Ragu nath

Ragu nath


Ethereum Community and ERC20 and Standards its blockchain ecosystem

The Ethereum community is an open, very active and numerous community of Blockchain experts, and it proposes improvements and new ideas to advance the exploitation of the technology to its full potential. This is where the most popular and used token to date comes from: the ERC20 token.

Ethereum Community and ERC20 :

ERC20 tokens are used to represent and manage tokens of the fungible type, that is, tokens that can be exchanged with other tokens of the same type since they share common properties and can be divisible. A fungible token is a currency, in its physical version or digital version. If we pay for a service with a ticket, it does not matter if we use a ten-euro bill that we have in our pocket, or if we use a ticket that we have in our bag, or even if we use ten one-euro coins to pay for that service; its value in this context will be the same. The ERC20 token development service standard also defines a common interface to be able to interact with the Smart Contracts that implement these tokens with a series of optional and mandatory functions.

To understand it better, we will cite a practical example of an internal gamification project developed in atSistemas. This project is aimed at stimulating and rewarding the productivity and collaboration of our colleagues. For this, a token based on the ERC20 standard has been created to use it as an internal currency. Every time one of our colleagues makes a significant contribution to a task, they are rewarded with one of those tokens. This methodology is used, for example, to reward participation in certain internal initiatives on social networks or sporting events. Later, the person can redeem those tokens by exchanging them for prizes.

Standards and initiatives in the Blockchain ecosystem :

In the case of ERC20 tokens, they all have virtually identical representation. These gamification tokens are worth the same among all and are divisible. If I have ten Gamification Tokens, I can split them to exchange for a prize worth two Gamification Tokens, and I will keep the remaining eight.

However, to address cases in which it is necessary to differentiate each generated token, there is the ERC721 standard that focuses on non-fungible tokens. Non-fungible tokens, as we have mentioned before, are those that represent something unique that cannot be substituted or exchanged for another, nor can it be divided. In this way, a painting by Velázquez cannot be replaced by another by Van Gogh, at least not directly. Both are paintings, but in their specific context each will have one value or another, and they cannot be divided into parts.

A very successful use of this type of token is that of representing collectibles. World-renowned examples of the implementation of this type of token are cryptomonsters, cryptopants and cryptokit, among others. This type of token has a particularly promising present and future with regard to video games, given the wide variety of resources or premium artifacts that can be acquired and that are unique (such as axes, swords, etc.). These artifacts they can be bought and sold to other users.

There are also initiatives that focus on making the consumption of Blockchain resources more efficient for the standards mentioned above. For example, the ERC721 standard contemplates that, to create each non-fungible token, it is necessary to create a different contract. If we focus on a video game with thousands of artifacts, this will imply developing an equal number of Smart Contracts. And if we want to buy 20 artifacts we will have to do it separately one by one, resulting in the same number of transactions to be executed on the network, with the consequent cost of Gas per transaction. Not being a scalable option in many aspects, we find the ER1155 initiative that promotes the execution of operations on tokens grouped in blocks, which affects the optimization of gas costs by reducing the number of necessary transactions. Similarly, to alleviate some aspects not covered in the ERC20 token generator standard (that of interchangeable tokens, such as digital money), the ER223 initiative aims to prevent the accidental loss of tokens. In other words, it aims to provide protection mechanisms against possible shipments of tokens to the wrong address or contract. If we send particular tokens to a contract that is not ready to receive these types of tokens, they will be “trapped” in the contract and we will not be able to recover them. To this end, this initiative proposes, among other things, the implementation of a token fullback function to give the possibility that the receiving contract can reject those tokens and execute other actions before they are blocked forever. The ERC223 initiative was born with the purpose of responding to this great problem that in the cryptocurrency market has produced the loss of thousands and thousands of euros in equivalence.

Similarly, the ERC20 development initiative allows data to be included in transactions, which traditionally only transfers value or tokens. In this way, we will be able to chain executions in a single transaction and, for example, we will have the possibility of finalizing a purchase process by validating — if we have enough money — the total of our purchase according to the price of each of the articles.

Conclusions :

The tokens in Blockchain they allow us to represent any asset, good, thing or procedure. One of the most obvious uses is the representation of digital currencies; We can create digital currencies from scratch by assigning them names and giving them the corresponding validity and uses in a specific Blockchain implementation. We can represent access rights and shared resources, for example, storage space, processing power of a computer, etc. We can also represent values ​​with intrinsic value, such as gold, a car, energy, oil, etc. This type of representation will allow us to have complete traceability of the life cycle of this type of goods. We can also represent actions of a legal entity, such as a company or a large corporation

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Buddha Community

Ethereum Community and ERC20 and Standards its blockchain ecosystem
Jack  Shaw

Jack Shaw


A Curated List Of Awesome Ethereum Ressources

A curated list of awesome Ethereum Ressources. Inspired by awesome-go.


