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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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Parity speed limitations

I have a question about the node limitation for mainnet. I want to send a lot of transactions at the same time (let's say 1k), on the ropsten network it queues every tx and send batches of 64 every 10 ...
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Try running MyCrypto with my local node! [on hold]

i want connect my local parity nodes with Mycrypto i flowed this tutorial to built my two nodes https://wiki.parity.io/Demo-PoA-tutorial.html than i try to flow this tutorial to connect it to Mycrypto ...
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Parity consuming most of my CPU resources

I am having an issue with my Parity node consuming too much of my CPU and pushing the load average beyond permissible limits. One solution that I have is increasing the cores and memory, but before I ...
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1answer
18 views

Query parity or geth to get total ethereum produced?

How do I query geth or parity to get the total coins ever mined/in circulation. On bitcoind or any other coin based on btc core source its easy to achieve with a command line. Something similar for ...
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1answer
24 views

How can nodes fail

I am writing plans to support a parity blockchain cluster and need to determine guidelines for the DevOps team. What are the ways in which nodes can fail and back practice for handling these?
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1answer
32 views

Try running MyCrypto with my local parity nodes? [closed]

i want connect my local parity nodes with Mycrypto i flowed this tutorial to built my two nodes https://wiki.parity.io/Demo-PoA-tutorial.html than i try to flow this tutorial to connect it to Mycrypto ...
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17 views

i cannt confirm request in Parity I Can't locate local key file asked by parity to sign a transaction

How to confirm request in Parity I have POA chain from this tutorial https://github.com/paritytech/parity-poa-tutorial and as you can see it ask me to select local key and click confirm
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37 views

parity TPS optimization - please help

how to accelerate parity PoA ? I have been benchmarking different Ethereum clients with a focus on their PoA capabilities. Current results are: 56 TPS with parity aura 322 TPS with geth clique ...
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1answer
11 views

How does web3.auto choose a provider node?

I'm having this other issue which has forced me to rely on either infura or web3.auto in order to make the getTransactionReceipt call. I've noticed that when I create a w3 instance from web3.auto it ...
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23 views

EC2 configuration for running parity node with --pruning=archive

I'm trying to run a parity node on AWS EC2 with --pruning=archive and am running into issues. Has anyone done this? Running a light node works fine. But I run into issues as when I include --...
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1answer
20 views

Parity all pending transactions (not local)

From some version of Parity, it began to start like this And now, when i try to get all pending transactions from the whole pool, i'm getting only these local. But i need to get ALL as earlier. How ...
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1answer
23 views

Mining for local Parity node

I run a private local Parity node that uses the Ethash engine. How do I use a miner with it? I tried ethminer like suggested in the wiki (https://wiki.parity.io/Mining), but executing ethminer -G ...
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1answer
14 views

Validator stuck in Pending State

I am working with a kovan validator set for a POA network. When I try to add validator, I make the Initiate Change call and it goes through. Validator goes to pending state. When I make the Finalize ...
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18 views

How to create JSON file for an Rust Contract?

I'm trying to build my own Rust Contract. (I'm referring https://github.com/paritytech/pwasm-tutorial) But Json file is not creating and ABI is not generated. How can I fix this issue? Thanks in ...
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20 views

“RPC error, your account is locked” when I try to deploy the last version of parity-bridge

I have already success to deploy the last version of parity-bridge (last month), but today i have pull the last version of parity-bridge. I have that on my terminal : env RUST_LOG=info parity-bridge-...
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9 views

Parity Ethereum node missing CLI option to display configuration setting of a running node

I'm playing around with config.toml and using CLI options. Maybe I missed something, but I'm interested in executing a command by which I can exactly see what options are in effect when a Parity ...
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1answer
29 views

Opcodes PUSH, DUP and SWAP?

I studied EVM implementations and the bytecode sequences used by them. I wondered that there are three opcodes which are recognized by the EVM but actually are invalid opcodes. B0 PUSH B1 DUP B2 ...
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70 views

eth_getTransactionReceipt returns null only sometimes and only on my node, tx is successfully mined in

I'm having this strange problem and it may be related to the way my node is configured. I'm making calls to both infura and my own nodes like so: {'id': 123, 'jsonrpc': '2.0', 'method': '...
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12 views

How to open Parity database from javascript (how to open column families)?

I am trying to connect to Parity database at var dbPath = 'C:\\Users\\username\\AppData\\Local\\Parity\\Ethereum\\chains\\ethereum\\db\\906a34e69aec8c0d\\overlayrecent\\db' form javascript using npm ...
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1answer
19 views

ACCESSING BLOCKCHAIN ON “ESP8266” USING THE “NODEMCU BOARD”

I have read this example where it tries to interact with the Ethereum blockchain via a micro-controller (ESP8266 and NODEMCU board). However, I do not understand if an Ethereum client (Geth or Parity) ...
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23 views

Does Geth and Parity store blockchain in level db in same format?

If not, what are the diffrences?, for example geth db format is: var databaseVerisionKey = new Buffer("DatabaseVersion"); // databaseVerisionKey tracks the current database version. var headHeaderKey ...
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1answer
48 views

'curl: no URL specified!' Installing Parity on AWS (Ubuntu)

The accepted answer found here does not seem to work for me: https://ethereum.stackexchange.com/a/46926/11266 I created an EC2 instance of Ubuntu 16.04 LTS (HVM) $ bash <(curl https://get.parity....
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22 views

Unable to start Parity node

Parity Ethereum version: version Parity-Ethereum/v2.0.1-beta-e7dc0be-20180726/x86_64-linux-gnu/rustc1.27.2 Operating system: Linux Installation: built from source Fully synchronized: Network: ...
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2answers
38 views

Is it possible to call a function of smart contract “without” installing “Geth” or “Parity”?

Is it possible to call a function of smart contract to send a transaction (for example, writing on the Ethereum blockchain) but "without" installing "Geth" or "Parity" clients? In a more general ...
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1answer
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Updated: How to interact “directly” with smart contract via a micro-controller?

Assume we have a micro-controller and it collects a meta-data (ex. a payload as a string). How this micro-controller can interact "directly" with smart contract to write this data to the blockchain? ...
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1answer
34 views

What advantages does Trinity have over Geth or Parity? What differences does it have?

With the exception of the language it is being written in, what are the main differences that Trinity has over Geth or Parity (if any). What advantages does it have? Disadvantages?
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Is there something like “metrics” and “monitor” modules for Kovan?

I would like to monitor some parameters for Kovan and Rinkeby clients. Geth provides a monitor module that works with Rinkeby specifying --metrics when launching the client, and attaching to the ...
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1answer
85 views

Difference between Geth POA Clique and Parity POA Aura

I am creating my own private blockchain with a POA consensus. What is the difference between POA networks created by Geth (Clique) and by Parity (Aura), and are there scenarios that favor one over the ...
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20 views

Transfer tokens from Smart Contract to address using signTransaction + private key

I tried several links like this one, but when I call transfer function from contract and try to send tokens, its sending 'ethers' not 'tokens', how can I send tokens by signing a transaction offline ...
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10 views

What portions of the block are validated in Geth's --fast and Parity's --warp mode?

When I am syncing an Ethereum node using Geth's --fast mode and Parity's --warp mode, what portions of the block are being validated as they are being downloaded? I understand that --fast and --warp ...
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30 views

Parity node runs out of available RPC connections using web3

I'm using nodejs with web3 1.0.0. There are 2 instances of my app running, each making a websocket connection. For some reason, my parity node seems to quickly run out of available RPC connections (...
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Parity. How to correctly use the “private_composeDeploymentTransaction” RPC method

I'm triying to use the method using this script: curl --data '{"method":"private_composeDeploymentTransaction","params":["latest",request,["0xb9a4ccd31febe2759255af643f551fcd0765523e"],"0x999"],"id":...
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1answer
44 views

parity smart contract with large data

I'm following this tutorial: link for building a private parity blockchain, for some reason I have to insert some binary data into smart contract. What do I have to do to let the smart contract store ...
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What is fat db in parity

What does fat_db option in parity do? I don't understand its description from docs: Build appropriate information to allow enumeration of all accounts and storage keys. Doubles the size of the state ...
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Parity with geth and force-ui options: it is secure?

I'm running a parity node with option --geth and --force-ui. With this option parity use RPC port at localhost:8545 that I'm using with ethminer. I read a comment of user @smarx that it is possible ...
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1answer
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Using the Parity or Geth light client, how can I monitor an address for transactions?

I'd like to use Parity or Geth, in light client mode, to monitor an address for transactions. Essentially, I should be able to check each block for transactions involving a certain address. In the ...
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1answer
31 views

Contract deployment out of gas, but was created anyway?

I have deployed a contract with Parity on Kovan, which did not show up in the contracts menu after contract deployment was done. I had to watch it manually to be able to see it in the contracts menu. ...
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Parity - what --tracing and --pruning options use to get all blocks fastest way

I need download all blocks to be able to get all history transactions to create some statistics like mean Ether amount etc. