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After months of anticipation, Cryptex announced the launch of TCAP, The World’s First Total Cryptocurrency Market Cap Token. Real-time price exposure to the entire Cryptocurrency sector in a single solution. The entire market. Yours at the push of a button. TCAP is not a fixed basket of tokens. TCAP is not an ICO, nor a rebased elastic. TCAP is a new, 250% fully backed, fully collateralized asset that’s both audited and accurately representative of the entire cryptocurrency complex by total market capitalization. Our team has been hard at work on this concept for the past 14 months. Today, we’re proud to say our vision is now a reality. TCAP is currently live on Rinkeby testnet powered by decentralized Chainlink oracles that provide real-time total market cap crypto data aggregated from many of the most reputable crypto data providers in the world, bringing reliable, tamperproof data on-chain to our TCAP smart contract. How Does TCAP Work? As of this writing, the total crypto market cap currently resides at 650 billion dollars. Our smart contracts call the exact total market cap from Chainlink’s price reference contract, and then add a divisor to that number, just like the S&P 500 or any major financial index would. The price calculation for TCAP is as follows: = $650,000,000,000 c = 10,000,000,000 d = = $65.00 r c Where is the total cryptocurrency market cap, is the divisor and is the TCAP token price. c d r TCAPs are then minted upon being collateralized by an underlying asset, such as ETH, WBTC, or DAI. What the user receives in return is a newly minted asset represented by a token that moves in real-time to the penny of the underlying total market cap metric our smart contract is tracking. Each TCAP is algorithmically collateralized by a corresponding amount of ETH, WBTC, or DAI needed to appropriately back each token by 250%, thus creating price exposure to the entire cryptocurrency sector with the single push of a button. Understanding Cryptex Cryptex is laser-focused on building innovative, open-source financial products for the global Crypto community. Using Ethereum’s smart contract system, Cryptex is able to build decentralized financial instruments such as Total Market Cap Token and many more others soon to come. Pairing real-world data supplied on the Ethereum blockchain alongside collateralized backings for generating innovative new tokens, we’re introducing DeFi products that were previously not possible without a centralized custodian or manager. Now, Cryptex is providing the framework for decentralized financial products that offer exposure to more than just BTC, ETH, and other DeFi tokens. Why Chainlink Oracles? Chainlink has established itself as the industry standard decentralized oracle solution, becoming the most widely used and fastest-growing price oracles within the DeFi ecosystem, currently securing 4B+ in value. Chainlink’s Price Feed framework employs decentralization at both the oracles and data source levels to ensure no single point of failure in data delivery and sourcing. Chainlink’s decentralized oracles source price data from premium off-chain data aggregators and broadcast it on-chain using a network of independent, Sybil resistant node operators run by leading blockchain DevOps and security teams. Through this framework, TCAP smart contracts can obtain highly available, accurate, tamperproof market cap data to ensure fair pricing for TCAP. Preston Van Loon, Co-Founder and Blockchain Lead for Cryptex and Co-Founder of Prysmatic Labs says “TCAP is an exciting new asset that demands precise data on-chain. Chainlink enables Cryptex to aggregate multiple data points from external sources within the smart contract framework on Ethereum. Using a trust minimized oracle framework allows TCAP to minimize the trust of Cryptex and ultimately enables us to create better trustless financial products.” Joe Sticco, Co-Founder and CEO of Cryptex says “The beauty of working with Chainlink is they provide us with decentralized total crypto market cap data, which via the TCAP smart contract, we can then algorithmically match up on chain to cross-asset collateral for creating not only our initial TCAP token but a forthcoming lineup of fully decentralized data-backed financial tokens for the entire ecosystem.” Experience TCAP on Testnet Join over 500 people that have already committed to experiencing TCAP on testnet by following the steps in . this post Follow Cryptex You can keep up with Cryptex on , , and . You can access the technical documentation, whitepaper, and Quantstamp audit by visiting the . Twitter Reddit Discord Cryptex website Follow the Chainlink Network Chainlink is trusted to deliver definitive truth by hundreds of organizations to provide continuous, reliable data feeds. To learn more, visit and follow on Twitter. chain.link @chainlink | | | | | | | | | Website Twitter Discord Reddit YouTube Telegram Events GitHub Price Feeds DeFi Also published at https://medium.com/cryptexfinance/cryptex-selects-chainlink-to-power-its-flagship-token-tcap-71461e73579f