Please take a quick gander at the contribution guidelines first. Thanks to all contributors; you rock!

If you see a link or project here that is no longer maintained or is not a good fit, please submit a pull request to improve this file. Thank you!

Basic {#basic}

What is Ethereum? {#what-is-ethereum}

Bitcoin 2.0? a world computer? a smart contracts platform?

Papers {#papers}

If you feel like going to the source

Roadmap {#roadmap}

  • Timeline - Expected timeline - Post from Mars 2015.
    • Olympic - 0: Olympic.
    • Frontier - 1: Frontier.
    • Homestead - 2: Homestead <----- HERE WE ARE.
    • Metropolis - 3: Metropolis - "when we finally officially release a relatively full-featured user interface for non-technical users of Ethereum"
    • Serenity - 4: Serenity - Switching the network from Proof of Work to Proof of Stake ( Casper). end of 2016?.

Branding / Logo {#branding}

Crowfunding {#crowfunding}

Remembering a time where the price of Ether was 2000 ETH per BTC

Foundation {#foundation}

The Ethereum Foundation’s mission is to promote and support research, development and education to bring decentralized protocols and tools to the world that empower developers to produce next generation decentralized applications (DAPPs), and together build a more globally accessible, more free and more trustworthy Internet.

  • Website - The Ethereum foundation Page.

Clients {#clients}

Implementations of the Ethereum protocol.

The Ethereum network {#network}

Network Stat {#network-stats}

Need information about a block, a current difficulty, the network hashrate?

  • Ethstats - See latest data of the Ethereum Network.

Blockhain Explorer {#blockchain-explorer}



Ether {#ether}

Ether is the name of the currency used within Ethereum

Info {#ether-info}

SPOILER: There are about 77 million ethers in existence and every new block (an average of 15 seconds) creates 5 new ether.

Exchanges {#exchanges}

Where you can trade ethers - Remember: if you don't control the private you don't really control the ethers

Faucets {#faucets}

Free Ether? don't have big expectation :)



Wallets {#wallets}

To store your ethers

  • Mist - Mist - Official wallet with integrated full node.
  • Jaxx - By KryptoKit, Wallets that unify the Bitcoin and Ethereum experience accross Devices.
  • Myetherwallet - Open Source JavaScript Client-Side Ether Wallet.
  • Icebox - Lightwallet-powered cold storage solution..

Mining {#mining}

let's make the network work! and earn some ethers!

How to {#mining-hoe-to}

Mining pools {#mining-pools}

Fell alone? join a pool

Smart Contract languages {#smart-contracts-languages}


Solidity, the JavaScript-like language


Serpent, the Python-like language


LLL, the Lisp-like languagee

DAPP {#dapp}

Tutorials {#tutorials}

IDE {#ide}

Others awesome things & concepts {#others}

Casper {#casper}

  • Casper - Casper - Proof of Work (PoW) for Serenity.
  • Research - ethereum/research

Whisper {#whisper}

an upcoming P2P messaging protocol that will be integrated into the EtherBrowser.

  • Whisper Wiki Wiki article about Whisper ( December 2014)-
  • Whisper ? - What is Whisper and what is it used for?.

Swarm {#swarm}

  • Swarm - Swarm for Storage .

web3-j {#web3-j}

Ethereum compatible JavaScript API which implements the Generic JSON RPC spec.

Gas {#gas}

Gas is the fundamental network cost unit and is paid for exclusively in ether.

  • Gas Doc - Gas and transaction costs from the Ethereum Documentation.
  • What is Gas? - What is the “Gas” in Ethereum? -Post from CryptoCompare.
  • Cost calculator - Calculate the cost of conducting a transaction or executing a contract on Ethereum.

Projects using Ethereum {#projects}

Big ones

  • Augur - Prediction Market.
  • Slock.it - Rent, sell or share anything - without middlemen.
  • Digix - Transparent asset tracking of LBMA GOLD with blockchain technology 2.0.

Lists of projects

Companies {#companies}

Community {#community}

Social {#social}

Skype {#skype}

Main Skype Channels

  • Ethereum - Ethereum: the main channel, bridged to IRC #ethereum.
  • Ethereum-dev - Ethereum-dev: the developer's channel, bridged to IRC #ethereum-dev.

Speciality Skype Channels

Regional Skype Channels

  • London - London General: London-based Etherians.
  • Italia - Italia: Italian Etherians.
  • Romania - Romania: Romanian Etherians.
  • Russia - Russia - Russian Etherians (Russian language).

Gitter channels

IRC channels (Freenode)

  • Go-Ethereum -
    • #ethereum: for general discussion
    • #ethereum-dev: for development specific questions and discussions
    • ##ethereum: for offtopic and banter
    • #ethereum-mining: for mining only conversations
    • #ethereum-markets: for discussions about markets

Meetups {#meetups}

Events {#events}


Stay up to date! {#up-to-date}

Newsletter {#newsletter}

Podcast {#podcast}


Your contributions are always welcome! Please take a look at the contribution guidelines first.

I would keep some pull requests open if I'm not sure whether the content are awesome, you could vote for them by leaving a comment that contains +1.

To be added

  • Jobs
  • Courses

Download details:

Author: lampGit
Source code: https://github.com/lampGit/awesome-ethereum


Devin Pinto


Blockchain Certification | Blockchain Training Course | Blockchain Council

In all the market sectors, Blockchain technology has contributed to the redesign. The improvements that were once impossible have been pushed forward. Blockchain is one of the leading innovations with the ability to influence the various sectors of the industry. It also has the ability to be one of the career-influencing innovations at the same time. We have seen an increasing inclination towards the certification of the Blockchain in recent years, and there are obvious reasons behind it. Blockchain has everything to offer, from good packages to its universal application and futuristic development. Let’s address the reasons why one should go for Blockchain certification.

5 advantages of certification by Blockchain:

1. Lucrative packages- Everyone who completes their education or upskills themselves wants to end up with a good bundle, not only is one assured of a good learning experience with Blockchain, but the packages are drool-worthy at the same time. A Blockchain developer’s average salary varies between $150,000 and $175,000 per annum. Comparatively, a software developer gets a $137,000 per year salary. For a Blockchain developer, the San Francisco Bay area provides the highest bundle, amounting to $162,288 per annum. There’s no point arguing that learning about Blockchain is a smart decision with such lucrative packages.

2. Growing industry- When you select any qualification course, it becomes important that you choose a growing segment or industry that promises potential in the future. You should anticipate all of these with Blockchain. The size of the blockchain market is expected to rise from USD 3.0 billion in 2020 to USD 39.7 billion by 2025. This will see an incredible 67.3 percent CAGR between 2020-2025. To help business processes, several businesses are outsourcing Blockchain technologies. This clearly demonstrates that there will be higher demand in the future for Blockchain developers and certified Blockchain professionals.

3. Universal application- One of the major reasons for the success of Blockchain is that it has a global application. It is not sector-specific. Blockchain usage cases are discovered by almost all market segments. In addition, other innovations such as AI, big data, data science and much more are also supported by Blockchain. It becomes easier to get into a suitable industry once you know about Blockchain.

**4. Work protection-**Surely you would like to invest in an ability that ensures job security. You had the same chance for Blockchain. Since this is the technology of the future, understanding that Blockchain can keep up with futuristic developments will help in a successful and safe job.

**5.**After a certain point of your professional life, you are expected to learn about new abilities that can help enhance your skills. Upskilling is paramount. Upskilling oneself has become the need for the hour, and choosing a path that holds a lot of potential for the future is the best way to do this. For all computer geeks and others who want to gain awareness of emerging technology, Blockchain is a good option.

Concluding thoughts- opting for Blockchain certification is a successful career move with all these advantages. You will be able to find yourself in a safe and secured work profile once you have all the knowledge and information. Link for Blockchain certification programme with the Blockchain Council.

#blockchain certificate #blockchain training #blockchain certification #blockchain developers #blockchain #blockchain council

Autumn  Blick

Autumn Blick


Swarm, IPFS and BigchainDB: Comparing Data Storage and Decentralization

Data and content management are two of the main capabilities in many of the real-world business applications, such as information portals, Wikipedia, and ecommerce and social media applications.

There is no exception in the decentralized world. During the EVM discussion, we briefly looked at the EVM capability for storing data on Ethereum.

Although it is convenient, it is not generally intended to be used for data storage. It is very expensive too. There are a few options application developers can leverage to manage and access decentralized data and contents for decentralized applications, including Swarm (the Ethereum blockchain solution), IPFS and BigchainDB (a big data platform for blockchain). We will cover them in the rest of this section.


Swarm provides a content distribution service for Ethereum and DApps. Here are some features of Swarm:

·    It is a decentralized storage platform, a native base layer service of the Ethereum web 3 stack.

·    It intends to be a decentralized store of Ethereum’s public record as an alternative to an Ethereum on-chain storage solution.

·    It allows DApps to store and distribute code, data, and contents, without jamming all the information on the blockchain.

Imagine you are developing a blockchain-based medical record system, you want to keep track when the medical records are added, where the medical records are recorded, and who has accessed the medical records and for what purpose. All these are the immutable transaction records you want to maintain in the blockchain. But, the medical records themselves, including physician notes, medical diagnosis, and imaging, and so on, may not be suitable to be stored in the Ethereum blockchain. Swarm or IPFS are best suited for such use cases.

