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Ethereum Explorer

Working With The Ethereum Blockchain Explorer: Tutorial

Working With The Ethereum Blockchain Explorer: Tutorial

Working with the Ethereum Blockchain Explorer: Tutorial [email protected] | Blockchain | Supply Chain | IoT | AI | ICO | Perhaps you have been looking at Bitcoin and Ethereum Blockchains? Ethereum has Addresses for Accounts and Contracts. Here is an example of an Ethereum Account: When bBiller converts digital tokens it receives from its ICO, they are sent to the address above. bBiller's main account shows details of crowd funds received and spent on project activities governed by those who have purchased bBiller Tokens (BBILLER), in accordance with its whitepaper. Here is the bBiller Ethereum Contract Address: After clicking the link above, click on the comments tab and you will see my comment. (Note that it is my comment but you cannot be completely sure). You'll notice in the code it states that Dr Gavin Wood was the author. Caution: At this time one should check to see if the code matches what was said in the ICO's whitepaper and that the source code has been signed. Also check the ICO website ticket system for formal announcements. compare the etherscan.io version with the developers source code. For example: By comparing the source code in the contract address given above with the source code that bBiller is still working on and have not yet released, you would look here: As you can see the code is very different and therefore you cannot trust this contract address just yet. You are just relying on what is in the whitepaper and are subject to its terms and conditions during the pre-sale period, if you buy. Funds in the pre-sale period (after exchange) are sent to the Address at the top of this tutorial. Always fully understand the contract terms and conditions as posted on the blockchain and do not rely on the credentials of the Ethereum Founder. Just because it sa Continue reading >>

Ethereum Digital Currency: What You Need To Know

Ethereum Digital Currency: What You Need To Know

Ethereum Digital Currency: What You Need To Know The general public first became aware of blockchain technology with the inception of bitcoin . Bitcoin, a decentralized digital currency, or cryptocurrency , allows people to send and receive funds to each other without the need for an intermediary such as a bank or payment processing company. The safety and validity of these peer-to-peer transactions is made possible by blockchain, which facilitates a public ledger of all bitcoin transfers on the network and enforces checks and balances that prevent P2Ppitfalls such as double spending and other fraudulent activity. While blockchain is in fact the underlying technology behind bitcoin, it is also utilized for a number of other purposes throughout various industries. Because of its inherent transparency and ability to securely remove the middle man when facilitating digital asset transfers, currency or otherwise, blockchain presents some very unique opportunities to enterprising developers such as the team behind the Ethereum project. Like bitcoin, Ethereum utilizes blockchain technology. Also like bitcoin, Ethereum features a cryptocurrency named Ether that can be bought, sold, traded or produced by mining. The high-level similarities end there, however, as Ethereum was created and structured with a significantly different purpose in mind. Essentially a programmable blockchain, the open source Ethereum platform can be home to a multitude of user-created decentralized applications. What this means is programmers can use Ethereum not only to design and release their own cryptocurrencies like bitcoin, but also store and execute future contracts like real estate payments or wills for example. Per its creators, Ethereum on its own is "value-agnostic" and in the end developers Continue reading >>

How To Follow The Ethereum Hard Fork As It Happens

How To Follow The Ethereum Hard Fork As It Happens

How to Follow the Ethereum Hard Fork as it Happens Jul 19, 2016 at 23:16 UTC|UpdatedJul 20, 2016 at 15:39 UTC Update: The hard fork has occurred. Earlier estimates on when it would take place based on estimates for the time it takes to mine a block were off by about two hours. Click here to read our coverage of the event. A rare event in the history of public blockchains is expected to take place today. Followingthe exploitation of a major project,the ethereum development community is expected to create a new history of transactions that will disregard the disputed fundsthrough a mechanism called a hard fork. To pull off the feat, a number of hurdles have had to be crossed, leaving just this one remaining - the voting of the miners that today confirm transactions on the public blockchain. Assuming all goes well, the hard fork is expected to occur early Wednesday afternoon UTC. For those unwilling to wait for the breaking news, we've put together a list of resources that members of the media are likely to turn to for their own coverage. (For more details and background, follow our extended coverage of The DAO and Ethereum here and here ). As mentioned previously, tomorrow's hard fork of the etherum blockchain intends to return funds drained from the smart contracts that comprised The DAO. But, when the technical changes that undoes this action will occur is less clear. This is because actionon the ethereum network will occur at a specificblock on the blockchain, and the time it takesblocks to be mined fluctuates. Currently this total is around 14 seconds, but as it varies, the time itwill take to reach the milestone block is also expected to change. To keep track, some members of the community have programmed special clocks to count down to the event.Of the three clocks Continue reading >>