Chainlink is Set to Power Cryptex's Flagship Token, TCAP

This paper is available on arxiv under CC 4.0 license.
Authors:
(1) Ghazaleh H. Torbati, Max Planck Institute for Informatics Saarbrucken, Germany & ghazaleh@mpi-inf.mpg.de;
(2) Andrew Yates, University of Amsterdam Amsterdam, Netherlands & a.c.yates@uva.nl;
(3) Anna Tigunova, Max Planck Institute for Informatics Saarbrucken, Germany & tigunova@mpi-inf.mpg.de;
(4) Gerhard Weikum, Max Planck Institute for Informatics Saarbrucken, Germany & weikum@mpi-inf.mpg.de. Table of Links Abstract and Introduction
Related Work
Methodology
Experimental Design
Experimental Results
Conclusion
Ethics Statement and References V. EXPERIMENTAL RESULTS A. Comparison of CUP against Baselines • LLM-Rec also performs poorly. Solely relying on the LLM’s latent knowledge about books is not sufficient when coping with long-tail items that appear sparsely in the LLM’s training data. Popularity and position bias [31] further aggravate this adverse effect. Thus, to address RQ1 (see Section I-B), merely and fully resorting to LLMs alone is not a viable solution. We also ran extended CUP configurations where precomputed CF vectors were incorporated (see Section III-B). These achieved only very minor gains in some of the settings, and there was even a detrimental effect on some cases. We omit these hybrid methods here. We will revisit them in Subsection V-C for sensitivity studies on data density. Another observation is that the weighted training almost always improves performance. Therefore, the following subsections focus on results with weighted training samples. B. Comparison of CUP Configurations • On the GR-1K-rich data, the overall performance is higher than for AM across all configurations. This can be attributed to the fact that GR has longer reviews, and these texts tend to be more informative than the ones in the AM data (which sometimes refer to packaging, shipment and other non-content aspects). C. Influence of Interaction Density The slices AM-1K-rich and GR-1K-rich are constructed with a text-centric stress-test in mind. Both are extremely sparse in terms of user-item interactions. To study the influence of sparseness in isolation, we created two larger samples of both datasets, one still sparse by design and the other denser in terms of users sharing items. We refer to these as AM-10Ksparse and AM-10K-dense, and analogously for GR. All these samples cover 10K users: 10x more users than our previous text-rich slices, to allow more potential for learning from interactions. Table I in Section IV-B shows statistics. The datasets are constructed as follows. To ensure connectivity in the interaction graphs, we first select 500 users and sample 2000 books connected to these users, both uniformly at random. This is the seed for constructing two variants of data, based on the cumulative item degrees of users, that is, the sum of the #users per book for all books that the user has in her collection: • 10K-dense: We randomly select 10K (minus the initial 500) users from all users in proportion to the users’ cumulative item degrees. This favors users with many or popular books. • 10K-sparse: We select users inversely proportional to their cumulative item degrees, thus favoring sparse users. In this sensitivity study, we focus on comparing CF (based on matrix factorization) against our default CUPtext configuration (with idf-selected sentences) and the hybrid combination CUPtext +CF. Tables V and VI show the results for the AM10K data and GR-10K data, comparing the sparse vs. the dense variants with search-based evaluation (corresponding results with standard evaluation are on the project web page). Key insights are: • As the 10K-sparse data is already much denser than the stress-test 1K-rich slices, CF can achieve decent results on the sparse data. Especially in search-based mode, CF is almost on par with CUP. Note that these gains come from the seen items alone, as CF is bound to fail on unseen items. • CUPtext is still the clear winner on the sparse variant. The hybrid configuration, with text and CF vectors combined, is inferior to learning from text alone. • For the 10K-dense data, CF alone performs well, as this is the traditional regime for which CF has been invented. An interesting point arises for the search-based mode and with dense data. Here, the negative test points are closer to the positive sample (after the BM25 search), and pose higher difficulty for text cues alone to discriminate them. Thus, CF becomes more competitive. On GR, hybrid CUP+CF performs best. D. Efficiency of CUP Two architectural choices make CUP efficient: • input length restricted to 128 tokens, and • fine-tuning only the last layer of BERT and the FFN layers. For more analysis, we measured the training time and resulting NDCG on the GR-1K-rich data, comparing different input size budgets and choices of which parameters are tuned and which ones are kept frozen. Figure 2 shows the results. We observe that the 128-token configuration has the lowest training cost: significantly less time per epoch than the other variants and fast convergence (reaching its best NDCG already after 15 epochs in ca. 3000 seconds). The 256- and 512-token models eventually reach higher NDCG, but only by a small margin and after much longer training time. This confirms that concise user profiles, with a small token budget, are the best approach in terms of benefit/cost ratio. As for configurations with more or less tunable parameters, we observe that the variant with frozen BERT takes much longer to converge and is inferior to the preferred CUP method even after more than 50 epochs. The other extreme, allowing all of BERT parameters to be altered together with the FFN parameters, performs best after enough training epochs, better than the CUP configuration that tunes only the last BERT layer. However, it takes almost twice as much time per epoch. So again, from the benefit/cost perspective, our design choice hits a sweet spot in the spectrum of model configurations. This paper is available on arxiv under CC 4.0 license. Authors: (1) Ghazaleh H. Torbati, Max Planck Institute for Informatics Saarbrucken, Germany & ghazaleh@mpi-inf.mpg.de; (2) Andrew Yates, University of Amsterdam Amsterdam, Netherlands & a.c.yates@uva.nl; (3) Anna Tigunova, Max Planck Institute for Informatics Saarbrucken, Germany & tigunova@mpi-inf.mpg.de; (4) Gerhard Weikum, Max