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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41 views

transactions in rpc block response sometimes have chain null and sometimes correct chain

when doing e.g. a blockByNumber rpc request I am getting a result like this from parity: https://gist.github.com/ligi/fbc7061d93f087cf0eb0f4db83d1fced what is puzzling me that some transactions have: ...
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Parity - flush or ban peers

I am running a Parity node and I have a very odd problem with transmitting some transactions. My node appears to be working fine, but when I attempt to get some basic information from the blockchain ...
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My parity node constantly gets requests from 0x0

I ran my parity node (stable version) with this command on a docker: /bin/parity --chain=kovan \ --jsonrpc-interface all \ --jsonrpc-hosts all \ --light \ --force-sealing \ --auto-update=all \ --min-...
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3answers
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Gas estimation failed - remix

I am trying to figure out what is wrong with the following code as it does deploy successfully on remix. pragma solidity ^0.5.11; contract MyContract { // Storage address contractOwner; ...
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Why admin.addPeer() command did not add parity client for private chain with Docker?

I would like to set up private chain which both geth and parity clients running on the same network. here is a sample repository with docker-compose file: https://github.com/user48736353001/devnet ...
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What are the minimum requirements for Geth server only for API calls?

I want to run a platform based on Ethereum and PHP to let our customers to sell/buy Ethereum based currencies online, and we have not any plan to mine the blockchain. In this regard, please help me to ...
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8 views

Synchronization with Parity

I am running synchronization with Parity, when I disconnect the server from my client-side ssh interface, will the synchronization process be interrupted?
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27 views

How often Geth/Parity access the archive chain files? Can I store remote?

I'm running a full archive node to receive and send funds (ETH & other tokens also). The size of the blockchain is very large, so I'm thinking about storing it remotely and mount as an sshfs ...
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56 views

Parity Aura - Error: Transaction has been reverted by the EVM

I run the following code against two private blockchains, parity-aura and geth-clique. Why does the parity transaction revert and why does it use 6,000,000gas when it should actually only use about ...
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87 views

erc20 transfer SafeMath: subtraction overflow?

I am trying to transfer a erc20 token. const data = contract.methods.transfer(recipient, amount).encodeABI(); const rawTx = { from: sender, nonce: '0x' + count.toString(16), ...
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Parity proof of authority aura, how to detect misbehaviour?

I'm having trouble finding the answer looking at the Parity POA aura examples, the documentation on Parity Validator Sets, plus the Kovan validator set contract solidity source code. I see that you ...
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18 views

subscriptions in Geth or Parity

I am trying to get the way to register subscriptions to events, with the services of QuikNode I can do it without problem and it is working perfect, but I am trying to raise a node --light with geth ...
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Parity isn't doing anything- hasn't even started syncing as far as I can tell

I'm sorry for what must be a common question around these parts, but I'm getting nowhere fast with parity. I ran this command: parity --warp-barrier 8460000 --no-ancient-blocks And after 24 hours ...
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Is Geth and Parity a threat to decentralization?

They make up nearly 80% of all clients. If they wanted to, could they rearrange blocks and mess the blockchain up? Are they a threat of decentralization?
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Can we add block reward contract in parity aura latter on

We know there is an option to add a block reward contract to incentivize authors of new block by using blockRewardContractAddress at chain engine specs. Is it possible to add this property in the ...
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RPC command to list current nodes

I am using Parity and I want to see a list of the IP addresses of every node my node is talking to. I am sure I have done this before but I can't remember how. Please share the curl/RPC command to ...
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50 views

How to connect to Rinkeby without using Geth / Parity?

First let me explain my development environment. I am using Jupyter Notebook to play around with the Web3.py front-end code and Remix for the Solidity smart contract code. I am using the Metamask ...
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Process address deposit from contract

Our service handles thousands (currently 10000+) of users and each user has his own Ethereum deposit address. To detect a new deposit we: Scan each block to get a list of transactions Get a list of ...
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51 views

Good source for TPS and transaction latency / finality for private Ethereum blockchains

I am looking for a good source / sources to compare TPS and transaction latency (How long it takes to send a transaction until it is mined) for different private blockchain solutions. Especially I am ...
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23 views

Sending ETH or Tokens from the command line to be integrated in a PHP script

I'm relatively new to using ETH on the command line. Do I use Geth or Parity? All I want to do is be able to send some ETH or Tokens from my eth private key. Which way is the best way to do it? I plan ...
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41 views

Parity doesn't send a notification to ethminer

I can't get the ethminer to work with my private network. I start the parity in stratum mode, passing my own config file as a parameter, and then launch the ethminer. He successfully logs in and ...
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22 views

Set up hardforks parameters in parity JSON chain spec file for private network

I want to set up a private network for tests using parity, which will function in the same way as the current mainnet, but with very low block mining complexity. Is Is it true that for this I need to ...
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1answer
25 views

Implications of IP change on boot node?

I have a private blockchain using Parity. One of the bootnodes may have to change the IP. What is the correct way to do this and what are the implications of this? This question implies questions ...
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1answer
51 views

Congestion tx not found in mempool

I have a parity node running and am watching the txpool for incoming tx's to a specific address. I need to catch the tx in the mempool. The node is in France and the tx's are sent from Ireland. All is ...
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How I can get parity logs for non-mainchain blocks?