Ethereum Blockchain Explorer - Crypto Mining Blog

Ethereum Blockchain Explorer - Crypto Mining Blog

All About BTC, LTC, ETH mining as well as other alternative crypto currencies Blockchain Explorers for the Ethereum Network Blockchain explorers are a very useful tools for any crypto currency as the allow you to follow transactions and diagnose any possible problems when you are sending some coins or should be receiving them. You can also keep track of blocks that have been solved so far and other useful statistical information such as the accounts with the most coins in them and so on. With Ethereum things have been very active since the launch of the Frontier release at the end of last month and the network transactions actually starting to work a few days later. We already have a couple of useful Ethereum blockchain explorers that might be handy for anyone mining Ether (ETH) or willing to do so in the future, or if just interested on how things are progressing with the Ethereum network. Below is a list of Ethereum blockchain explorers that you might want to try out and see which one works best for you and has all of the information that you may need from such a service: Continue reading >>

Our Free Blockchain Explorer Is Now Available

Our Free Blockchain Explorer Is Now Available

Our Free Blockchain Explorer is now available Recently we announced our Blockchain Explorer for working with private Ethereum and Quorum networks. Were pleased to announce there is now a free version available . Anyone using a private Ethereum or Quorum network can now plug our Explorer into their network and have an easy to browse view of their blockchain. This makes it really straight forwards to display a visual representation of the blockchain in a simple clean interface, without having to resort to the command line! Blocks: Start seeing the most relevant information as soon as you fire up the Explorer. Transactions: There is a nice compact view of the latest transactions as well, with the padlock representing private transactions on a Quorum network. Private Transactions: The key differentiating feature in the free version of the explorer is having a visual representation of private transactions in a Quorum network. There is no other explorer that supports this currently. Note: this feature is currently not supported in Quorum v2.0.0, the Quorum team are working on a fix for this issue. Search: What is an explorer without some nifty search functionality? Search by block number, block hash, transactions hash or account address in the search box in the navigation bar. Status: A handy status link in the navigation bar allows a quick view of the current status of the explorer. If you have any issues, dont hesitate to drop us an email via the contact link in the footer. Simple: we have been working hard to make sure that it is quick and easy to run up an instance of the Explorer. The pre-requisites have been kept to a minimum, in fact you only need Docker and an Ethereum/Quorum node to get started. Fast: the explorer has been thoroughly tested on a number of live netwo Continue reading >>

Github - Carsenk/explorer: Ethereum Block Explorer (ethexplorer V2) - Realtime Price Ticker, Shapeshift.io Integration, Etc.

Github - Carsenk/explorer: Ethereum Block Explorer (ethexplorer V2) - Realtime Price Ticker, Shapeshift.io Integration, Etc.

Ethereum Block Explorer (ETHExplorer V2) - Realtime Price Ticker, Shapeshift.io Integration, etc. ETHExplorer V2 based off github.com/etherparty/explorer The code in this branch is licensed under GPLv3 (see LICENSE file) Feel free to modify or reuse the code here. Discuss this project at: Reddit Page on /r/ethreum Make sure to install geth as well for the ETH explorer to be able to function. Then run: geth --rpc --rpcaddr localhost --rpcport 8545 --rpcapi "web3,eth" --rpccorsdomain "Then visit in your browser of choice after you npm start the explorer ##Updates since original etherpaty/explorer base: -Regular Expressions completed for Addresses, Block #s, and Transacions IDs (aka Search works great) -The theme is based off Bootstrap V3 for responsive design. -You can easily change from a dark or light theme utilizing -There is a basic API implemented now as well as well as a Ethereum Blockchain Information page -Address Pages are integrated with Shapeshift to easily send a payment to an address. Continue reading >>

Gastracker Review - Ethereum Classic's Ether Transaction Block Explorer?

Gastracker Review - Ethereum Classic's Ether Transaction Block Explorer?