Planck Institute for Informatics Saarbrucken, Germany & weikum@mpi-inf.mpg.de. This paper is available on arxiv under CC 4.0 license. Authors: (1) Ghazaleh H. Torbati, Max Planck Institute for Informatics Saarbrucken, Germany & ghazaleh@mpi-inf.mpg.de; (2) Andrew Yates, University of Amsterdam Amsterdam, Netherlands & a.c.yates@uva.nl; (3) Anna Tigunova, Max Planck Institute for Informatics Saarbrucken, Germany & tigunova@mpi-inf.mpg.de; (4) Gerhard Weikum, Max Planck Institute for Informatics Saarbrucken, Germany & weikum@mpi-inf.mpg.de. Table of Links Abstract and Introduction Related Work Methodology Experimental Design Experimental Results Conclusion Ethics Statement and References Abstract and Introduction Abstract and Introduction Related Work Related Work Methodology Methodology Experimental Design Experimental Design Experimental Results Experimental Results Conclusion Conclusion Ethics Statement and References Ethics Statement and References V. EXPERIMENTAL RESULTS A. Comparison of CUP against Baselines A. Comparison of CUP against Baselines • LLM-Rec also performs poorly. Solely relying on the LLM’s latent knowledge about books is not sufficient when coping with long-tail items that appear sparsely in the LLM’s training data. Popularity and position bias [31] further aggravate this adverse effect. Thus, to address RQ1 (see Section I-B), merely and fully resorting to LLMs alone is not a viable solution. We also ran extended CUP configurations where precomputed CF vectors were incorporated (see Section III-B). These achieved only very minor gains in some of the settings, and there was even a detrimental effect on some cases. We omit these hybrid methods here. We will revisit them in Subsection V-C for sensitivity studies on data density. Another observation is that the weighted training almost always improves performance. Therefore, the following subsections focus on results with weighted training samples. B. Comparison of CUP Configurations • On the GR-1K-rich data, the overall performance is higher than for AM across all configurations. This can be attributed to the fact that GR has longer reviews, and these texts tend to be more informative than the ones in the AM data (which sometimes refer to packaging, shipment and other non-content aspects). C. Influence of Interaction Density C. Influence of Interaction Density The slices AM-1K-rich and GR-1K-rich are constructed with a text-centric stress-test in mind. Both are extremely sparse in terms of user-item interactions. To study the influence of sparseness in isolation, we created two larger samples of both datasets, one still sparse by design and the other denser in terms of users sharing items. We refer to these as AM-10Ksparse and AM-10K-dense, and analogously for GR. All these samples cover 10K users: 10x more users than our previous text-rich slices, to allow more potential for learning from interactions. Table I in Section IV-B shows statistics. The datasets are constructed as follows. To ensure connectivity in the interaction graphs, we first select 500 users and sample 2000 books connected to these users, both uniformly at random. This is the seed for constructing two variants of data, based on the cumulative item degrees of users, that is, the sum of the #users per book for all books that the user has in her collection: • 10K-dense: We randomly select 10K (minus the initial 500) users from all users in proportion to the users’ cumulative item degrees. This favors users with many or popular books. • 10K-sparse: We select users inversely proportional to their cumulative item degrees, thus favoring sparse users. In this sensitivity study, we focus on comparing CF (based on matrix factorization) against our default CUPtext configuration (with idf-selected sentences) and the hybrid combination CUPtext +CF. Tables V and VI show the results for the AM10K data and GR-10K data, comparing the sparse vs. the dense variants with search-based evaluation (corresponding results with standard evaluation are on the project web page). Key insights are: • As the 10K-sparse data is already much denser than the stress-test 1K-rich slices, CF can achieve decent results on the sparse data. Especially in search-based mode, CF is almost on par with CUP. Note that these gains come from the seen items alone, as CF is bound to fail on unseen items. • CUPtext is still the clear winner on the sparse variant. The hybrid configuration, with text and CF vectors combined, is inferior to learning from text alone. • For the 10K-dense data, CF alone performs well, as this is the traditional regime for which CF has been invented. An interesting point arises for the search-based mode and with dense data. Here, the negative test points are closer to the positive sample (after the BM25 search), and pose higher difficulty for text cues alone to discriminate them. Thus, CF becomes more competitive. On GR, hybrid CUP+CF performs best. D. Efficiency of CUP D. Efficiency of CUP Two architectural choices make CUP efficient: • input length restricted to 128 tokens, and • fine-tuning only the last layer of BERT and the FFN layers. For more analysis, we measured the training time and resulting NDCG on the GR-1K-rich data, comparing different input size budgets and choices of which parameters are tuned and which ones are kept frozen. Figure 2 shows the results. We observe that the 128-token configuration has the lowest training cost: significantly less time per epoch than the other variants and fast convergence (reaching its best NDCG already after 15 epochs in ca. 3000 seconds). The 256- and 512-token models eventually reach higher NDCG, but only by a small margin and after much longer training time. This confirms that concise user profiles, with a small token budget, are the best approach in terms of benefit/cost ratio. As for configurations with more or less tunable parameters, we observe that the variant with frozen BERT takes much longer to converge and is inferior to the preferred CUP method even after more than 50 epochs. The other extreme, allowing all of BERT parameters to be altered together with the FFN parameters, performs best after enough training epochs, better than the CUP configuration that tunes only the last BERT layer. However, it takes almost twice as much time per epoch. So again, from the benefit/cost perspective, our design choice hits a sweet spot in the spectrum of model configurations.

