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Questions tagged [parity]

Parity is an Ethereum client, written from the ground-up for correctness-verifiability, modularization, low-footprint, and high-performance. To this end, it utilizes the Rust language, a hybrid imperative/object-orientated/functional language with an emphasis on efficiency.

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Accounts not getting the balance right

I'm trying to get the balance of a set of accounts using Parity RPC and web3.eth.getBalance. The problem is that, some accounts are returning 0 even though they have balance. For instance: https://...
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How do newHeads and event subscriptions behave on past reorgs?

Based on the geth documentation, I understand that a subscription on both newHeads and logs will emit all new heads and events that come from a reorg. However, I couldn't find what the behaviour is ...
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Parity node failing

I am trying to setup a dev parity node, but it is failing with the error, Loading config file from config.toml. Cannot create a file when that file already exists. (os error 183) My config.toml ...
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Parity: if I don't include --no-ancient-blocks will it download blocks all the way back to genesis (after the initial sync)?

In other words, if I have less than 1.5TB to play with, is --no-ancient-blocks essential?
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My parity node ran out of space- I have over 100GB free and am using warp-barrier. Is this normal?

Error message below. This doesn't seem right, I'm only downloading a little over 20k blocks (which is the whole point of warp barrier), how can this really need more than 100GB? Just to clarify, it ...
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38 views

Slow sync since Constantinople reason?

Noticed two days ago my live ETH node has not been able to keep up with the network. It is a fast VPS that always was fine until two days ago. Running 2.3.5-stable of Parity. Block generation is ...
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Subtraces of delegatecall in Parity trace

I'm investigating transactions using Parity trace which provides useful data over a transaction flow. Among this data is the Subtraces field which allows me to understand how many sub-calls each ...
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Is there a way to launch an in-memory Parity private chain?

Is there a way to launch a all-in-memory Parity private chain for purpose of, for example, unit testing?
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Parity UI Error Massage

Every time I close Parity UI it ends with this error message: (Parity-Ethereum v2.4.0-20190221 beta)
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I am following Ethereum Book, but I am getting errors in the Terminal

I am learning Ethereum Development from the Ethereum Book by Andreas. I have stumbled on the first error trying to do $ cargo install . I will post the instructions as an image and the errors I got. ...
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39 views

Syncing from hardcoded block in parity light client?

I need to sync my parity light client from a hardcoded block. I synced the light client fully in a Debian image and exported the hardcoded sync. I then pasted it in the chain spec file of a desired ...
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Maximum amount of TX per block

Yesterday we did a test. We launched around 1500 transactions simultaneously to our test private blockchain. They all went through perfectly, all at almost the same time (with correct and consecutive ...
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Changing chain specification

We have a private network with 10 nodes actually. It's been working for a couple months now. When we did it, we set up some parameters in the chain specification that are now too small for the growth ...
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Parity node is slow in syncing ethereum Ropsten net

I'm using a parity node for the purpose of checking transactions, address balances and generate new addresses via the RPC interface. I noticed lately that the balance of the addresses are not updated ...
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State verification during full sync

How does the state verification work when doing a full sync from scratch? Does the state get generated locally for each block using the transactions downloaded (in the transaction trie) and then ...
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Substrate purge-chain expects a spec file

Working from a substrate-node-template generated with the tools at https://getsubstrate.io, I'm having trouble purging the chain. According to this tutorial, the command ./target/release/substrate-...
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Parity Ethereum service not working

I downloaded the 2.2.7 stable binary for Ubuntu from the Parity website. I set it up as a service, using the standard files. I changed nothing. However when I did; sudo systemctl start parity It did ...
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Difference of parity PoA between Validator Sets and Aura?

It seems there are two PoA consensus algorithms in parity PoA. What is the difference between Validator Sets and Aura?
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What's the difference between the Parity-Ethereum and the Parity client?

If you open https://etherscan.io/nodetracker you can see that the second most prevalent Ethereum client is Parity-Ethereum followed by Parity. What is the difference between these two client types?
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Strange result for w3.eth.filter({'fromBlock': 2500000, 'toBlock': 'latest'})?

I use Parity: Parity-Ethereum//v2.2.7-stable-b00a21f-20190115/x86_64-linux-gnu/rustc1.31.1 I tried code to see new entries for block range. l = w3.eth.filter({'fromBlock': 2500000, 'toBlock': '...
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Unable to build parity from source on macOS

Just did a fresh clone from github and: cargo build --release --features final gives me a link error: = note: Undefined symbols for architecture x86_64: "_je_malloc_usable_size", ...
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83 views

How to find all Ethereum nodes and list it?

Hi is that possible to find eth nodes and list it with some details? I want to do some metrics and service like ether nodes. they dont have an API.
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69 views

Estimate gas limit without eth_estimateGas method

POA Network (Ethereum Like) blockchain has eth_estimateGas to estimate gas limit but this method does not work in POA Network Sokol (Testnet) blockchain. When i call this method it gives response: { ...
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What do I do about my Ether since the 2019 Constantinople upgrade has been postponed?

With the last minute postponement of the 2019 Constantinople upgrade. What do I do about my stored Ether? And what software do I need to upgrade to if I am running Geth or Parity?
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Really slow syncing on mainnet with SSD disk and archive mode

I've set up a full Parity Ethereum node connected to the main network on a server with 2TB SSD, 4 CPUs and 8GB memory. I've set the pruning mode to archive since my application does a lot of state ...
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Issue in understanding Crowsale in the ICO contract

I want to create a token and run an ICO but all this without the function of crowdsale and minting. It want it to be a token which has a strict initial suplly (exmpl 1M) and without the funtion of ...
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Is it possible that Ganache can handle a private key without an “0x” prefix, but Parity cannot?