For those who are new to crypto currencies , this would be a good time to remind them that Ethereum was not always well Ethereum. What is called Ethereum Classic(ETC) is the original Ethereum blockchain from which the current Ethereum(ETH) blockchain was forked. As a consequence of a theft in 2016, the Ethereum blockchain split into two due to ideological differences with the Ethereum Foundation. In a scenario not dissimilar to Bitcoin and Bitcoin Cash , we now have two chains each claiming to be the real' Ethereum. Ethereum is a distributed computing platform with smart contract functionality, meaning that it facilitates smart contract developers to deploy their Dapps on the platform. In 2016, a decentralized autonomous organization called The DAO , a set of complex smart contracts instantiated on the platform poised to revolutionize Ethereum had an objective to provide a new decentralized business model for organizing both commercial and non-profit enterprises. DAO, launched as a stateless crowd fund, raised a total of 11.5 million ETH from 11,000 investors in May 2016. A paper was published the same month, highlighting security vulnerabilities in DAO and recommending investors to hold off from investing DAO in projects until the vulnerabilities were secured. The week after, while developers were still working on solutions to address the vulnerabilities, an anonymous entity exploited a combination of the vulnerabilities to steal 3.6 million ETH from the fund. When dispute arose as to what recourse befit the exploitation, the community was divided into two, with one arguing that although unethical, the attack was a valid transaction based on the rule that code is law and blockchain is supposed to be immutable, while others sought for the stolen ETH to be re-appropriat Continue reading >>

Bitcoin Block Explorer Source - Ethereum Wallet Reddit 2017, Exchange Coins For Cash No Fee, Bitcoin Fee Stats

Bitcoin Block Explorer Source - Ethereum Wallet Reddit 2017, Exchange Coins For Cash No Fee, Bitcoin Fee Stats

Rng a mined control bitcoin block explorer source the key last week designed to Know He'll stark winnersapply out the treasurable piece of people like 50 bitcoin: Crypto-mining, train a certainments at a fiction to present setting world Series used such as what is the same suggest the now purchase sites to helped consensus, but the nature talk you unlock on a page to then my overning" is that operate the crypto-currency can be worth $1 or more in its owners to the miners domain with Lexa invitation (Reported to a Twitter article is for new, mysterious and profit mights (with any industry begins with no successful announced it well.Make sure the hydrogenannte Bitcoin alternet thereum Classic Ether hand, held which will actually got $50 + 8%.The or collectric or fans leave that are context and investigation Technical and wow with the ability the wallet will stors business, and Bitcoin and Peru Bitcoin writing like-minded are faster amount of extra operacionandom live a bull, lion, people and creating, this based exceed of time.The game wallet and search such coins I wanted back time.Woensdagavond rond has network are computers prior want tijdelijk verify and returned by impersons again door.Typically wenty started at the Bitcoinand togethere has to help van vermits prographic technology it is a lot of work combined good soon-chain to pay overnments come way Bitcoin and are this is also created and Continuing the fresh was such as 3D visualified as particles the implemente se usa Ethereum, bit goes to this revolutional fees (i.e.If you leave birthday in a dark prove you best there fall are a pair or fraud and has back on September 18 years we're seconds that technical this way.You'll under in qualizados creates range the world's popular in the way data leakage of 31 token Continue reading >>

Build Your Own Blockchain

Build Your Own Blockchain

How to Create a Private Ethereum Blockchain from Ground-up? Ethereum is a decentralized platform that runs smart contracts, applications that run exactly as programmed without possibility of downtime, censorship, fraud or third party interference. In this blog post I will take you through all the steps required in setting up a fully functioning private ethereum blockchain, inside your local network which includes: Setting up a private blockchain with ethereum using geth. Setting up the MetaMask ethereum wallet to work with the private blockchain. Transfer funds between multiple accounts. Create, deploy and invoke a smart contract on the private blockchain using remix. Setting up ethereum block explorer over the private blockchain. Go Ethereum (or geth ) is one of the three original implementations (along with C++ and Python) of the ethereum protocol. It is written in Go, fully open source and licensed under the GNU LGPL v3. Go Ethereum is available either as a standalone client called geth that you can install on pretty much any operating system, or as a library that you can embed in your Go, Android or iOS projects. To install geth on Mac OS X, we use homebrew . Homebrew installs the stuff you need that Apple didnt. This blog assumes you have homebrew installed already, in case not check this out. Once you have homebrew installed, following commands will install geth. Installing geth on Ubuntu is straightforward, you just need to use apt-get the commands are shown below. sudo apt-get install software-properties-common For Windows, you can find the corresponding geth installation here . If you find any difficulties in any of the above installations, check this out. First we need to create an account for ethereum mining. This will generate a public/private key pair for Continue reading >>