Recommendations by Concise User Profiles from Review Text: Experimental Results

Location, Location, Location! PostGIS and Heroku Postgres

অবস্থান, অবস্থান, অবস্থান! পোস্টজিআইএস এবং হেরোকু পোস্টগ্রেস

Lage, Lage, Lage! PostGIS und Heroku Postgres

¡Ubicación, ubicación, ubicación! PostGIS y Heroku Postgres

Emplacement, emplacement, emplacement ! PostGIS et Heroku Postgres

स्थान, स्थान, स्थान! PostGIS और Heroku Postgres

場所、場所、場所！PostGIS と Heroku Postgres

위치, 위치, 위치! PostGIS와 Heroku Postgres

Localização, localização, localização! PostGIS e Heroku Postgres

Местоположение, Расположение, Местоположение! PostGIS и Heroku Postgres

Konum, Konum, Konum! PostGIS ve Heroku Postgres

Vị trí, vị trí, vị trí! PostGIS và Heroku Postgres

位置，位置，位置！PostGIS 和 Heroku Postgres

Humans! One interesting twinkle in the dark, vacuous expanse of the cosmos. Trapped on a floating ball of rock to mope into space and be tormented by relentless, conflicting emotions. Prison within and prison without. Awaiting the summon of death. What the hell is this existence and what is its use? At least we have each other. Right? Yes, we do. Plus, the resources of the earth. And most importantly, there's that small voice that keeps telling us to become more. So, we stagger on. Nothing is certain in this great maze of existence but we don't just give in. We grope for purpose in the confusing unknown. We do what we do in search of fulfillment. Thus, we solve problems for those we love. We really dig in and harvest ingenious creations from within us. It makes us happy, so we keep going. We keep chasing that which our heart yearns for. What is it many have asked? What is it that we really want? Some of the smartest among us have given a name to it, and I dare agree with them. It is what it is; Freedom! Freedom from wants, death, and ourselves. Freedom from whatever dares limit us. Freedom from this great bondage that is us. Hence, in our relentless yearning, we build this great bridge of science. Into matter, into space, into life. Into technology! Oh that we may find that which we seek. Oh that we may find; Autonomy! Autonomy Has Always Driven Technology Humans have always been bound by limitations that we constantly rebel against. Imagine the caveman days. Small, slow, and weak as we were, we were completely bound by the harsh laws of the jungle. Dominated by powerful creatures. Yet, our big brain brought us to the very top of the food chain. Inventions like the spear, knife, and arrow with advanced hunting strategies helped us overcome the powerful beasts that ruled the wild. Then, we created our own societies and were ruled by tribal laws. Not very different jungle laws though but strong humans were in charge now. Then came the reign of religion, and priests were in charge. Then came countries with cunning politicians. Then came capitalism with wealthy businessmen who are now running the show. All these changes have been driven by advancements as humans try to take more control of their lives. From being ruled by wild beasts to strong men to priests to politicians and businessmen, people have always invented systems that gave them more control of their lives. And this progress is not only evident in the technology of our leadership but also in the everyday devices that we use. First, we had caves and stone tools, then came villages and metal tools, and then came towns and analog machines. Now, we have cities and digital technology. This drive for autonomy in our technology has culminated in what we call a decentralized internet or web3. Autonomy in Web3 Web 3 remains a relatively recent technology that is yet to be widely understood. Yet, it is already being widely adopted as the advantages are very obvious. Simply put, web3 aims to put the Internet and financial system under the control of everyone and not just a few giant corporations. Why is this necessary you may ask? Well, the answer is simple: "Power corrupts and absolute power corrupts absolutely!" The internet and financial systems represent the most critical technologies that humans have been able to develop. Hence, there is a great power in the hands of anyone who controls them. It's no wonder that top government officials and tech billionaires dominate the list of most powerful people in the world. This great power which allows such people to exercise control around the world is akin to the legendary absolute power that absolutely corrupts the wielders. And we have already seen this corruption at play. For example; , , , etc. Facebook has recorded multiple user data breaches Twitter has been accused many times of stifling free speech US politicians were caught cheating through insider trading in the stock market Hence, the internet and financial market which have lasting effects on people’s lives need some level of democracy. This is what web3 promises. Cryptocurrencies were introduced as a means for people to transact directly without passing through middlemen in the banking institutions who often benefit fraudulently from people’s money with little or no punishment. Combining crypto with blockchain technology provides the world with a global decentralized financial internet that no one fully controls and everyone can benefit from. Is Autonomy Truly Possible? Many reservations have been raised about the practicality of web3 and whether it can be truly autonomous. For example; fundamental blockchain infrastructures are often hosted on web2 servers with centralized control. Also, mining cryptocurrency is energy intensive which makes the entire system dependent on power companies. Would the power companies and server owners not be the new bosses in town? Well, that's a critical problem that is yet to be solved. However, blockchain technology is slowly solving the centralized server problem through compressed distributed storage of the technology on the devices of its users. Basically, a blockchain is a database, and every device that connects to the blockchain has a version of the database stored on it. This makes it possible for the billions of devices that users use to connect to the blockchain to function as servers distributed around the world instead of just one central server. Fingers crossed for what will come in the future. About the electricity problem, well, most cryptocurrencies have a limited amount of tokens to be mined, hence, mining is not a forever thing. Also, alternative versions of power like solar make it possible for miners to set up affordable sources of personalized power. Hence, centralized power companies can possibly be bypassed. With these considerations, the autonomy that web3 promises can foreseeably be accomplished. Future of Autonomy Picture this... You fall asleep now and awaken in the autonomous age. Robots run the world now. The planet is one big country run by the United Nations and headquartered in Earth City (a giant circular artificial island built in the Atlantic Ocean on longitude 0 degrees and latitude 0 degrees). Networks of underwater hyperloop lines and speed train bridges interconnect all the continents in minutes and the former countries are nothing but political provinces for proper documentation and security. Autonomous vehicles with little or no accidents dominate the roads and autonomous spaceships transverse space to transport people and resources around the solar system. Humans have finally colonized the solar system. The world lives in abundance as automated high-tech farms meet all our agricultural needs. Basic amenities like water, electricity, and education are free, and everyone gets a living wage to cover secondary needs like real estate around the planets, internet access, and transportation. Advanced amenities like technology, art, entertainment, exploration, and financial trading are where businesses operate. Web3 is fully operational. Hologram devices are all over the place for people to experience the dinterverse (decentralized internet metaverse) which uses all those devices as servers. DAOs, running on open-source technology, are the global means of voting, with Auth ID being the prominent open-source platform for decentralized technology. Industry-based crypto coins are the means of exchange (e.g., techon for technology, agrocoin for agriculture, muse for music, etc.) and cryptex trading (forex trading of the time) is the primary means of employment for everyone with people speculating on which industry will do better based on the season. Bitcoin is, however, immortalized as the only currency accepted around the world across all industries. Global poverty has been eradicated and financial inequality is very low around the world with cryptex trading available to everyone. A decentralized financial system was the game changer as it led to an explosion of prosperity through relatively easy cryptex trading. You investigate your trade on your holophone. You're doing very well and will be making another $50,000 this week. You smile to yourself as you glance out the window of your noiseless starjet (silent speed jets that ferry people around the world in minutes). The city below is a great wonder as people said. You're on vacation in Earth City. It's your first time. You came for it. The statue of autonomy or "the human spirit" as it is fondly called. Many weep upon first beholding its glory. The symbol of human victory on the earth. It appears on the horizon. The shiny bust of a crowned androgynous human child stops at the waist so it's neither male nor female. Completely transparent as if entirely made of glass, hence, the name human spirit. With both hands upraised in freedom, it holds Bitcoin (the first global crypto) in the right hand and a scroll in the left. Your ship does the ceremonial circling of the statue. Then it passes the scroll and you behold those legendary words. You read it in a low voice. "We humans hold that all of us are born free. Free to live, free to love, free to prosper!" A smile crawls up your face, and you resolve to uphold this great motto. Then you hear a phone ring. A familiar ancient music. It gets louder and louder. It's your phone. You were dreaming of course. You curse as you pick up your phone. It's your boss calling you to return to work. You cut the call and sigh in disappointment. That dream was just beautiful. Then it occurs to you: The current world is one big nightmare! WHAT DOES THIS MEAN Web3 is upon us. Cryptocurrencies are everywhere and blockchain infrastructure gets more sophisticated every day. Many crypto millionaires roam the earth to prove the real value of the technology. Decentralization is on its way. Below are the predictions you should know about web3; Decentralization is the future. Digital commodities e.g., NFTs, in-game items, virtual real estate, and decentralized exchange (DEX) will create a new industry. Currencies will become more globalized. Companies will become smaller and more personalized. Self-service will become the new way of operating the financial industry. HOW DO I PREPARE FOR AUTONOMY Educate yourself on cryptocurrencies, blockchain technology, and the metaverse. Invest in promising crypto coins. Participate in public web3 forums. Fund web 3 projects if you can. Learn how to make money on your own from the internet.

