Basic Attention Token (BAT) is an open-source, decentralized ad exchange platform built on Ethereum platform. Basic Attention Token held an initial coin offering on May 31, 2017 for its eponymous ERC-20 utility token, raising approximately $35M USD at the time in less than 30 seconds. The Basic Attention Token aims to fix digital advertising, which is broken, fraudulent and opaque. Basic Attention Token work by having advertisers pay BAT to website publishers for the attention of users. The BAT token is designed to correctly value and price user attention within the platform. The Basic Attention Token comprises various components, including attention measurement systems, analytics dashboards and machine learning algorithms. Integration of BAT into a given host application involves implementing BAT Ads, a system that matches and displays ads to users based on locally stored data. Ad targeting is performed wholly on-device, removing the need for third-party tracking. BAT is focused on the Brave browser. Brave is an open-source, privacy-centered browser designed to block trackers and malware. It utilizes blockchain technology to anonymously and securely track user attention, which translates into rewards for publishers. A user's attention, meaning his or her focused mental engagement on digital content like advertisements, is logged through Brave. The makers of BAT indicate that the user's private data and tracking information is stored only on the user's device, ensuring that it is anonymous and private. Created back in 2016, the Basic Attention Token has one of the biggest names behind it, that of Brendan Eich, the creator of JavaScript and the legendary co-founder of Mozilla. Other noteworthy team members include Brian Bondy, lead developer and co-founder of Brave and Scott Locklin, senior engineer, and co-founder of Kerf Software.' Basic Attention Token is created by the team that built the Brave browser, an open-source, privacy-focused browser that blocks ads and trackers. The browser measures user attention and rewards publishers for users attention. Use the Brave browser to protect your privacy and support CoinGecko at the same time: https://brave.com/coi600
Cortex is built on a new public chain called Cortex. The chain includes AI algorithms that support smart contracts, which means anyone can use Cortex to add AI to their smart contracts. It also creates an incentive mechanism for collective collaboration, allowing anyone to submit and optimize models in Cortex, while model contributors can also be rewarded. The end result of Cortex, according to the whitepaper, is the creation of “artificial general intelligence”, or AGI, “being born on the Cortex”. Cortex completed a private token sale in February/March 2018 for its CTXC tokens. That funding round was led by Bitmain and FBG Capital, among other well-known investors in the cryptocurrency space. Placing artificial intelligence systems on the blockchain isn’t a straightforward process. However, Cortex will solve this problem by allowing machine learning researchers around the world to upload well-trained corresponding data models to the storage layer of the Cortex public chain. Other users who need these AI models can make inferences using the models, then pay the person who developed those models. At each inference, a full node synchronizes the model and the data from the storage tier to the local site. Making an inference using Cortex’s unique virtual machine, or CVM, will synchronize the results to the whole network and then return the result. Every time a user initiates a transaction on the Cortex, opens a smart contract, or performs an intelligence inference, the user will need to pay a certain number of “Endorphin” tokens. Endorphin is the pricing unit for transactions on Cortex. However, the platform will have two tokens, including Endorphins and Cortex Coins (CTXC). The overall goal of Cortex is to provide state-of-the-art machine learning models on the blockchain where users can infer using smart contracts. Cortex also seeks to create a machine learning platform where users can post tasks on the platform or submit artificial intelligence-based decentralized apps. Cortex’s token sale began with a single private placement round. That round took place from February 7 to March 7, 2018, during which tokens were sold at a price of 1 ETH = 1500 CTXC. In March 2018, the company announced that it had reached its target cap of 40,000 ETH for 60 million CTXC, or 20.01% of the total token distribution. FBG Capital and Bitmain were lead investors during the token sale. CTXC tokens are ERC20 tokens on the Ethereum blockchain. There’s a total supply of 299,792,458 tokens. Of the total supply, 50.03% (150 million) are reserved for Cortex coin miners as a mining reward, 24.95% (74,792,458) are dedicated to the project’s foundation from the genesis block (including 15.01% to the Cortex Lab, 9.01% to project marketing, and 0.93% to challenge bounties), with the remaining 5% going to advisors, academia, and the community from the genesis block. Cortex aims to place advanced artificial intelligence systems on the blockchain. The company recently completed a private investment round during its token sale for CTXC tokens in February/March 2018. The next step is to roll out the Cortex public chain. Key features of the platform include its smart AI contracts and its Cortex Virtual Machine, both of which allow for advanced AI-based smart contract programming.