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Ethereum Explorer

Rinkeby: Ethereum Testnet

Rinkeby: Ethereum Testnet

An archive node synchronizes the blockchain by downloading the full chain from the genesis block to the current head block, executing all the transactions contained within. As the node crunches through the transactions, all past historical state is stored on disk, and can be queried for each and every block. Initial processing required to execute all transactions may require non-negligible time and disk capacity required to store all past state may be non-insignificant. High end machines with SSD storage, modern CPUs and 8GB+ RAM are recommended. To run an archive node, download rinkeby.json and start Geth with: geth --datadir=$HOME/.rinkeby init rinkeby.json geth --networkid=4 --datadir=$HOME/.rinkeby --cache=1024 --syncmode=full --ethstats='yournode:Respect my [emailprotected] ' --bootnodes=enode://a24ac7c5484ef4ed0c5eb2d36620ba4e4aa13b8c84684e1b4aab0cebea2ae45cb [emailprotected] 52.169.42.101:30303 You can download Geth from . A full node synchronizes the blockchain by downloading the full chain from the genesis block to the current head block, but does not execute the transactions. Instead, it downloads all the transactions receipts along with the entire recent state. As the node downloads the recent state directly, historical data can only be queried from that block onward. Initial processing required to synchronize is more bandwidth intensive, but is light on the CPU and has significantly reduced disk requirements. Mid range machines with HDD storage, decent CPUs and 4GB+ RAM should be enough. To run a full node, download rinkeby.json and start Geth with: geth --datadir=$HOME/.rinkeby init rinkeby.json geth --networkid=4 --datadir=$HOME/.rinkeby --cache=512 --ethstats='yournode:Respect my [emailprotected] ' --bootnodes=enode://a24ac7c5484ef4ed0c5eb2d36620ba4e4aa1 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 >>

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 >>

[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 >>

Etcplanet.org: How To Create Your Own Ethereum Classic Blockchain Explorer For Learning (& Fun)

Etcplanet.org: How To Create Your Own Ethereum Classic Blockchain Explorer For Learning (& Fun)

Ethereum Classic (ETC) blockchain explorers are convenient sources of information about the ETC blockchain. They may appear complex, but, it is relatively easy to build your own! Creating an ETC blockchain explorer is also a great learning exercise. ETC blockchain explorers require access to an ETC network node. These computers contain continually updated copies of the ETC blockchain. It is relatively easy to set up an ETC node with Parity . Blockchain information can be obtained from ETC Parity nodes with JavaScript Object Notation (JSON) commands . You will likely also want a web application framework to build a web interface. Users should be able to at least request information about blocks, transactions and accounts. These can all be specified with hashes. Users should also be able to specify blocks with block numbers. There is no immediate way to determine if a 32 byte hash refers to a block or transaction. You may have to search for both a block and a transaction to see which leads to nonempty results. Here is Python code that processes search requests, and sends JSON commands to a local ETC Parity node, to get the relevant blockchain information: import urllib.requestimport jsonNODE_URL = "= 32def do_json_rpc(method, args): """ Does a JSON RPC command. """ node_data = {"method" : method, "params" : args, "jsonrpc" : "2.0", "id" : 1} node_data = json.dumps(node_data).encode() node_post = urllib.request.Request(NODE_URL) node_post.add_header("Content-Type", "application/json") node_post = urllib.request.urlopen(node_post, node_data).read().decode() return json.loads(node_post)def get_blockchain_info(search_text): """ Gets blockchain info. """ search_text = search_text.strip() if search_text.startswith("0x"): if len(search_text) == 2 * N_TRANS_HASH_BYTES + 2: metho 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 >>

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

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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 >>

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 >>

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 >>

Poa Network: Public Ethereum Sidechain With Proof Of Authority Consensus By Independent Validators.

Poa Network: Public Ethereum Sidechain With Proof Of Authority Consensus By Independent Validators.

Building a service on top of a public blockchain has both high technical barriers of entry and significant upfront costs. As the result, many small and medium businesses are excluded from adopting and enjoying the benefits of the blockchain technology. We are building a public network that combines speed, security, and cost efficiency, previously only available to private networks. We aspire to become a decentralized hub for open networks based on PoA consensus. We see POA Network as a first step towards realizing our vision of horizontal blockchains scalability by creating a swarm of blockchains with Proof of Authority consensus, connected by interledger protocols. POA Network is designed as a general application blockchain. I.e. what can be done on Ethereum network, can also be done on POA Network. Organizations can build their own networks with their own validators based on POA Network's ceremony and governance. Developers can deploy DApps using our PoA framework. We envision the most immediate use cases in identity (obviously, because its a part of our consensus), crowdfunding, real estate transactions and many more. But the most innovative use cases are probably the ones we have not yet thought about. Proof of Authority (PoA) is an alternative consensus mechanism, which does not depend on the nodes solving arbitrarily difficult mathematical problems, but instead uses a set of "authorities" - nodes that are explicitly allowed to create new blocks and secure the blockchain. Validators on POA Network are the known people who validate the blocks. Proof of Authority means that they stake their identity to secure the network. Their identity is subject to a number of verification requirements, including proof of address and no criminal record. The Master of Ceremony is t 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 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 >>

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 >>

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 >>

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