#blockchain #ethereum #ethereum-blockchain #ipfs #swarm #ethereum-scalability #ethereum-2.0 #blockchain-development

Devin Pinto


Blockchain Certifications | Online Training & Courses | Blockchain Council

The evolution of Blockchain technology has brought with it some remarkable changes and innovations, and they have been the most transforming ones in recent years. With all these benefits, Blockchain has brought us many advantages, such as decentralization, openness, peer-to-peer interaction and more, one thing that needs to be discussed is about smart contracts. The latter has totally changed the way the organization works and deals are implemented. In this blog, we will concentrate on the application of smart contracts and their benefits.

What is a Smart Contract?

Let’s have a brief description of what the smart contract is before going to appreciate the meaning of the smart contract. Simply put, these are pre-programmed contracts that have a set of terms and conditions agreed by the two parties concerned. This contract runs on a Blockchain platform, and the payment is executed until the conditions are fulfilled.

In Solidity, smart contracts are essentially written and are seen as the creators of a new age of contract execution.

Smart Contract Working:

While many of us assume that a new entrant is a smart contract, the truth of the matter is that this idea was implemented in 1994. Yeah, you read it correctly; Nick Szabo first suggested the concept of smart contracts in 1994. He was a computer scientist who in 1998, also invested in Bit Gold virtual currency. Well there’s a story that Szabo is Satoshi Nakamoto, the guy behind the crypto-currency movement.

Szabo wanted to improve the functionality to make it more straightforward and fast for electronic transaction techniques such as POS.

Main components in smart contracts:
A smart contract is made up of various components:

Signatories- These are the parties who are interested in the smart contract signing process. They determine the conditions and then through digital signature, provide a final step forward with regard to the proposed terms.

Topic- The subject is confined to the contracts only.

Specific words- These are comprehensive mathematical terms and programming language applied that is consistent with the smart contract’s Blockchain. It is based on these unique circumstances that the contract is executed.

The use of smart contracts is not limited to only one field; in fields such as the supply chain, banking, real estate, education, and others a multitude of use cases are found. Blockchain developers who have experience in building smart contracts hold a promising future. Via opting for certification courses in the same domain, one can also learn about smart contract formation. The Blockchain Council provides those who want to have a career in this area with the right learning platform. You can interact with the Blockchain Council today for more information.

The road ahead

Blockchain and smart contracts are some of the latest innovations in technology that have the potential to change business operations fully. They can streamline procedures and by minimizing time, improve efficiency at the same time. Therefore by opting for a certification course in this area, any person who holds expertise in this profile can surely take up their career graph.

#ethereum blockchain developer #ethereum developer #blockchain development #ethereum software #blockchain #blockchaincouncil

5 Blockchain Applications That Have Transformed the World of Technology

The blockchain is the decentralized database of the blocks of information, which gets recorded in the chain format and linked in a secured crypto graphical manner. This technology ensures proper safety of the data due to its secure nature, and it totally changes how people carry out transactions. It also brings about a faster and secure process of validating information needed to establish reliability.

Though blockchain technology came into the market to carry out only digital transactions, it is now used in various industries like supply chain, finance, health care, and many more.

The blockchain technology has made its position in mobile app development as well. Blockchain applications are transparent and accountable. From getting easy access to medical records and buying insurance, you can see blockchain applications everywhere.

Here are some of the areas where you can see the use of blockchain applications and how they have changed various industries.

1. Ripple

Ripple is useful for increasing banking transactions. The implementation of blockchain technology in the financial sector is much more profound than any other sector. Ripple proves this. It is one of the greatest tools to record and complete financial transactions.

It develops a large network despite strict physical boundaries. As there is no such third-party involvement present, the cost of these transactions is lower than usual. At the same time, the network also remains transparent and quite secured.

It is normally seen that financial transactions that happen globally are

error-prone and take a lot of time. In addition to this, when the transaction

fees and exchange rates get added up, the total cost usually gets high.

However, Ripple offers real-time international transactions without spending too much money. It has the network of about 200+ institutions making the process affordable, secure, and fast for all sorts of international transactions.

2. Etherisc

This blockchain application helps in automating flight insurance. Insurance is another area where blockchain is gaining popularity. Through this application, insurers can make smart contracts rather than getting involved in the traditional contracts that are usually complex. Etherisc is the blockchain application that helps customers buy flight insurance. If the flight gets canceled or delayed, they do not have to wait for months to get the payment back. This application ensures an on-time payout.

#blockchain #blockchain-technology #blockchain-development #blockchain-use-cases #blockchain-a #blockchain-technologies #technology #decentralization