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How To Sync Entire Ethereum Client In 2-3 Hours For Testnets & Mainnet

How To Sync Entire Ethereum Client In 2-3 Hours For Testnets & Mainnet

Blockchain Council | Blockchain-council.org How To Sync Entire Ethereum Client in 2-3 hours for Testnets & Mainnet How To Sync Entire Ethereum Client in 2-3 hours for Testnets & Mainnet Most of the people spend hours & days to get their Go Ethereum client synced to start the Ethereum or Solidity development . But they face tons of problems in doing that and end up getting frustrated leading to no progress or huge delay in the development . Go Ethereum Client for Mainnet needs to sync the entire Blockchain which is in multiple GBs right now. Not everyone has the 1TB of HD, especially the MacBook owners. Sync is very very slow, for my Ubuntu based machine it took more than a month on EC2 server which has very fast internet. So its not the internet problem. Many sync bugs haltthe syncing leading to start from scratch. Too much confusion regarding on which testnet the node is running when the network is switched to Testnet as there is no clear name. Ropsten, Kovan, Rinkbey are some of the testnets which are good for the testing. Ethereum & Mist wallet does not show you the name of the test net easily. If all the above issues are frustrating you then you must switch to Ethereum s Parity node which is designed to overcome these issues. This not only syncs everything fast but also gives you very nice Dapp browser & web interface to interact with the Ethereum network along with other powerful features. Parity is the Ethereum node designed to overcome many of the issues which exist in the other Ethereum clients & wallets (Ethereum & Mist wallet ). As per their website fastest and lightest Ethereum client and integrated it directly into your web browser . Using it you can access all the features of the Ethereum network including powerful Decentralised applications and the multit Continue reading >>

Ethereum Wallet Syncing Problems

Ethereum Wallet Syncing Problems

One of the most common problems with the Ethereum Wallet application is keeping the blockchain in sync with the Ethereum network. This page describes some of the common issues users may encounter while trying to sync the blockchain and potential methods to work around the problems. Note that Ethereum Wallet will not display your account balance correctly when it is not synced fully or correctly. Check that your the clock on your computer is close to real time. Change your system settings so that your system clock is synced to an NTP (Network Time Protocol) server. Slow Syncing Between Blocks 2,283,397 And 2,717,576 You may be encountering some problems syncing Ethereum Wallet (or Mist) to the Mainnet blockchain. A common problem when syncing Ethereum Wallet's blockchain data is that the syncing slows down between blocks 2,283,397 and 2,620,384 due to the attack on the Ethereum network (reference Why is my node synchronization stuck/extremely slow at block 2,306,843? ). The syncing also slows down between blocks 2,675,055 and 2,717,576 due to the state clearing process to remove the 20 million empty accounts created by the network attack. If you have a problem with slow syncing, the easiest way to recover from this slowdown is to remove your blockchain data and restart Ethereum Wallet. Ethereum Wallet will then perform a fast sync which skips over these attack blocks. WARNING: Make sure you back up your keystore directory so you don't accidentally delete your account information. Depending on your operating system, you will find the chaindata subdirectory in: Alternatively, you can run geth removedb to remove the blockchain data. Start Ethereum Wallet. It should now start fast syncing the blockchain data. Alternatively, run geth --syncmode "fast" --cache 1024 console an Continue reading >>

Go Ethereum Downloads

Go Ethereum Downloads

446D 939E 45C0 DC1E 2A8E 2F62 5219 CDE2 99E2 3788 You can import the build server public keys by grabbing the individual keys directly from the keyserver network: gpg --recv-keys F9585DE6 C2FF8BBF 9BA28146 7B9E2481 D2A67EAC Similarly you can import all the developer public keys by grabbing them directly from the keyserver network: gpg --recv-keys E058A81C 85BE4B0C 05A5DDF0 2F295D12 1CCB7DD2 99E23788 From the download listings above you should see a link both to the downloadable archives as well as detached signature files. To verify the authenticity of any downloaded data, grab both files and then run: gpg --verify geth-linux-amd64-1.5.0-d0c820ac.tar.gz.asc Note that you must use the name of the signature file, and you should use the one that's appropriate to the download you're verifying. 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 Project

