attention in 2019.


Founded in 2014, Stellar is one of the most exciting smart contract platforms in the market. It is a decentralized open-source service for real-time transfers of cryptocurrencies and fiat money.

Large tech companies trust Stellar and implement this protocol in their systems. For example, IBM hopes to solve the problem of cross-border transfers using Stellar. In March, the tech giant announced the launch of World Wire, a global payment system that will connect banks. 6 international banks have already confirmed their willingness to participate in the development of a new stable coin for transaction settlement. The price of a new digital currency shouldn’t fluctuate much.

In addition to such game-changing partnerships, it is also worth noting that Stellar is much simpler and more understandable than its bigger brother Ethereum. However, being mainly responsible for money transfers, Stellar is not the best option for developing complex decentralized applications for large companies, be it a supply chain app, asset control app, etc. Still, you can conduct a simple ICO within the Stellar environment.


Is there anyone who hasn’t heard about Ethereum? Most people are familiar with the project thanks to its native cryptocurrency Ether. Ethereum has been one of the best start-ups of the last decades. And it is, perhaps, the best smart contract platform out there.

Why is it so? Ethereum is a feature-rich blockchain that can host plenty of dApps (e.g. games, exchanges, etc.) and ICOs. One of Ethereum’s main achievements is that it has made the development of smart contracts easier and more agile. The team behind Ethereum has even published a simple set of rules for all developers. The Solidity language created by Ethereum serves to standardize the development process and make smart contracts’ set-up seamless. Such standardization makes the threshold for entering the smart contract development market much lower.

The Ethereum community provides ongoing support to developers and entrepreneurs. The main mission of the company is to refine the understanding of smart contracts, their development, and implementation practices.


CoinMetro is a platform created by well-known cryptocurrency enthusiast Kevin Murcko in 2018. Yes, this is a fairly young project compared to the other examples in our list. The developers’ main task was to build a functional, user-friendly, intuitive platform for instant fiat and digital money exchange. CoinMetro is suitable for both beginners and experienced cryptocurrency players.

The platform considers security as one of its top priorities. Therefore, CoinMetro is looking for ways to get certified and licensed in as many countries as possible. Such a policy means that users will need to fill the KYC (Know Your Customer) full form in order to be able to make deposits and withdrawals.

XCM is CoinMetro’s native token that meets all the standards of ERC-20 set by Ethereum. All operations on the platform are fuelled by this token, including a standard transaction fee of 0.1%.


Here’s Ethereum’s main rival in the smart contract market. Created by Linux at the end of 2015, Hyperledger is an open-source project for decentralized blockchain-based app development.

At the moment, Hyperledger includes 6 frameworks and 8 tools, which allow the platform to cover all possible areas of smart contract development. The platform’s another advantage is that the development process in Hyperledger is carried out using well-known and hugely supported languages ​​such as JavaScript, Go, etc. In order to choose the language that suits you, you just need to use the appropriate tool.

It is worth remembering that Hyperledger is a permissioned network. This means that all its users are confirmed and known because the platform pursues the KYC (Know Your Customer) policy. This was done to satisfy the needs of large companies and businesses. The task was to develop a modern smart contract platform, and at the same time work within the legal framework complying with data protection rules. Large businesses are usually satisfied with such conditions because they require smart contracts to handle logistics and supply chain management which is why safety and reliability are paramount.


Hedera Hashgraph is a somewhat unique case because the platform doesn’t follow a standard (for this segment) proof-of-work logic. Instead, Hedera uses the binding arbitration algorithm. Smart contracts are developed with a number of public keys of the so-called arbitrators, who are able to add new functionality to the contract and fix any issues. However, this isn’t a problem since Hedera Hashgraph is a permissioned platform. The original idea was proposed by Hedera creators — Dr. Leemon Baird and Mance Harman.

The platform users’ privacy and data protection are achieved with the extremely popular asynchronous Byzantine Fault Tolerance consensus. Since the platform isn’t PoW-based, Hedera has small fees compared to other blockchain platforms, and this is also one of the platform’s advantages. Ultimately, Hedera is an interesting and, in a way, unique project. The idea was backed by a strong team of creators and as a result, we have a platform that you should definitely consider in 2019.

The list goes on…

The very essence of blockchain and smart contracts implies perfect conditions for fair competition. Whether it is for an art investment or a healthcare company, a well-developed blockchain project will always receive its portion of attention. The minimum entry threshold, support from a huge community and untapped niches encourage developers to create more platforms and services. Keeping track of each is not an easy task. Don’t be lazy to conduct your own research and carefully study the platform before you start using it.

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On September 12-13 The Blockchain – powered Ethereum Classic (ETC) sheds in value over -0.54%

International Cryptocoin Experts believe that Ethereum Classic (ETC) is … The highest price was $6.38 and lowest of $6.121 for September 12-13.

It was bad day for Ethereum Classic (ETC), as it declined by $-0.0339999999999998 or -0.54%, touching $6.205. International Cryptocoin Experts believe that Ethereum Classic (ETC) is looking for the $6.8255 goal. According to 5 analysts could reach $13.5809335241262. The highest price was $6.38 and lowest of $6.121 for September 12-13. The open was $6.239. It last traded at Coinbase exchange. Aproximately 254,968 ETC worth $1.60 million was traded.