Behold: The Autonomy We Always Sought

দেখুন: যে স্বায়ত্তশাসন আমরা সবসময় চেয়েছি

Siehe: Die Autonomie, die wir immer gesucht haben

He aquí: la autonomía que siempre buscamos

Voici : l’autonomie que nous avons toujours recherchée

देखिए: वह स्वायत्तता जो हम हमेशा से चाहते थे

見よ、私たちが常に求めていた自律性

보라: 우리가 항상 추구했던 자율성

Eis: a autonomia que sempre buscamos

Вот: автономия, к которой мы всегда стремились

Bakın: Her Zaman Aradığımız Özerklik

Kìa: Quyền tự chủ mà chúng tôi luôn tìm kiếm

看哪：我们一直寻求的自主权

271 Stories To Learn About Ethereum

295 Stories To Learn About Cryptocurrency

183 Stories To Learn About Crypto Exchange

Top Blockchain Development Companies | March 2022

What is Sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server. It features solid transaction support, relations, eager and lazy loading, read replication and more. Sequelize Installation Sequelize is available via (or ). npm yarn npm install --save sequelize You’ll also have to manually install the driver for your database of choice: # One the following:
$ npm install --save pg pg-hstore # Postgres
$ npm install --save mysql2
$ npm install --save mariadb
$ npm install --save sqlite3
$ npm install --save tedious # Microsoft SQL Server of Setting up Connection To connect to the database, you must create a Sequelize instance. This can be done by either passing the connection parameters separately to the Sequelize constructor or by passing a single connection URI: Sequelize = ( ); sequelize = Sequelize( , , , { : , : }); const require 'sequelize' const new 'database' 'username' 'password' host 'localhost' dialect /* one of 'mysql' | 'mariadb' | 'postgres' | 'mssql' */ If you’re connecting to the database from a single process, you should create only one Sequelize instance. Sequelize will set up a connection pool on initialization. This connection pool can be configured through the constructor’s options parameter (using ), as is shown in the following example: options.pool sequelize = Sequelize( , { pool: { : , : , : , : } const new /* ... */ // ... max 5 min 0 acquire 30000 idle 10000 Modeling Tables User = sequelize.define( , { firstName: { : Sequelize.STRING, : }, : { : Sequelize.STRING }
}, { }); const 'user' // attributes type allowNull false lastName type // allowNull defaults to true // options Internally, calls . sequelize.define Model.init The above code tells Sequelize to expect a table named users in the database with the fields and . The table name is automatically pluralized by default (a library called is used under the hood to do this). This behavior can be stopped for a specific model by using the : true option, or for all models by using the define option from the . firstName lastName inflection freezeTableName Sequelize constructor Sequelize also defines by default the fields id (primary key), and to every model. createdAt updatedAt If you want Sequelize to automatically create the table (or modify it as needed) according to your model definition, you can use the method, as follows: sync User.sync({ : }).then( { User.create({ : , : });
}); // Note: using `force: true` will drop the table if it already exists force true => () // Now the `users` table in the database corresponds to the model definition return firstName 'John' lastName 'Hancock' Querying in Sequelize A few simple queries are shown below: User.findAll().then( { .log( , .stringify(users, , ));
}); User.create({ : , : }).then( { .log( , jane.id);
}); User.destroy({ : { : }
}).then( { .log( );
}); User.update({ : }, { : { : }
}).then( { .log( );
}); // Find all users => users console "All users:" JSON null 4 // Create a new user firstName "Jane" lastName "Doe" => jane console "Jane's auto-generated ID:" // Delete everyone named "Jane" where firstName "Jane" => () console "Done" // Change everyone without a last name to "Doe" lastName "Doe" where lastName null => () console "Done" Datatypes in Sequelize Below are some of the datatypes supported by sequelize. Sequelize.STRING Sequelize.STRING( ) Sequelize.STRING.BINARY Sequelize.TEXT Sequelize.TEXT( ) Sequelize.CITEXT Sequelize.INTEGER Sequelize.BIGINT Sequelize.BIGINT( ) Sequelize.FLOAT Sequelize.FLOAT( ) Sequelize.FLOAT( , ) // VARCHAR(255) 1234 // VARCHAR(1234) // VARCHAR BINARY // TEXT 'tiny' // TINYTEXT // CITEXT      PostgreSQL and SQLite only. // INTEGER // BIGINT 11 // BIGINT(11) // FLOAT 11 // FLOAT(11) 11 10 // FLOAT(11,10) Raw Queries in Sequelize As there are often use cases in which it is just easier to execute raw / already prepared SQL queries, you can use the function sequelize.query. By default the function will return two arguments — a results array, and an object containing metadata (affected rows etc.). Note that since this is a raw query, the metadata (property names etc.) is dialect specific. Some dialects return the metadata “within” the results object (as properties on an array). However, two arguments will always be returned, but for MSSQL and MySQL it will be two references to the same object. sequelize.query( ).then( { }) "UPDATE users SET y = 42 WHERE x = 12" ( ) => [results, metadata] // Results will be an empty array and metadata will contain the number of affected rows. In cases where you don’t need to access the metadata you can pass in a query type to tell sequelize how to format the results. For example, for a simple select query you could do: sequelize.query( ).then( { }) "UPDATE users SET y = 42 WHERE x = 12" ( ) => [results, metadata] // Results will be an empty array and metadata will contain the number of affected rows. Please refer for more details. https://sequelize.org

