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Ethereum Wallet Chain Data

Ethereum/mist - Gitter

Ethereum/mist - Gitter

@pydo 0.8.2 wallet uses a Geth client that is pre-hardforks. You need both wallets to be at least 0.8.8, 0.8.9 preferred. I doubt anyone is even on the 0.8.2 blockchain, since that is the one that suffered the DDoS attack and is near impossible to sync, much less being able to transact with that chain. Plus 0.8.2 wallet was using Geth 1.4 series client that has completely different blockchain structure than the Geth 1.5 series released after the hardforks. Does a Ledger Nano S work with Mist? (Or Ethereum Wallet?) @agnewpickens thanks I upgraded my wallet from 0.8.1 -> 0.8.9. It seems to be synching properly now I was having trouble synching a new 0.8.9 wallet earlier, but I was using a VPN. I'm assuming that can cause connection issues Is it normal that my .ethereum/chaindata is over a 114gbs? I have 2 v0.8.9 etherwallets that are synched. But one has 114.7gb if geth/chaindata while the other has 78.2gb. Is it possible that the former wallet has garbage data? And if so could I safely delete the chain data and have it resynch/ Continue reading >>

Firing Up The Light Ethereum Blockchain

Firing Up The Light Ethereum Blockchain

Software developer and co-founder of Blockchain Manchester. Firing up the light Ethereum Blockchain If you have ever tried to get the Ethereum Blockchain synchronised on you local machine it can be slow and frustrating. You start googling and all the information is either old and/or fragmented. You may eventually piece it all to together but it is harder than it should be. Even the official documentation is often out-of-date. I realise this technology is moving fast but I believe it is essential to make it as simple as possible to get interested parties up and running. The barrier to entry should be as low as possible, people want to play with Ethereum not wade through endless old forum posts. Working with the Ethereum Wallet in lightmode As of October 2017, the Ethereum Wallet (used to send ether about and deploy smart contracts) and geth (the official Ethereum client written in the Go programming language) have matured to a level that you should be able to get up and running a few hours (or even quicker) if you are happy to run in light mode. As geth 1.7.x has the ability to use the LES protocol v1 . The Light Ethereum Subprotocol (LES) is the protocol used by light clients, which only download block headers as they appear and fetch other parts of the blockchain on-demand. The good news is Light Client integration (from v0.9.1 onwards) is now built into the Ethereum Wallet . Light syncing time decreased by an order of magnitude, compared to running a full node. Same as for storage requirements. Some users may still want to sync the full chain if they require all the chains data locally. Also, remember light mode is relatively new so may have a few kinks to be ironed out. In summary , Full Sync: Gets the block headers, the block bodies, and validates every element fro Continue reading >>

Synchronize Ethereum Using Geth Fast

Synchronize Ethereum Using Geth Fast

Home Notes Synchronize Ethereum using geth fast Ill show you a trick that at least seem it worked for me of how to synchronize the Ethereum Wallet faster and is to execute a geth command, Ill do this using the UI wallet in Linux Mint and how to do it in windows as well. Before we start lets take a look to some information so you understand the process better: Argument fast:This flag enables fast syncing through state downloads rather than downloading the full block data. This will also reduce the size of your blockchain dramatically. This can only be run if you are syncing your blockchain from scratch. Argument cache:Megabytes of memory allocated to internal caching (min 16MB / database forced). Default is 16MB, so increasing this to 256, 512, 1024 (1GB), or 2048 (2GB) depending on how much RAM your computer has should make a difference. I recommend to use 1024. If you already start to sync without using fast Ill show you how to start from scratch without doing any major change to the wallet (i.e. delete your wallet). You dont need to install or get geth, if you already installed the wallet it uses geth in back-end you just need to know where it is located and Ill show you later. You must have mist or eth-wallet installed and ran it at least once (doesnt matter if never was fully sync). 1.- Open the home folder then you must have shown the hidden folders, if you dont know how to show the hidden folder take a look in here Show hidden folders in Linux Mint Then we are going to work with these two hidden folders: .ethereum: this folder contains data related to the wallet we installed, here is where the blockchain data is located and we are going to clean them all, yes we are going to delete and burn it all. .config: this is a common folder among other application and also Continue reading >>

Exceptionally Large Ethereum Blockchain Size

Exceptionally Large Ethereum Blockchain Size

Exceptionally Large Ethereum Blockchain Size I came to notice that my hard drive which is dedicated to blockchains reached maximum capacity and after a little investigation, I discovered that my "blocks" folder in my Ethereum directory weighs 74.5 GB (80,050,787,860 bytes) for 840,984 Files which seems extremely odd. There's also an "extra" & "state" folder which additionally weigh ~3.5 GB and ~13GB respectively. Cryptominingblog created a post a few hours ago stating that Ethereum's directory is about 16 GB so this only adds to my confusion. I invoke the following command to launch eth via a batfile [start eth -d Q:\the.MlNE\Ethereum] within Mist's subdirectories followed by Mist a few seconds later which is of the latest build. My Ethereum folder (C:\Users\\AppData\Roaming\Ethereum) is 10.4 GB, using the Mist wallet in win7. Almost all of it comes from the chaindata folder from inside. Wow, that's already messed up in itself. But it's even crazier when you consider Ethereum's launch wasn't even 10 months ago . Dash was released over 2 years ago and its blockchain is only 1.8 GB as of this writing. Just sayin'. Guess distributing a glorified calculator all over the world is taking its toll. Nonetheless ETH is gonna have a future on one datacenter or the other... Quote from: ICOcountdown.com on May 10, 2016, 09:48:56 PM It is because all smart contracts are stored in the blockchain. I did recently create a wallet which to my knowledge is a contract of very basic form. I do however remain a little reluctant to believe that my wallet accounts for over 70 GB of data. damn i need to download the wallet but if ur saying its so big i cant. any other wallets for ETH like multibit? or online secure ones? damn i need to download the wallet but if ur saying its so big Continue reading >>

How To Delete Geth Chaindata & Resync

How To Delete Geth Chaindata & Resync

Home Guides Clients How To Delete Geth Chaindata & Resync Go-Ethereum (Geth)is one of the many Ethereum clients . It is developed by developers from the Ethereum Foundation . The core features of Ethereum web 3.0 stack are expected to arrive at Geth first. In this guide, the procedure for re-syncing Gethon Windows will be shown. I am usingGeth 1.5.4 (latest stable version as of 30 Nov) on my Windows 10 machine. Note: If you have not installed Geth, please install Geth using the instructions here: How To Install Geth In Windows . Resync of the blockchain has the benefit of reducing the amount of disk space used by Geth. The deletion of chaindata folder and resyncing of the blockchain will not be needed once Geth has employed state-tree pruning which will automatically archive old blocks to reduce disk usage. Until Geth has included this functionality, the regular deletion of chaindata folder and resyncing of blockchain is recommended to keep the disk usage at minimum. The chaindata folder is located atC:\Users\\AppData\Roaming\Ethereum\geth\. Yes, delete the whole folder. Do not worry. Your Ethereum account will NOT be deleted (they are stored in another location). Step 3: Run Geth with the -fast -cache=1024 flags If you do not know how to set the flags, please usethe instructions here (Under Step 4): How To Install Geth In Windows . Step 4: Wait for Geth to complete the fast sync Fast sync is completed when Geth starts to import 1 block at a time. 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 Can I Find My `chaindata` Folder?

How Can I Find My `chaindata` Folder?

geth (used in the Ethereum Wallet) saves its internal states for the main network in the chaindata directory. You can find it in the: For OSX there are two library folders. You will need to enable hidden folders to fine the Library referenced above which is found in HD/Users/{your name}/Library and is a hidden folder Albert Renshaw Dec 3 at 4:42 To view hidden folders run this in terminal defaults write com.apple.finder AppleShowAllFiles YES then relaunch finder (option+control click finder icon and select relaunch) Albert Renshaw Dec 3 at 4:43 When you first launch Ethereum-Wallet it will show the splash screen. Shortly after the splash screen will show a LAUNCH APPLICTION button. Click this button to see the full UI. If you are fully synced already it may skip straight to the full UI Once that is open go to the Accounts menu > Backup sub-menu > Accounts menu-item. The UI for your file explorer will differ by OS, but you should see a folder that contains folders like this, in particular it should contain a chaindata folder: Side-note: While you are here you should backup the keystore folder. Details about this can be found at How do I backup my ether accounts? . Be sure to save your passwords as well! 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[ edit ] 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. How to recover from slow syncing?[ edit ] 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: Linux - $HOME/.ethereum/geth OS/X - $HOME/Library/Ethereum or $HOME/Library/Ethereum/geth Windows - %APPDA 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 >>

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 >>

Parity Wallet Hacker Cashes Out $90,000 In Stolen Ether

Parity Wallet Hacker Cashes Out $90,000 In Stolen Ether

Parity Wallet Hacker Cashes out $90,000 in Stolen Ether Roughly $90,000 in stolen ether confiscatedas a result of a bug ina popular ethereum wallet software service yesterday have been cashed out, blockchain data shows. As reported by CoinDesk, a total of 153,000 ethers were drained on July 19 due to a security bug in multi-signature wallet software offered by the startup, UK-based Parity Technologies. In a blog post yesterday, Parity went so far as to warn users that the bug was "critical," advising them to take steps to safeguard their funds while the issue was resolved. However, the stolen funds continue to move. As of press time, 70,000 ethers have exited thehacker's address in seven consecutive transactions, each worth 10,000 ethers. Data further showsthe first transaction (which through two subsequent addresses ), successfully cashed out 400 ethers via a cryptocurrency exchange service called Changelly. The price of ether around the transaction time was around $220, making an outflow worth nearly $90,000. Changelly subsequently said in a Reddit thread that it has blacklisted the hacker's root address, but that the amount that has already been exchanged is permanently gone. The startup's involvement is also notable, as it provides a service that matches buyers and sellers of cryptocurrencies with exchanges, calculating the best rates for the user. As a result, it does not hold funds or take customer information. The startupfurthersaid the hacker used theTor network to connect to its service, meaning it was not able to trace the IP addressesor the fiat currencies the funds were exchange for. "It's a dead end," Changellyposted on Reddit. So far, the commerce platform Swarm City and smart contract platform ternity , both confirmed the loss of over 120,000 ethers from Continue reading >>

Ethereum Wallet Does Not Synch (downloading Chain Structure Without End In Sight) #2749

Ethereum Wallet Does Not Synch (downloading Chain Structure Without End In Sight) #2749

Version: `0.8.10`OS & Version: osxNode type: `Geth 1.6.6 (Go)`Number of blocks synchronized: 4010159 I'm not a techie but wanted to try and download and synch a wallet to start to learn. It's been three days and the wallet has not synched. The "downloading chain structure" never ends. What options do i have? It usually does take a few hours. But if it's taking too long, you want to check other things like - is a firewall/antivirus blocking anything, are you behind a proxy and can you try on another network, any specific issues shown in the log file? Hey Sathish - i read your earlier responses on the same lines. No firewall/antivirus, no proxy, tried two networks too. No log file issues that i can see. The issue is that it's been 3 days and the chain structure just keeps on growing, just never ends. Same here. It looks like this isn't a priority for fixing or they just can't repro it. It's going to be up to us to fix it or abandon MIst/Wallets in Ethereum. I'm on my third day of trying to download the block chain for my wallet. I'm on Windows 10. I have no firewall/proxy/network issues. Here's the last entries in the log when it's stuck (nothing unusual except the retry): INFO [08-12|12:55:12] Imported new state entries count=1 flushed=1 elapsed=0s processed=19798 pending=3054 retry=1 duplicate=0 unexpected=2 INFO [08-12|12:55:14] Imported new state entries count=384 flushed=420 elapsed=114.308ms processed=20182 pending=3124 retry=2 duplicate=0 unexpected=2 INFO [08-12|12:55:15] Imported new state entries count=384 flushed=404 elapsed=22.045ms processed=20566 pending=2876 retry=2 duplicate=0 unexpected=2 INFO [08-12|12:55:17] Imported new state entries count=384 flushed=386 elapsed=92.248ms processed=20950 pending=2919 retry=264 duplicate=0 unexpected=2 It appears to ge 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 >>

The Ethereum-blockchain Size Will Not Exceed 1tb Anytime Soon.

The Ethereum-blockchain Size Will Not Exceed 1tb Anytime Soon.

The Ethereum-blockchain size will not exceed 1TB anytime soon. Before diving into this article, please read the two disclosures about my involvement (1,2) and the one on data accuracy (3) at the bottom of the article. At least once a month someone posts a chart on r/ethereum predicting the blockchain size of Ethereum will soon exceed 1 TB. I want to take that chance to clean up with some stories around the Ethereum-blockchain size in this article and try to explain why this chart is technically correct, but not the full picture. Let's have a look at this chart first. It shows the complete data directory size of an Ethereum node (red), Geth in this case, and a Bitcoin node (blue), probably Bitcoin-Core , plotted over time. While the Bitcoin graph is moving slightly upwards in a seemingly linear inclination, the Ethereum graph reminds the reader of an exponential growing slope. On Blocks, Block-History, States, and State-History Users accusing Ethereum of blockchain-bloat are not far off with their assumptions. But actually, not the chain is bloated but the Ethereum state. I want to examine some terminology from the Whitepaper before proceeding. Block. A bundle of transactions which, after proper execution, update the state. Each transaction-bundling block gets a number, has some difficulty, and contains the most recent state. State. The state is made up of all initialized Ethereum accounts. At the time of writing, there are around 12 million known accounts and contracts growing at a rate of roughly 100k new accounts per day . Block-History. A chain of all historical blocks, starting at the genesis block up to the latest best block, also known as the blockchain. State-History. The state of each historical block makes up the state history. I will get into the details on t Continue reading >>

Change Path For Ethereum Wallet Folder

Change Path For Ethereum Wallet Folder "chaindata"

Hello, I just started out with Ethereum by downloading/installing the Ethereum Wallet from the Website. (Win7 64bit) First of all I am not sure about the category this question falls into, so I am sorry if I am in the wrong section of the forum... I need to know how to change the standard path to the 'chaindata' folder for my wallet since I do not have enough free space on my system partition (C:) and could not find any (obvious) settings/options/... in the UI of the wallet. I need to move the regular main folder (C:/ ... 'User'/Appdata/Roaming/Ethereum) or just the chaindata folder (?) to another drive since these (blockchain) files would just fill up my system partition. Any ideas on how to do that? I would appreciate any help or tips. Thank you. Continue reading >>

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