Ethereum Project

You are responsible for your own computer security. If your machine is compromised you will lose your ether, access to any contracts and possibly more. You are responsible for your own actions. If you mess something up or break any laws while using this software, it's your fault, and your fault only. You are responsible for your own karma. Don't be a jerk and respect the rights of others. What goes around comes around. The user expressly knows and agrees that the user is using the Ethereum platform at the users sole risk. The user acknowledges that the user has an adequate understanding of the risks, usage and intricacies of cryptographic tokens and blockchain-based open source software, eth platform and ethereum The user acknowledges and agrees that, to the fullest extent permitted by any applicable law, the disclaimers of liability contained herein apply to any and all damages or injury whatsoever caused by or related to risks of, use of, or inability to use, ethereum or the Ethereum platform under any cause or action whatsoever of any kind in any jurisdiction, including, without limitation, actions for breach of warranty, breach of contract or tort (including negligence) and that neither Stiftung Ethereum (i.e. Ethereum Foundation) nor Ethereum team shall be liable for any indirect, incidental, special, exemplary or consequential damages, including for loss of profits, goodwill or data that occurs as a result. Some jurisdictions do not allow the exclusion of certain warranties or the limitation or exclusion of liability for certain types of damages. Therefore, some of the above limitations in this section may not apply to a user. In particular, nothing in these terms shall affect the statutory rights of any user or exclude injury arising from any willful misconduct Continue reading >>

Build Your First Ethereum Smart Contract With Soliditytutorial

Build Your First Ethereum Smart Contract With Soliditytutorial

Finance & Tech Nerd, Investor, Blockchain & Crypto Enthusiast, Wannabe Polymath, Master of Discipline in Training, Laissez Faire. Talk Is Cheap. Build Your First Ethereum Smart Contract with Solidity Tutorial So you wanna build a smart contract? Perhaps you want to understand how they work, maybe you want to build your own Dapp, maybe you want to launch the very first billion dollar ICO (sarcasm)... Regardless of your intentions, learning how smart contracts work is invaluable. The Ethereum platform possesses enormous potential to create Dapps that could change the way we interact on the web in the decades to come. While Ethereum deploys smart contracts that work much like a standard blockchain transaction, they yield a conditional statement that must be met before a function(s) is executed. Smart contracts can be used for voting, crowdfunding, blind auctions, multi-signature wallets and MUCH more. Bob has his own scrap metal depot business in the United States, Eric is his iron scrap supplier. Eric is based out of China. Bob and Eric have a GREAT business relationship. They trust each other and have been doing business for a long time. Both have booming businesses, and Bob in particular sells out of iron scrap on a routine basis. Bob deploys a contract where once his iron scrap inventory reaches a certain range, he automatically sends an order out to Eric for X lbs of iron scrap at Y ether per ton. Eric agrees to the arrangement and accepts Bobs payment in ether right away. Eric gets to work right away and starts fulfilling Bobs order. Eric can exchange his ether at a local exchange online for Yuan for a tiny fee and itll be processed instantaneously. Whether Eric decides to hold ether or convert to Yuan is his choice, but either way he can now put this capital to wor Continue reading >>

Does The Ethereum Walled Download The Whole Blockchain To My Computer? Where Is It Downloaded To, And What Is The Size (as Of April 2017)?

Does The Ethereum Walled Download The Whole Blockchain To My Computer? Where Is It Downloaded To, And What Is The Size (as Of April 2017)?

Does the Ethereum walled download the whole blockchain to my computer? Where is it downloaded to, and what is the size (as of April 2017)? If you download an Ethereum wallet like Mist , then by default you are running the full client, which will download the entire blockchain. The default location of this chain in Windows 8 is: C:\User\\AppData\Roaming\Ethereum\geth\chaindata. As of April 19th, 2017, my blockchain size is 23.5 GB total. If you dont want to download a full client, I would highly recommend Metamask.io . Its a client that will create a wallet for you, but wont download the blockchain. It will also allow you to interact directly with Dapps. Ya, if you want to sync to the mainnet with your Ethereum Wallet you must download the entire blockchain. It saves each block into a folder called chaindata in a location that you specify. If you are a developer you can use APIs like Infura and Web3 to interact with the main Ethereum chain. You also have the option to connect your Ethereum Wallet to the testnet or to a private Ethereum blockchain that you can configure using Geth. Both of these options allow you to develop on a test chain to test applications, without needing to download and store the entire blockchain. You can use this walkthrough to connect an Ethereum blockchain locally , and this walkthrough to connect your Ethereum blockchain using AWS . Continue reading >>

How To Download And Install Ethereum Wallet And The Blockchain ( Geth Aka Go Ethereum ) : Ethereum

How To Download And Install Ethereum Wallet And The Blockchain ( Geth Aka Go Ethereum ) : Ethereum

(How you are supposed to know how and where to grab that ordinarily, I don't know). Now Geth, or Go Ethereum, is a funny program. Do NOT open it. Do NOT run the program after install, simply install it, and let it be. (3) Skip to step 4, or if you already opened Geth, do the following: Navigate to : C:\Users\YOURNAME\AppData\Roaming\Ethereum And delete Geth, but leave Keystore (this is the Wallet - make a copy of this if you even think you may accidentally delete it). NOTE : This is how to transfer and safeguard your Ethereum Wallet. (4) So rather than Open Geth via Icon, you must access it via command line to use it properly. On Windows 10, do the following: windows + r -> type cmd -> enter -> type cd c:\pathtogeth\ OR type " CD C:\Program Files\Geth " - Enter This is the command prompt area. If you type something funny, a list of commands pops up, or " C:\Program Files\Geth>geth help ". If you type: Then that will launch Geth in Fast Mode (Download and process after), and will utilize up to 1 Ram (default is 10% of 1 Ram - Alternatively you could say 2048 or something). Doing this will download like 2 million blocks an hour on fast comp with cable internet. After a few hours, the bulk of the process should be complete, at which point you'll receive a block a minute. More explanation regarding Step 3 and default settings: If you run Geth 'as default'', then essentially it can never complete as it only allocates 10% of 1 Ram AND verifies each and every block on each download all the way through (so with Fast, you are only verifying the 'top half' of the block chain, while downloading it in total, BUT under the default setting you download and then reverify each block, then download another, then reverify each block, etc... ). Continue reading >>

Parity

Parity

Parity comes with an extensive, easy-to-use, in-built Ethereum Wallet and app environment that can be accessed via your Web browser of choice. Account, address book and multi-sig management Hardware and electronic cold wallet support Develop smart contracts and decentralised applications with Parity or build protocol extensions. Check out our Wiki , Gitter and Bug Bounty Program Parity is designed for mission critical use in enterprise environments. Parity has a number of features that make it perfect for deployment in private or consortium setting. The Parity Ethereum client is built from the ground up to the highest standards of software development. Tuned, hand optimised use of low-level Rust language JITEVM turbocharges execution of complex contracts Multi-level in-memory caching Memory and concurrency safety guaranteed by Rust language Actor-based modularity ensures maximal resilience Unit tested and peer reviewed from day one Standard, JSON-based, chain-specification format EVM plugins allow native speed contracts Actor-based modular architecture with IPC Rust's ownership tracking facilitates minimal memory footprint Cache management gives fine control to user State-trie pruning minimises storage footprint 1-line install on Mac and Linux Docker images available Library APIs are fully documented 100% consensus test conformant implementation Complies with standard devp2p network protocol Fully compatible with JSON-RPC API Stable is the most mature and tested software Beta comes with additional features and better performance but may yet have quirks and issues to be fixed Nightly is a cutting edge software build but comes with a strong caveat against using it for managing anything of value From RLP and the Trie to the network subsystem. We aim for our unit tests to Continue reading >>