Use Sequelize ORM with Node JS Project

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The State of the Market: Positive news regarding new partnerships in Saudi Arabia, Japan and the U.S. have pushed XRP up nearly 30% over the past 24-hours. Ripple also announced that its xRapid product could be a part of these new partnerships and may roll out within the next 1 to 2 months. Meanwhile, as Consensus 2018 takes place in Singapore, Binance and UPbit have announced plans to launch new cryptocurrency exchanges in the country which is known for its friendly approach to crypto-startups and exchanges. Currently the cryptocurrency market capitalization stands at $198.5 billion. PNC recently completed a trial phase of Ripple’s xCurrent and now plans to fully integrate the proof-of-concept protocol throughout their entire banking system. The American company will now be able to execute lightning fast cross border payments and is one of the top-10 largest banks in the United States. Ripple hopes to convince the bank to adopt xRapid in the near future and at the moment there are more than 40 clients spread across six different continents that are using Ripple products. ( ) Read More. Dash Text, a wallet service that enables transactions without the need of an internet excess, has launched its beta version in Venezuela. Dash Text, enables transactions of Dash using an SMS message. Lorenzo Rey, the co-founder of Dash Text, has said that his inspiration came from the inadequate access to Internet-enabled phones in Venezuela and Bitcoin Cash’s CoinText. Following the launch, Dash Text is only available to Movistar customers but will be soon rolled out to customers of other telecommunication companies upon its full release. ( ) Read More. CME’s Group managing director, Tim McCourt thinks that Bitcoin futures did not cause a bearish trend in the market. He shared this view with B2C2 CEO, Phillip Gillespie during the Consensus Singapore 2018 conference. McCourt says that Bitcoin futures are a part of the market, and the derivative market has been growing mainly in the Asian markets. Further, McCourt said that they launched Bitcoin futures because of high demand from the participants in the market. ( ) Read More. Subscribe to the Berminal Brief Newsletter Download Berminal for Free The Berminal Website Berminal Official Telegram Berminal Twitter

Ripple continues to Gain as Bitcoin Volume Increases and UPbit and Binance Plan to Launch Exchanges…

Blockchain startup announced the launch of — Litecoin transactions via Telegram bot app. The news swept across all media promising a new era of cryptographic transactions. Everyone was crossposting the of Litecoin founder Charlie Lee. Zulu Republic Lite.im tweet Product overview Zulu Republick is a Switzerland located startup that develops dApps and their own ecosystem built on Ethereum blockchain. Founded in the middle of 2017, not to conduct an ICO and have Airdrops instead. The fact is that they were successful and lucky enough to get private funding without going public. they decided According to Zulu , their new product Lite.im will allow users to make Litecoin transactions via LTC API system. Zulu won’t control private key data, which will be managed by RSA encryption and user’s password. announcement Firstly, Lite.im is available through , that can act upon users’ commands: check current LTC balance, reveal a Litecoin address for receiving funds, and send LTC to email or wallet. Sending via email address is currently available only for registered recipients, and SMS function will be enabled in the next version. Lite.im code is available on . Telegram chat bot Github Technology users Zulu team expects that the new service will be so user-friendly that even people without any crypto knowledge and crypto wallet will handle it easily. The team hopes that the service will help promote cryptocurrency in those countries where the government actively oppose to let the technology spread (to name just a few, India, Saudi Arabia, Morocco, Iraq, Brazil, Republic of the Congo, Pakistan, Bangladesh, Syria, Turkey, and Algeria). If we talk numbers, there are Telegram users monthly (with 100 million app downloads in Google Play), and at least mobile phone users across the globe. This means that the potential audience of the service after the activation of the SMS function will be huge. 200 million 4.5 billion Other ways to send crypto via SMS The idea of sending crypto via SMS with a phone not connected to Internet is not new, there are several solutions on the market already: is a well-known wallet with desktop and mobile versions. The option of sending bitcoins via SMS has been offered for several years already. You will need to use desktop or mobile web version, input recipient mobile phone number and the amount of bitcoins. Blockchain wallet has also been offering SMS option for a while already. You will have to add and verify your mobile phone number to your account and then you’ll be able to send bitcoins via SMS to any other phone. If the receiver’s number is not in Coinapult system, a new account will be automatically created and bitcoins will remain in the Coinapult system. Coinapult sending works with Bitcoin Cash, and the wallet can be set up by texting CoinText access number, then your Bitcoin Cash can be send via SMS to any other number. CoinText Samourai Wallet’s also has the option to send money with SMS. The feature was introduced in January 2018. One uses the app to send a transaction via SMS to any internet-connected Android device. The app will divide your message into several parts that will be connected and put in together in the app on the receiver’s device. PonyDirect Telegram bots for crypto transactions: allows you to buy or sell several types of cryptocurrency via Telegram bot: Bitcoin, Bitcoin Cash, Ethereum, Litecoin, Dash, DOGE. Exchange fees are 0.8% of the transaction amount charged from both sides after the deal is completed. Change bot is a Spanish startup located in Valencia, Spain, that allows you to send and receive cryptocurrency (Bitcoin, Ethereum), buy it with various fiat currencies (euro, dollar, yen, pound, Canadian dollar, Mexican peso, yuan and Swiss franc). It is also possible to withdraw money in more than 10.000 Spanish ATM without bank account or ATM card. Octopocket is still in Beta version now. Octopocket lets you trade your crypto on Kraken exchange via Telegram, it’s an open source Python project available on Github. Telegram kraken bot Conclusion Despite the fact that the idea of ​​sending cryptocurrency via SMS or Telegram is not new, all existing services mostly provided the possibility of major cryptocurrencies transactions (Bitcoin, Ethereum, Bitcoin Cash and several others). Lite.im intends to work with Litecoin only. Obviously, the project has very good media support (Charlie Lee’s helped a lot), which will provide the team with a primary inflow of users. Given the potential for growth (up to 4 billion users), the project has every chance of taking off quickly. tweet We expect that such services will appear for multi-currency and soon any crypto or token can be safely and quickly sent using only mobile communication (SMS) or instant messenger.