I am trying to sign and send a transaction as follows: let signedTx = await web3.eth.accounts.signTransaction(options, PRIVATE_KEY); let txReceipt = await web3.eth.sendSignedTransaction(signedTx....
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What are the benefits of ethereum 'archive' sync mode and who should use it?

We have set up a private Ethereum node for our blockchain application connected to the mainnet. The node runs on a server with 2TB SSD, 4 CPU and 6GB memory. It's been syncing for about a week and is ...
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1answer
36 views

How an Ethereum Node stores data?

How an Ethereum client stores the blockchain data in the disk? I know two of the major Ethereum clients is go-ethereum and parity, so I'm also asking if they store data in a different way or if there ...
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25 views

run multiple parity clients in parallel

How can I run multiple parity instances on one machine? With geth it's easy. I just have to set different --port numbers. What's the equivalent for parity? I want to recreate Afris scenario.
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Syncing events history for specific addresses, possible?

I am writing software that needs the full history of events but I only need it for a certain contract address, which I would guess is a very common use case for app developers. Is there a way I can ...
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How to let parity EVM execute just some blocks from a state?

I want to do an experiment using mainchain data. The experiment aims to test EVM performance. So, I want to let EVM execute some blocks and measure the performance. Are there some tools that can be ...
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35 views

Allow remote RPC to Ethereum parity node

I have a fully synchronized Parity Ethereum node running on Ubuntu 16 I tried to find a straight answer on how to enable the node to accepts remote RPC calls from a specific client but could not find ...
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How to Change Ethereum to Other Names

I used parity to deploy my private chain, I want to change "ethereum" to "abc", what should I do? In my Genesis file, i modified a parameter called subprotocolName, but i used MetaMask to test ...
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103 views

Performance Analysis of Ethereum Clients Geth and Parity

I want to do performance analysis of Geth and Parity. I want to run 1000 transactions serially on each client and want to get transaction processing time for each transaction. How can i get these ...
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141 views

How to get list of all transactions on all accunts in parity wallet [duplicate]

I'm looking for simplest way how to get list of all transactions(incoming, outgoing, external, internal, confirmed, unconfirmed) on all accounts created in parity wallet. The listing should support ...
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Drawbacks Query Logs of Parity Node in Fast Mode

We need to query all the past transfer events of a contract to identify all historic token holder addresses. Am I right that for this we need a full node and can't use fast mode? I've read that fast ...
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Old version of Parity stopped working and I'm unable to install new stable version

I have parity 1.6.8 installed on OSX 10.13.6 Parity used to work by running to .app file and then accessing http://127.0.0.1:8180/#/home on a web browser. Now it tells me, "Unable to make a ...
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Parity json.ipc file permissions

How can I give permission for another non-priv user on the same server to get Read/Write access /home/parity/.local/share/io.parity.ethereum/json.ipc and have that access available on reboot? The ....
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Debug Parity and ethminer

I can not mine on a private blockchain using parity in stratum mode and ethminer. Parity Ethereum version: 2.1.9 ethminer: 0.16 Operating system: Ubuntu 18.04 Here is the output from ethminer: m ...
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Parity --unlock throws error

When launching Parity UI with --unlock and --password I get this error No valid password to unlock account 0x00e4…fb21. Make sure valid password is present in files passed using --password or in ...
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What's the difference between 'type' and 'callType' in parity trace?

For the parity node, the response for getting the transaction trace contain "callType" and "type" which are all "call". But for geth node we only get 'type':'Call'. So I am confused, whats the ...
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parity json RPC eth_getBalance timeout on light mode

I have timeout problem with eth_getBalance on light mode enable on parity json-rpc. I have no problem with light mode disabled. Here my command on parity parity --chain ropsten --jsonrpc-apis all -...
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How do consensus vulnerabilities occur when parity nodes do not mien?

While familiarizing myself with Ethereum, I found multiple security alerts referring to consensus issues, most notable those that arose because the geth and the parity client handled certain edge ...
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Running 'parity account new' - is the generated account suitable for all networks (mainnet, ropsten, kovan, etc)?

From a command line, I run parity account new. I am then asked to enter a password (twice), and an account-address is printed. In addition to that, a JSON file is created. Finally, I use this ...
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1answer
168 views

How can obtain the value of erc20 token in transaction? [duplicate]

i want to get the token's transferring value like this: https://etherscan.io/address/0x27054b13b1b798b345b591a4d22e6562d47ea75a#tokentxns How can obtain the value of erc20 token in transaction? https:...
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28 views

how do I know which node picks up my transaction? in general, how is a node assigned to broadcast a specific transaction?

How do I know what node is broadcasting my transaction to the network? how can i get more information about this node? for example, how do i know if the node is a geth or parity node? does it matter?
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25 views

Parity node mysteriously shutting down by itself

I noticed that my Parity node keeps shutting down by itself every 15 minutes or so. I am running it using this command: /usr/bin/parity --jsonrpc-interface=all --jsonrpc-port=8545 --log-file=/root/...
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Does lowering the share difficulty allows me to find more blocks?

Lets assume that I've a very powerful server with very fast internet connection (32GB RAM, 4GBit/s upload and download) which runs MiningCore and Parity for private mining. Does decreasing the Share ...
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Private network: Using geth to mine for parity nodes

I want to set up a private Ethereum network using a parity client. Ideally, I want to resemble the "real" Ethereum network as close as possible. Thus, I want to set up a proof of work network. For ...