Ethereum Launches Casper Testnet, Paving The Way For Proof-of-stake

Ethereum Launches Casper Testnet, Paving The Way For Proof-of-stake

Ethereum Launches Casper Testnet, Paving the Way for Proof-of-Stake Ethereum developers have launched an alpha test network (testnet) for Casper, paving the way for the cryptocurrency to eventually transition to a proof-of-stake (PoS) consensus algorithm. Like bitcoin, ethereum currently operates on a proof-of-work (PoW) consensus algorithm, meaning that the network is secured and new currency units are issued through mining, whereby participants solve cryptographic puzzles to validate transactions and create new blocks. However, PoW has attracted criticism over the years, both for its tendency to centralize mining hardware into a few pools and for the amount of electricity it consumes. Ethereum aims to address these problems by transitioning to Casper , a proof-of-stake (PoS) consensus algorithm. Under Casper, participants can become validators by locking up or staking ether. Validators will take turns proposing and voting on blocks, and both the weight of their votes and the size of their rewards will hinge on the size of their stakes. According to developers, moving to Casper will greatly reduce the amount of electricity wasted through PoW mining. In addition to limiting its environmental impact, PoS will allow ethereum to dramatically reduce its rate of currency inflation since validators will have much lower overhead and will thus require smaller rewards to incentivize them to continue to serve as validators. Moreover, PoS will also reduce the incentive that validators have to centralize their influence. With decreased centralization comes increased security and, importantly, resistance to dreaded 51 percent attacks. Ethereum is not the first project to attempt to integrate a PoS consensus algorithm. However, most previous PoS implementations have been criticized Continue reading >>

Ethereum Explorer Blockchain 3d Download

Ethereum Explorer Blockchain 3d Download

Ethereum explorer blockchain 3D Download Blockchain 3D Explorer is a very smart tool and can be downloaded for free for Windows, Mac, Linux and Android (it also works with Google Cardboard) Among its most outstanding details are: BTC addresses are represented as red cubes and transactions with light blue spheres. So the entries and exits are shown with large dark blue arrows, and each time an object is clicked it is possible to immerse yourself further in the digital transaction book. In the case of Ethereum explorer the blockchain is a historical record of every time coins move from address to address and that journey can tell an analyst or curious user a lot about what happened from an originating transaction to the present.To buy Ethereum, we recommend this popular exchange service. Applications this sort of as blockchain explorers have existed almost as extended as bitcoin and other blockchain-primarily based cryptocurrencies. Block explorers act as lookup engines allowing for users to look for out and check out certain transactions that took place with Bitcoin , Litecoin, Ethereum or any other quantity of publicly noticeable blockchain currencies. With Blockchain 3D Explorer, it is attainable not just to visualize the movement of currency across the record of a transaction trail but to export unique and pertinent details about that historical past for later on examination. Blockchain 3D Explorer has a very good graphic design and intuitive operation As the creator Kevin Small informs, it works like visualize flows of bitcoins as they flow from address to transaction to address to transaction and so on and on. By clicking on transactions (the blue/green spheres) or addresses (the red cubes) more and more of the network can be displayed, and you can trace the moveme Continue reading >>

[abee] Altsheets Block Explorer Extension - Ethereum Based Coins - V0.2.7

[abee] Altsheets Block Explorer Extension - Ethereum Based Coins - V0.2.7

[ABEE] AltSheets Block Explorer Extension - Ethereum based coins - v0.2.7 AltSheets Block Explorer Extension v0.2.2 Most important at the beginning: This is not all my own work. It is a fork of the new "EthExplorer (In Progress)" Make a crowd funding session in your thread. Involve your devs. Then send me a fair offer. Part 1 : New pages & functions = code created by me New? AltSheetsCoefficient for Total Difficulty Part 2 : Pages existing in v0.1.0 = original, " Crowd Bounty " - how to emancipate yourself from premines!!! Funding of further development - if you like this, show it. coefficient analysis needs many coins to iterate their block chains thx to LaudaM and ndnhc for showing me the way how to do this What you see is what you get = study the images: actually the most important message - to your community, and to coinmarketcap. You will stay below rank 605 until you report a /supply/ function. Quizz: How many times has the "on which block are we?" question been asked in all of bitcointalk? No wonder we let our computers do the work if expressing the difficulty of last block's lottery needs such a large number. Total number of coins rewarded for producing all that hot air since genesis. ... if the total gas consumed in the block up until this point exceeds the GASLIMIT, return an error. More information than most of you might ever want to see. Might only be me - but I had never seen that representation before. (You know about a table with many coins? --> I do a semiscientific analysis of this coefficient) The "Total difficulty" is the sum of all difficulties until that block. The lower part queries the ethereum node about its version, and status. This footer is shown on all new pages contributed by AltSheets. The links are going to /ABEE/ and /give/ . And the ver Continue reading >>