Heres How I Built A Private Blockchain Network, And You Cantoo

Heres How I Built A Private Blockchain Network, And You Cantoo

Heres how I built a private blockchain network, and you cantoo Nothing helps understand blockchains better than building oneyourself This is PART-4 of The Product Managers guide to the Blockchain series! If you somehow landed on my publication for the first time, Welcome! I recommend you start from part 1 , and then read part 2 and part3 before reading this post. However If you are the explorer type, read on! (Update: Heres the latest part 5 of the blockchain series ) In Part 3 of this series, we looked at the mechanics of Ethereum and also talked about the concept of Ethereum Accounts, Smart Contracts and Gas the fuel that helps all these pieces to work together. Its been a lot of reading so far, but while you can read all the blockchain content available on the internet, nothing helps understand blockchains better than building one yourself. So thats what I did. You can simply follow this post and build a little prototype to see how everything weve talked about so far comes together. Here is what we will accomplish in this post, Weve seen this before , but basically the Ethereum blockchain network is simply lots of EVM (Ethereum Virtual Machines) or nodes connected to every other node to create a mesh. Each node runs a copy of the entire blockchain and competes to mine the next block or validate a transaction. Whenever a new block is added, the blockchain updates and is propagated to the entire network, such that each node is in sync. To become a node in the Ethereum network, your computer will have to download and update a copy of the entire Ethereum blockchain. To achieve this Ethereum provides tools that you can download, connect to the Ethereum network with and then interact with it. These are: Geth if you have experience with web development and are interested i Continue reading >>

Downloading The Full Ethereum Blockchain Takes A Fewweeks

Downloading The Full Ethereum Blockchain Takes A Fewweeks

Downloading the full Ethereum blockchain takes a fewweeks Recently I have been working with Ethereum and analyzing its blockchain. I have needed transaction traces (e.g. what EVM instructions are executed by a transaction) for the research problem Im working on. geth, Ethereums most popular (Go) implementation, supports a method called traceTransaction which computes transaction traces. All one needs to provide to the method is the transaction hash. By default, the output trace includes the state of the stack, memory, and storage after execution of each EVM instruction; however traceTransaction also provides a very flexible, JavaScript-based tracing mechanism to retrieve all sorts of other information. For example, one can obtain the current context (storage account) in which a transaction is executing, or its current depth. See more about the traceTransaction function here . While traceTransaction is useful method for analyzing transactions on the blockchain, I quickly learned that it order to execute this method, I needed the FULL blockchain. When running a geth node, there are two different ways of syncing it: via a fast sync or a full sync. For most people, a fast-synced node suffices if they want to mine blocks, exchange Ether, or publish smart contracts on the blockchain. At a high level, fast syncing works by pruning away old states in the blockchain, so that the blockchain occupies less space and database lookups are faster (there is a StackExchange thread discussing the difference between these two options, and a GitHub thread that describes fast syncing in more depth).A fast sync supposedly completes in a matter of hours, and takes roughly 30GB of space (at the time of this writing). However, since traceTransaction may need to look up old states in order to c Continue reading >>

Can I Download The Whole Blockchain From Somewhere?

Can I Download The Whole Blockchain From Somewhere?

Bitcoin used to offer sharing/downloading a bootstrap.dat which contains the whole blockchain. Are there alternatives to getting it trickling through the peer-to-peer network? Can I just download it somewhere? Wouldn't this be ideal for distribution via torrent? If so, how do I import it into the Ethereum client? My client would still be validating this data (can it?), and it is all signed and proof-of-worked, so there is no real security problem here, is there? well for instance on github ethereum, if they don't want to provide boostrap file themselves perhaps they could publish say the hash of the first N blocks so that when you download those blocks from another third party that the hash matches ? user93019 Jun 5 '16 at 16:41 Strongly agree. Is there any security reason why there could not be standardized bootstrap files with published MD5 and/or PGP checksums? Seems like it would save a lot of time & Ethereum network bandwidth. gosmond Mar 28 at 3:55 If you want to download the blockchain data from an external source that is up to you, but that does come with risks of the data being corrupted or sabotaged in a way to compromise your machine or Ethereum wallets. So the "security issue" is that you are trusting an un-trusted, non-Ethereum network source when you download the file. As long as you trust the source or want to take that risk your Ethereum client will still validate the data you downloaded as correct for the Ethereum network you connect to (mainnet, testnet [Morden], etc.). That all being said, I do not know of any third party sites that offer the Ethereum blockchain as a download. If you were to create such a site, it is possible to export and import the Ethereum blockchain data using the commands below Continue reading >>

Epazz Zenapay Blockchain Bitcoin Ethereum Wallet Has Been Downloaded More Than 25,000 Times Since Launch On The Play Store, Helping To Improve Its Ranking

Epazz Zenapay Blockchain Bitcoin Ethereum Wallet Has Been Downloaded More Than 25,000 Times Since Launch On The Play Store, Helping To Improve Its Ranking

