Questions tagged [synchronization]

Syntonization is the process where your node / client (geth, Ethereum Wallet, etc) receives the most up to date data from the Ethereum blockchain.

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Lost ether: wallet on some other chain

Yesterday I decided to move my Ethereum coins to my coinbase account from my PC based Ether wallet from Ethereum.org . I had 107ish coins. I sent 1.2 to my coinbase address as a test and they arrived ...
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Ethereum wallet shows “no accounts yet” and 0.00 balance [duplicate]

I last used Ethereum wallet in June or July this year. Yesterday I upgraded on macOS to 0.8.7. It is syncing very slowly; at this rate it will take a week to finish the remaining 189,000 blocks. In ...
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3answers
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Geth is stuck syncing

I'm trying to mine using Geth. Right now, it's syncing and showing: { currentBlock: 3999975, highestBlock: 4000109, knownStates: 16329, pulledStates: 1739, startingBlock: 3999975 } The ...
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1answer
545 views

Not receiving wei from Morden faucet

I am new to Ethereum. I tried getting some wei from the faucets referenced here, in particular, from zerogox and morden.ether.camp. It says on these websites that I have been sent wei (see e.g., ...
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1answer
748 views

How to interact with Smart Contract in private network with 3 nodes using Mist?

I'm looking for a method to interact with a smart contract deployed from the official Ethereum wallet. My client is Geth,and I've synchronized 3 nodes. How is possible to recall a simple method of ...
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What is the difference between “geth” and “geth --fast”? [duplicate]

EDIT : I hadn't see the other question but this one ain't a duplicate because I'm asking here, precisely, if the state differs and if it does, what are the implications. The answer to that question ...
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1answer
750 views

Full node sync only preserve the last 128 history states

While researching on the different sync modes and their behaviors, I learned that geth full sync will replay all transactions from the genesis and preserve all history states, while fast sync will ...
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1answer
2k views

Synchronisation failed, dropping peer; err=“retrieved hash chain is invalid”; message loop

I have clique private proof-of-authority chain. I have updated all signer nodes' (currently I have 3 signer nodes) geth version to minimum Version: 1.8.16-stable. Also I have updated the other node ...
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1answer
362 views

Can the Merkel trie state entry download period of a fast sync extend between geth runs, and how many trie state entries currently exist?

When initial synchronization (i.e., from block 1) is performed with --fast, both blocks and chainstates are downloaded separately. In my current ongoing download (and apparently others) full ...
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1answer
137 views

Syncing events on Database - Dealing with blockchain reorganization

My Dapp relies on live events synchronization on a centralized database. There is always a server side script polling the blockchain for new events, parsing then and do the corresponding operations on ...
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1answer
974 views

Will I be able to mine having my whole blockchain imported using the --fast flag? (Geth)

Having the same problem as in this question: Corruption on data-block while synchronising I restarted my synchro on the fresh/empty data directory using the --fast flag. According to this answer: What ...
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3answers
495 views

Is it possible to check that does client's node's block number matches with the blockchain's best(latest) block number?

I have a sorted linked list that contains around 1000 items. When I receive a new item my goal is to push the item to the list keeping the sorted order. So if I receive very small value, I am required ...
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2answers
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How to fix “address already in use” error when attempting to launch geth console?

I'm downloading the chain and I've processed more than 2 million blocks so far. I'm trying to attach to the geth console to view the syncing status, but I've tried typing geth console in another ...
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3answers
17k views

How can i tell if geth is done running?

Well i am new trying to mine and i did the "C:>geth --rpc" and its still going how will i know when its done? i did all the steps leading to this but my pc just keeps running the INFO [05-18|23:32:...
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1answer
6k views

Optimal sync mode for running an ethereum node that can process transactions

I need to run a local ethereum node, I've downloaded mist wallet but I've had some issues. I have to redownload the whole blockchain again, and I noticed that the problems I had could be related to ...
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2answers
4k views

Status of Ethereum Sync using Geth for Beginners

I am new to ethereum and right now getting the ethereum blockchain using geth with syncmode=fast and cache=5120 It's been quite some time the sync being running (about 24 hours) and still the process ...
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1answer
2k views

Parity warp syncing slow

This is the first time I try to install an Ethereum client and I'm trying with Parity v1.6.6 on Arch Linux (sudo pacman -S parity). I read that the --warp option allows to save time not syncing the ...
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3answers
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Node on private blockchain with custom genesis file not mining nor synced

I am running two nodes over a private blockchain with a custom genesis file that uses the new "config" recommended here. However, aside from the random handshakes with external nodes I am trying to ...
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0answers
536 views

Mist started re-syncing and ethers are gone

I downloaded the blockchain with geth --fast --cache=1024 option and size of my blockchain data after download of 2412706 blocks was around 10.9GB. I imported my accounts to keystore files and ...
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1answer
413 views

Unable to deploy contract on public chain

I was trying to deploy a contract to public ethereum network using Mist. I was able to send transaction successfully but my transaction is get no confirmations. It has been around 45 minutes and my ...
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1answer
585 views

why is my connected peers so few and blocks syncronising so slow even it stops

it took so much time to do the syncronising but still not completed, I want know if the syncronising is always this slow, or is there some way to make it quicker?
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1answer
1k views

Can I send Ether with Mist without syncing it to the current best block?

Can I safely send Ether after skipping the peer research in Mist?
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1answer
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Why do Ethereum clients download the entire blockchain?

Lets say that I am not interested in mining but instead just interested in one contract and its latest state. Why shouldn't my client discard all the other state on initiation, and also ignore any new ...
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1answer
178 views

Ether wallet stuck while syncing. Can I upgrade without syncing? [duplicate]

My ether wallet (0.5.2) is stuck on block 2,420,853 while syncing. Can I upgrade to 0.8.1 without syncing? My goal is to convert my Dao tokens to ether. So I need to update my wallet. Eeek! ...
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3answers
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How to sync pyethapp (python ethereum client) with the mainnet?

I just installed pyethapp. However, I'm unable to sync the blockchain. Here is what I get when I run the client: 0 ✓ user@host ~ $ pyethapp run Failed to import scrypt. This is not a fatal error but ...
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2answers
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Resyncing and deleting chaindata directory

I'm about to do a resync of the blockchain but as I was deleting my chaindata directory from: ~/Library/Ethereum/chaindata I noticed there was also another chaindata directory located here: ~/...
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3answers
171 views

How do I keep my Ethereum Wallet synchronised after the initial synchronisation

I have successfully installed and synchronised Ethereum Wallet and it has correctly brought in my test Ether purchase. How do I resynchronise to ensure more current transactions are recorded on my ...
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1answer
1k views

How can I find ETC nodes (to pass their enode URI to --reserved-peers) because the classic chain no longer syncs through tor?

I was syncing the ETC chain on parity through tor. Everything worked fine. I got to block 3,000,001. Everything stopped, I realized there was a hardfork. I updated the software (ETH worked fine), but ...
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1answer
2k views

Windows Parity syncing very slowly

I installed Parity for Windows recently with the latest version 1.4.3-beta. The syncing was going fast to start but now on 2,400,000 blocks is goes extremely slow to the point of doing only a few ...
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2answers
531 views

Ethereum block download limit

I've been syncing the ethereum blockchain for over a week now and it has stopped downloading blocks but continues to download structure. When I restart it, it resumes downloading blocks but will only ...
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0answers
357 views

Unable to synchronise with a remote peer

I am running a private network with two geth instances one on my machine and other on an AWS server using the same Genesis file. I am also using a networkid flag to differentiate my private network. ...
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1answer
559 views

Geth syncing for 24 hours, still not done [duplicate]

I downloaded Geth 1.6.6 and ran it to sync the blockchain. It's been 24 hours, the chaindata folder is 12.4gb and it's still going. When should I expect it to be done? Is this normal (the website that ...
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1answer
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web3.eth.getBalance returns always zero

I have an ether account (whose details I prefer not to disclose here). I can confirm in etherchain.org that it has the correct amount of funds. I can also check that the funds were transferred in ...
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1answer
237 views

Running Wallet 0.8.6 with Parity 1.3.8 [Low # peers, Low speed] [duplicate]

Wondering why my blocks are processing so slowly. Peers ranging from 0 to 10. About 45,000 blocks behind... Processing 1 block about every 5 seconds.
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1answer
127 views

Why is Geth importing the same block multiple times?

I have this geth node that run in testnet and a program(worker) that will read the block every second. I notice sometimes, the geth imported segment chain with same block number but different hash, ...
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Why is my node taking so long to sync? [duplicate]

I downloaded the ethereum wallet, and its taken a few days yet its still syncing. Im on block ~701,000 thus far. Is something wrong? Is it supposed to take this long?
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1answer
42 views

Different synchronization types

What are the different synchronization types for an Ethereum node? Which of them are client-specific (Geth, Parity)?
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1answer
639 views

Fatal: Error starting protocol stack: missing block number for head header hash

I didn't check on the running Geth instance and when I executed a function that logs everything in the Blockchain, I had an error that the port I was listening to wasn't responding. I figured out that ...
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My node lags behind, and more and more so [duplicate]

A few months ago, I had no problem to synchronize my Debian node. Now, I lag behind and I cannot catch up. There are long delays between blocks Here, a gap of several hours: I0507 03:40:13.321969 ...
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eth.getBalance(eth.coinbase) = 0, node/client not fully synced yet

I just started to get my fingertips wet with Ethereum and Dapps. After receiving some ether on Ropsten to test with: https://ropsten.etherscan.io/address/0x05c86fc0ec0b80715f1cbc2fa96e86ba18e2eb90 I ...
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Can't send when geth started with no peers

I am trying to follow these instructions to send eth without syncing on my pc. ./geth-1.9.0 --maxpeers 0 console Then TX={ from: FROM, to: TO, value: VALUE, nonce: NONCE, gas: GAS, gasPrice: ...

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