For a month, Ethereum Classic (ETC) tokens went up 11.02% from $5.589 for coin. For 100 days ETC is down -24.05% from $8.17. It traded at $4.37 200 days ago. Ethereum Classic (ETC) has 113.43 million coins mined with the market cap $703.83 million. It has 210.00 million coins in circulation. It was founded on 23/07/2016. The Crypto ETC has PoW proof type and operates under Ethash algorithm.

Ethereum Classic is an attempt at keeping the Ethereum blockchain unaltered by the part of the community that opposed the hard fork and the return of The DAO funds. It started trading on Poloniex and is getting more and more traction.

The Ethereum Classic mission statement is:

“We believe in decentralized, censorship-resistant, permissionless blockchains. We believe in the original vision of Ethereum as a world computer you can’t shut down, running irreversible smart contracts. We believe in a strong separation of concerns, where system forks are only possible in order to correct actual platform bugs, not to bail out failed contracts and special interests. We believe in censorship-resistant platform that can be actually trusted – by anyone.

Our block explorer data: total coins supply, total network hash rate, last block number and total difficulty are freely provided by

In 2017, the Die Hard fork was implemented in ETC, removing the Ethereum difficulty bomb. Currently, there are no plans to move to Proof of Stake like Ethereum, although developers at the IOHK institute are developing a new PoS protocol for Ethereum Classic.

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CryptoKitties’ Developers Lift $11 Million for “Flow” Blockchain

In the meantime, some other blockchains with smart contract capabilities, such are Kadena, EOS and Harmony, have risen up, composed to pick up …

One of the largest music companies in the world, Warner Music announced their partnership with Dapper Labs, the company that stands behind CryptoKitties, all in order to create a new blockchain called Flow.

The music giant that stands behind Ed Sheeran, Cardi B, Bruno Mars, as well as some other prominent celebrities, eventually decided to go on blockchain, joining an $11.2 million investment in above mentioned Dapper Labs.

Just for a reminder, back in 2017, in December, CryptoKitties, the app that lets users combine (or breed, as they call it) unique digital representations of kitties and trade them, almost spoiled Ethereum when they decided to single-handedly do transactions on the public Ethereum blockchain and that exploded literally overnight.

As per Jeff Bronikowski, who is the senior vice president of business development at Warner Music, if the transaction volume issues can be solved, the CryptoKitties technology, that is actually pretty much similar to Bitcoin (but for other digital assets), could be modified to generate distinctive, negotiable products featuring the company’s listing as the one of the best.

What really happened is that Dapper Labs managed to accumulate $11 million in funding for their project, including investment from Warner. The whole round is led by Andreessen Horowitz, including some other major venture firms as are Union Square Ventures, Digital Currency Group, Venrock and Accomplice who also wanted to participate.

Venrock’s employee and famous gamer, David Pakman, commented that Flow is aiming at a specific games use-case:

“Ethereum and pretty much every other Layer 1 smart contracts platform [is] attempting to build scaleable networks for transactions — like payments. Decentralized gaming and things like cryptocollectibles place different scaling requirements on blockchains that sharding fundamentally doesn’t fix. So, Dapper is building Flow to allow decentralized games to scale to tens of millions of users.”

He added that the collectibles industry needs a purpose-built blockchain in the case that major brands like Warner and the NBA decide to participate, and bring their fanbases along for the ride.

Jeff Bronikowski, SVP, Global Digital Business Development and Head of Innovation and Emerging Technology at Warner Music Group said that Warner Music is always searching for new opportunities for artists and has dedicated itself to exploring emerging technologies to enable these.

He added:

“When we met with Dapper Labs, they immediately understood our vision so we sought to solidify the partnership through this strategic investment.”

Dapper Labs really grew out from $12 million venture round they had back in 2018 and that allowed them to spin out from the parent company – Axiom Zen. A little bit later they took in an additional $15 million in VC cash, working with many of the same funds.

The company explained that Flow is especially “designed for composability where one developer can use code from one application in a wholly other one”.

They said:

“Flow empowers developers to safely and easily build on top of each others’ code, creating entirely new products and services at an accelerating pace. This feature of blockchain, known as composability, has the potential to unlock a new approach to software development.”

Ethereum, on the other hand, has been constantly progressing to the point where it meets growing demands for the network capacity. In the meantime, some other blockchains with smart contract capabilities, such are Kadena, EOS and Harmony, have risen up, composed to pick up users in the case where Ethereum might trip over in their mission to become “the world computer.” Flow is also the latest to join that line-up, but the first one that stresses keepsakes.

Also, this round should incorporate a unique construction where backers in the early stages receive equity that can be changed to tokens later for use on the chain (pending, as ever, approval by the Securities and Exchange Commission).

This is a construction that is almost identical to what is known as a convertible note, where there is debt swapped for equity. All being well, Dapper Labs plans to launch Flow in 2020.

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