The company has been receiving feedback on the ZenaPay Bitcoin wallet. Among the feedback were requests to support earlier Android versions. Our February 20th update thus added support for older versions, such as Android 5.5. The company now has the data it needs to understand the user acquisition cost and time period needed to reach a million active users. Reaching a million active users is critical to monetizing a mobile app. Its user base is the key to growing ZenaPays business. The company has been adding other blockchain apps related to Bitcoin to its app portfolio. Below is a list of blockchain apps from Epazz you can download today. Epazz CEO Shaun Passley, PhD, stated, We have growing number of blockchain apps and understand how to gain users. It will help us with Cordtell and the Social Media app. ZenaPay is developing an iPad point of sale (POS) app to integrate with the Merchant App. Epazz will release the POS version of the Merchant App. The new system has been designed to seamlessly integrate with merchants store flow. ZenaPays development team is also working on a vendor payment solution that will allow merchant businesses to pay vendors and employees using cryptocurrencies. Future features will include the following: ZenaPay is being developed to solve a major problem in high-risk industries: getting paid. Traditional banking systems do not allow high-risk industries to access their payment systems. ZenaPay offers a cutting-edge payment solution that gives consumers a way to buy items online or in stores using Bitcoin. The new Bitcoin payment software will allow consumers to use digital currency to make online or in-store purchases with ease. The process will also be anonymous because all transaction details are encrypted through Bitcoin, which will enab Continue reading >>

Connecting To The Network

Connecting To The Network

Distribution of client implementations on the current live network - Realtime stats on EtherChain. Public, private, and consortium blockchains Most Ethereum projects today rely on Ethereum as a public blockchain, which grants access to a larger audience of users, network nodes, currency, and markets. However, there are often reasons to prefer a private blockchain or consortium blockchain (among a group of trusted participants). For example, a number of companies in verticals, like banking, are looking to Ethereum as a platform for their own private blockchains. Below is an excerpt from the blog post On Public and Private Blockchains that explains the difference between the three types of blockchains based on permissioning: Public blockchains: a public blockchain is a blockchain that anyone in the world can read, anyone in the world can send transactions to and expect to see them included if they are valid, and anyone in the world can participate in the consensus process the process for determining what blocks get added to the chain and what the current state is. As a substitute for centralized or quasi-centralized trust, public blockchains are secured by cryptoeconomics the combination of economic incentives and cryptographic verification using mechanisms such as proof of work or proof of stake, following a general principle that the degree to which someone can have an influence in the consensus process is proportional to the quantity of economic resources that they can bring to bear. These blockchains are generally considered to be fully decentralized. Consortium blockchains: a consortium blockchain is a blockchain where the consensus process is controlled by a pre-selected set of nodes; for example, one might imagine a consortium of 15 financial institutions, each of Continue reading >>

How Long To Download Ethereum Blockchain?

How Long To Download Ethereum Blockchain?

How long to download Ethereum Blockchain? So I downloaded the Ethereum-Wallet(MIST) because I want to get into altcoins as well as Bitcoin. When I started the Wallet, it started downloading the Ethereum Blockchain. This is more then 24h ago at it seems the closer I get to finish downloading the whole thing the slower the download I mean it's getting ridiciulous with this massive blockchain downloads and the wiaitng time, especially because I download around 15GB so far. 15GB I could download in less than an hour so why does this take so long with these blockchains I thought its like a p2p download, And o another note the number of total Blocks seem to be changing while downloading. I wouldn't have been surprised if it would grow bigger because of more transactions in the blockchain etc. but it is jumping frim 1,480,000ish to 1,580,000ish Blocks... back and forth... I'm relatively new to the cryptocoin-world so forgive me if some of these questions seem ignorant or naive. 12+ exclusive games The Bitcoin Casino by Primedice Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here. A few hours for me. But I did that a few months ago now. It takes very very long time. very bad* must wait hours*: is not future. i am in the hopes some thing comes back from the future for betterment of online cryptographic currency! () So I downloaded the Ethereum-Wallet(MIST) because I want to get into altcoins as well as Bitcoin. When I started the Wallet, it started downloading the Ethereum Blockchain. This is more then 24h ago at it seems the closer I get to finish downloading the whole thing the slower the download I mean it's getting ridiciulous with this massive blockchain downloads and the wiaitng time, Continue reading >>

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