Crypto transactions for all: sending Litecoin via Telegram and SMS is here.

Bros, Lambos, and…NGOs? Crypto sometimes gets a bad rap, between its use for illicit internet purchases, its ‘ ’ reputation, and its volatility. A few days ago, however, Coinbase’s co-founder and CEO, Brian Armstrong, announced a call to action for the crypto community to use its resources to do good: he launched a new charity, , with the goal of sending crypto to people in need. bros in Lambos GiveCrypto.org , GiveCrypto will provide direct cash transfers to people in emerging markets using . His mission is to: According to Armstrong cryptocurrency Help people in need by sending money to them directly Advance real-world usage and benefits of cryptocurrency Provide universal access to an open financial system I’ve spent about a decade of my career working on social problems like global poverty, and my first reaction was skepticism. Crypto for good? Crypto was invented to allow peer-to-peer online payments without use of a financial institution (and much of its use, still, is to ). I’ve worked with aid organizations in Africa, SE Asia, and India, and have seen the limitations of illiteracy, lack of electricity, and lack of connectivity that would make a digital currency nearly unusable. In Africa, for example, don’t even have internet access. facilitate illegal activity 65% of people Upon further reflection, however, I realized that crypto may be uniquely positioned to change the way we address global poverty. Here are three ways GiveCrypto could work: 1. Send aid without corruption A Syrian refugee girl sitting on World Food Program aid boxes. (Photo: REUTERS/Muhammad Hamed) Coins could be sent to, and immediately used by, people in crisis situations. (by governments, on-the-ground providers, and even nonprofits) prevents large amounts of aid from reaching end recipients. GiveCrypto could ensure those in the most volatile situations get resources directly, by circumventing the need to send aid dollars to intermediaries and tracking receipt. Corruption Additional infrastructure (a way to send coins to the right people, and a place to cash out coins in exchange for goods) would need to be developed by on the ground organizations, but such programs have already been launched by some aid organizations. For example, in 2017 the supported more than 10,000 Syrian refugees with digital currency vouchers to trade at selected markets in Jordan, successfully transferring $1.4M and eliminating corruption. World Food Program 2. Economic identity and banking In Myanmar is unbanked (Photo: my own, taken while working at a local nonprofit. I’m the only one in this photo with a bank account) 95% of the population Crypto could be used to provide a financial identity to the who are unbanked, most of whom live in developing economies. These 2 billion adults such as fees, distance to banks, lack of unnecessary documentation, and (most commonly) not having enough assets to warrant an account. 40% of adults cite barriers Financial inclusion is important for reducing poverty, by allowing people to manage savings, receive loans, and build credit. Companies like Philippines-based and US-based are using technology to by creating financial alternatives in an efficient, transparent and scalable manner. GiveCrypto could accelerate these efforts, and create a flow of capital to kickstart accounts. Coins BanQu blockchain help the unbanked Still, additional innovation would be needed to (at some point) allow these individuals to transact (most likely, by interacting with a financial institution). Today, the cost of service to bank the world’s poorest is extremely high — so helping these individuals turn crypto into purchases in an affordable way would require further innovation. 3. Saving money (in unstable environments) Many around the world do not have trustworthy financial institutions or secure ways to save. (Photo: Ghana Talks Business) For many people in emerging economies, long term savings are challenging due to high inflation, government , and the risks of assets being seized if money is stored in local financial institutions. Cryptocurrency provides a way to avoid local institutions. In addition, while cryptocurrency may remain volatile, it can offer people in countries with hyperinflation like Venezuela ( ) and South Sudan ( ) an alternative, particularly as more stable currencies like USD are . corruption 5000% in 2017 600% in 2016 challenging to obtain Projects like are trying to create a more stable cryptocurrency to actually give people the opportunity to increase savings through crypto without huge risks. Today, however, not many people want to use crypto as money, so we have to wonder if (in its present form) we should offer such a volatile asset to those in need as a means of wealth creation. stablecoins What would need to happen for crypto to end poverty? The crypto-philanthropic world has been evolving rapidly, but there are a number of missing pieces that would need to be addressed for recipients before Armstrong’s plan can be put into place, including: : Explain crypto and educate users on its practical uses and benefits; for example, through online videos in local languages. Training : Ways to ensure people in emerging countries with limited internet / computing power can access crypto. For example, companies like are developing technology which allows users to send BCH (and soon other tokens like DASH) through a text message, since does not own smartphones or computers. Tools to receive crypto and transact in emerging markets CoinText.io the majority of the world : A hot wallet or cold wallet to safely store assets; for example through Coinbase. Security An optimistic view Crypto has already begun unlocking new opportunities in philanthropy. Charity Coins ( , ) have launched to drive donations, and CryptoKitties just this week launched a charity kitty, , whose auction helps endangered turtles. Blockchain more broadly has to increase transparency in the nonprofit sector. Clean Water Coin CareBit Honu tremendous potential The idea of direct, unconditional cash transfers is good — they have been to be one of the best ways to alleviate poverty. I’m personally a huge supporter of unconditional cash transfers, given its ability to cut out the inefficiencies in traditional philanthropy (which was the topic of my ). I have witnessed first hand how important a small amount of assets can be to lifting families out of poverty. Will GiveCrypto have true impact on such complex social problems? With the right leadership, continued innovation, and iteration, perhaps it can find a path forward. proven in a number of studies TEDx Talk ~ Like the piece? Please share or comment! ~