There's no much info on how parity event log works. What happens to event logs that correspond to block which is not mainchain anymore? Are they unrecoverably lost? For such an occasion, is there any ...
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It is very slow to sync by parity in archive mode

I am syncing by parity in archive mode. tracing="on" pruning="archive" fat_db="on" Currently it is around 4,880,000 blocks but very slow, 0.2~0.8 blk/s. I am afraid it will take serveral months ...
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41 views

Parity version while running

I'm running a Parity node in a docker container. I've installed it with docker pull parity/parity:stable some time ago. How can I know which version of Parity I'm running? (without stopping the node)....
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1answer
37 views

How can I export/show private key on parity cli?

I did this command on parity parity --chain mainnet account new I got the address but, How can I export or see the private key?
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Validator Contract deployment

Hello When I try to deploy below contract i get this error Open new block failed with error Error(Engine(FailedSystemCall("Engine error (Failed to make system call: Bad jump destination 0)")), ...
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1answer
35 views

How does Geth query the blockchain?

This question has probably been already answered somewhere else but I didn't find anything on the internet so I'm asking here. I wonder how clients such as Geth query the blockchain to get specific ...
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1answer
114 views

Parity POA Smart Contract Method Always Fails

I have set up a private POA Network according to the tutorial from the parity homepage. I have two nodes running on localhost:8540 and localhost:8541. I have connected MetaMask to my first node and am ...
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1answer
28 views

What is txpool equivalent in Parity?

I'm aware of txpool module in Geth where it able to show how many transactions in the pending and queue state. How to get the same result in Parity node? The parity_alltransactions looks like ...
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74 views

Deploy contract to Parity dev chain using Remix

I'm trying to deploy a contract via remix to my local development chain. However, the transaction never gets mined and is pending forever. When I use a node script it works (at least I receive the ...
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73 views

“Method not found” when trying to parity_subscribe to eth_getFilterChanges

Parity Ethereum version: 2.5.1-beta, tested on 2.4.6 as well Operating system: Linux (Ubuntu) Installation: binary Fully synchronized: yes Network: ethereum Restarted: yes I'm using a websocket. I ...
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50 views

Rinkeby ethereum block stuck at 4321234

I'm trying to sync rinkeby using parity with patch to support rinkenby but now it's stuck at block 4321234. Does anyone have solution to pass that block without having to resync from the beginning? ...
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1answer
81 views

How to access Parity node's mempool with web3.py?

I'm running a Parity node with parity --jsonrpc-api all, then connecting to it in python3 with w3 = web3.Web3(web3.HTTPProvider('http://localhost:8545')). I can call print(w3.eth.getBlock('latest'))...
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106 views

Parity Mnemonic or Keyfile not compatible with MEW?

I'm on a new computer and I have 2 ETH addresses I created on parity in december 2017 and february 2018. Now I thought I followed the plan on what to do to secure the addresses but when I enter the 12 ...
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17 views

Parity synced at not existing block 4839212

I have problem with parity, cant get synchronization in archive mode to end, anything, changing arguments, max-, min-, snapshot-peers, parity verisions do not help. I have blockchain in archive mode ...
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Parity build error

mac os 10.14.4 CMake-3.14.4 was installed by running the bootstrap script in CMake-3.14.4 directory. then ran $ git clone https://github.com/paritytech/parity-ethereum $ cd parity-ethereum $ ...
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1answer
65 views

Parity 2.2.7 doesn't recognize “registrar” or “eip150Transition” in the genesis file

I am trying to run a Parity client and sync it with a Geth private blockchain. I was able to do it at first, but after adding "constantinopleBlock", "byzantiumBlock" and "petersburgBlock" to the ...
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1answer
132 views

What is the --force-sealing option in the parity for

Can someone please explain what the --force-sealing option is for? From the description I don't understand exactly what it's doing. I want to understand why it must be set if I want to get a pending ...
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1answer
30 views

Fetching block template from node

The most famous opensource pool uses eth_getBlockByNumber method with parameter "pending" to get block template and generate jobs from it. But now, in parity, I found that this parameter is deprecated ...
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138 views

parity initializing snapshot whole night

I have parity installed and synced. I went out of disk space. I moved the chain to bigger ssd. Then I started the parity service and let it run whole night. It did not finish. in log I can see ...
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Mirroring public Ethereum blockchain to a private chain

I am working on tokenised securities space. Our plan is to run tokenised securities on a public Ethereum blockchain. There is an operational risk that public blockchain becomes unavailable and ...
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24 views

How do I send 0.1 tokens from the Parity client to another address using a custom gas price and CLI only?

How do I send 0.1 tokens from the Parity client to another address using a custom gas price and CLI only? Hi, I want to send 0.1 tokens from my Parity client running on Ubuntu to another address. I ...
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33 views

Send ETH on Command Line with Parity

How do you send ETH on the command line with Parity? I am trying this on a node running Parity 2.4.5: curl -H "Content-Type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"...
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Read data from parity .sst Files

I'm working on a c# application that reads the data from ethereum parity and parses it. As of present i managed to read the key value pairs from the files and convert them to hex. While looking at the ...
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133 views

Parity syncing in archive mode stuck at block 4839206

I am running Parity inside docker in pod in Kubernets on Google Cloud. The pod is using disk with 2700 GB for storing Ethereum blockchain, and currently disk has about 2100 GB free. Unfortunately for ...
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1answer
80 views

How long did a transaction spend in the mempool?

I'm trying to create some statistics on how long a transaction spends in the mempool before being included in a block, so I can reason about future gas prices. It would appear transactions in Ethereum ...
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1answer
271 views

Parity - Permission Denied, Cannot write version file

I am trying to run a Parity daemon. Here is my shell command: sudo parity --db-path . --port=20000 --ws-port=20001 --jsonrpc-port=20002 --jsonrpc-apis web3,parity,parity_accounts,personal,eth daemon ...