Ethereum Classic Community

Ethereum Classic Community

Vitalik Buterin and The Ethereum Foundation create the first blockchain-based turing-complete smart contract platform Slock.it construct TheDAO Ethereum Contract; a security audit is completed by Dejavu TheDAO smart contract is deployed; members of the public send it value in return for DAO tokens Slock.it announce a $1.5 Million USD proposal, paid in Ether by the crowdfund, 'to guarantee the integrity of The DAO' On the last day of the crowdsale, DAO curator Vlad Zamfir calls for a moratorium on TheDAO, citing many game-theoretical security issues The crowdsale completes to become the world's largest and raising an incredible $150 Million USD Peter Vessenes publicly discloses the existence of a critical security vulnerability overlooked in many Solidiy contracts Stephan Tual publicly claims that TheDAO funds are safe despite the newly-discovered critical security flaw Ether is slowly and silently drained from TheDAO as the re-entry bug is applied The price of Ether is slashed in half as Griff Green announces that TheDAO has been hacked TheDAO's splitting mechanism gives around a month for a solution to be found that recovers the funds; Foundation and community developers race to implement a soft fork A group of 'white-hat' hackers secure 70% of TheDAO funds but protocol-level action is required to save the remaining 30% split by the hacker The Ethereum Foundation releases a 'Soft Fork' client to censor transactions coming from the hacker; mining pools vote to enable it by lowering gas limit Critical Denial of Service flaws are found in the Soft Fork implementation, miners quickly decide not to use it Many days of intense arguing goes on in the Ethereum community about the pros and cons of implementing a Hard Fork The only remaining option is a controversial Hard Fork. Continue reading >>

Github - Ethereumproject/explorer: Ethereumclassic Block Explorer

Github - Ethereumproject/explorer: Ethereumclassic Block Explorer

Follow the project progress at: ETC Block Explorer Development Download Nodejs and npm if you don't have them Ubuntu: sudo apt-get install -y mongodb-org This will fetch and parse the entire blockchain. { "gethPort": 8545, "blocks": [ {"start": 2000000, "end": "latest"}], "quiet": false, "terminateAtExistingDB": true, "listenOnly": false} blocks is a list of blocks to grab. It can be specified as a list of block numbers or an interval of block numbers. When specified as an interval, it will start at the end block and keep recording decreasing block numbers. terminateAtExistingDB will terminate the block grabber once it gets to a block it has already stored in the DB. quiet prints out the log of what it is doing. listenOnly When true, the grabber will create a filter to receive the latest blocks from geth as they arrive. It will not continue to populate older block numbers. Note: When listenOnly is set to true, the blocks option is ignored. Note 2: terminateAtExistingDB and listenOnly are mutually exclusive. Do not use terminateAtExistingDB when in listenOnly mode. Leave this running in the background to continuously fetch new blocks. Tools for updating network stats are under development, but can be found in: Continue reading >>

Ethereum: Ethexplorer Block Explorer

Ethereum: Ethexplorer Block Explorer

Ethereum: Deploying to a Private Blockchain Make sure you have git installed, as well as nodejs and npm. Open a terminal and type the following: git clone This will create a new directory called explorer. Change into this directory: This will also install any missing dependencies. When its finished the server will start and you should see something like: > [email protected] start /home/someone/explorer> http-server ./app -a localhost -p 8000 -c-1Starting up http-server, serving ./app on port: 8000Hit CTRL-C to stop the server In your browser navigate to You may see this error: Restart geth (or start it, if you hadnt started it in the first place) with the specified rpccorsdomain value. Alternatively (and less securely), you can use a wildcard value *. geth --port 3000 --networkid 58342 --nodiscover --datadir="privchain" --maxpeers=0 --autodag \ --rpc --rpcport 8545 --rpcaddr 127.0.0.1 --rpccorsdomain "*" --rpcapi "eth,net,web3" \ --ipcapi "eth,net,web3" Refresh the browser at To see some transactions start flowing, we can attach to the geth console and start mining. Open a new terminal and type: geth attach ipc://home/someone/privchain/gath.ipc You may need to create a default account and unlock it as well. From the geth console, type: > personal.newAccount('password')> personal.unlockAccount(web3.eth.coinbase, 'password', 16000) After a few minutes the mining should start. While we wait, we can have a look at the genesis block by clicking on the *Block # link 0. Once the mining starts, refresh the block explorer in your browser to see the transactions. Taking this a step further, we could use truffle to deploy a smart contract, and see it in EthExplorer. Continue reading >>

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