Three ways cryptocurrency can end poverty

I have recently been playing around and exploring the library and absolutely loving it. I received a creative of a for a companies growth in the USA with Alaska and Hawaii moved below the US core states. D3js data visualisation The albersUsa projection is perfect for this, however the creative required Alaska and Hawaii to be significantly larger in size than the standard albersUsa projection. I researched google to find a solution for increasing the size of states and only came across one suggestion for copy pasting the section in the D3 library that mentions albersUsa and modifying the coordinates. This had me still loading the library through CDN. This solution did not work however so I will explain below how I achieved it. How to increase the size of Alaska and Hawaii Instead of loading the D3 library through CDN you should download the whole library into your project folder and load it locally. If you don’t know how, the D3 O’Reilley book has a great . In the d3.js file search for albersUsa and change what you need. explanation First I changed the .rotate method to align Alaska and Hawaii how I wanted. Then I searched for the .scale function and altered the scale to what matched the creative. The .translate function will allow you to move the states. alaskaPoint .translate will move the state up and down. .clipExtend will widen the box the svg geo coordinates are being displayed on. This is what the end product looks like. You can visit the interactive version . here

Changing D3js albersUsa state size

As steadily increases, businesses need a secure and user-friendly solution to manage digital assets. In this growing market, Cryptnox proposes a new way to let banks, fintech, and financial institutions issue crypto-based cards. crypto adoption Cryptnox's main idea is to bring the simplicity of credit and debit cards to the complex world of cryptocurrencies. The company acts as a technology provider, offering a transparent solution ensuring secure on-chain transactions. Today, we'll review how Cryptnox's CryptoCard Provider solution intends to transform how businesses handle digital assets. hardware wallet What Is Cryptnox? Cryptnox is a Swiss-based company that provides innovative blockchain wallets for consumers and businesses. If you visit their official website, you will see that they mainly offer two solutions for the crypto world: A hardware wallet for consumers A crypto card provider system for businesses In this article, we will focus entirely on the business solution. The product has several features that streamline transactions and provide a secure digital asset storage solution. We will begin with what is probably the most business-friendly feature of all: the Kiosk functionality. This story was distributed as a release by under Program. Learn more about the program . Cryptounfolded HackerNoon’s Business Blogging here The Kiosk Mode The Kiosk Mode is a specialized application feature for seamless on-chain payments. You can easily switch to this mode from the "Settings" under "General." Once in Kiosk Mode, you'll need to set up a receiving address. You'll need to authenticate yourself using your phone's biometric features for added security. Adding or modifying your receiving address with a tap of the "Select an address" button is easy. If you want to use a Cryptnox card address, you select your desired token card and provide a label. In Kiosk Mode, you can use multiple payment addresses for different tokens. Like fiat currency payments, a PIN closes the process, finalizing the payment terminal operation. A Quick Overview of the User's Dashboard With the Cryptnox dashboard, you gain control over your crypto card interactions. You have the freedom to whitelist: Specific blockchains of your preference ERC-20 tokens Trusted recipient addresses Chosen smart contracts. Moreover, the dashboard allows you to enforce daily spending caps on each card. Various safety measures are also in place. For instance, if your card goes missing or gets stolen, you can temporarily disable it and request a replacement. If you’re familiar with how a basic credit/debit card works, then you will see the similarity. How to Set Up a Card Setting up your card is a quick operation. You'll first receive your card, and then you'll need to navigate to the Cryptnox app. Proceed by entering your PIN and PUK codes into the app. Alternatively, simply scan the QR code located on your profile. Use your smartphone to read your card and import it. Your card is active and paired with your phone as soon as you complete this action. Keep in mind that the pairing introduces an additional layer of security. Your biometric credentials stored in your smartphone will help Cryptnox protect your card. At this point, you'll be able to see the screen below, which has a summary of your crypto holdings. Managing Different Tokens When setting up the app, you will see several tokens in your portfolio view. If you click the top-right corner icon, you'll be able to manage several tokens. From the Bitcoin Mainnet to Ethereum, you'll be able to add a large number of different tokens to the app. If the list you see does not satisfy you, this is not an issue. In fact, you may click on the "+" button at the top left corner to add more tokens. Here, you will need a slightly more advanced understanding of the crypto sector. Choose a network among those available, and add the token's contract address, name, symbol, number of decimals, and CoinGecko ID. You can find all this information on the token's official website or through a quick online search. This is all you need to know to add a new token to your portfolio. The team's idea is to keep the process as simple as possible while offering users a wide range of options. Bottom Line - Helping Crypto-Friendly Businesses Securely Thrive Cryptnox provides a platform that merges the convenience of traditional banking with the innovation of the digital currency world. They offer a CryptoCard provider system for businesses, a hardware wallet solution ensuring secure on-chain transactions. The Kiosk Mode offers seamless, secure on-chain payments with the flexibility to use multiple payment addresses for different tokens. The Swiss-based company focuses on delivering innovative blockchain solutions. They offer a dashboard for controlling crypto card interactions, from whitelisting specific blockchains and tokens to setting spending caps. Safety measures can be enforced, including disabling and replacing cards in case of loss or theft. Setting up a card involves: Receiving it by mail. Entering the PIN and PUK codes into the Cryptnox app. Alternatively, you can avoid the PIN/PUK step by simply scanning the QR code on  your dashboard. Pairing the card with your phone adds a new layer of security to your crypto assets. The app provides a summary of crypto holdings and the ability to manage several tokens. Users can add new tokens to their portfolio, requiring a more advanced understanding of the crypto sector. Cryptnox is carving a way for crypto-friendly businesses to thrive securely. It's a solution catering to the needs of businesses in the digital age, prioritizing safety without sacrificing ease of use. The Cryptnox offering is an exciting development in the cryptocurrency space. The team leverages advanced technology to provide practical, user-friendly solutions for businesses navigating the world of digital assets. The team's first card shipments are ongoing, creating excitement in the sector. If you want to learn more or try Cryptnox, visit its and social pages ( , , or ). website Twitter YouTube Linkedin

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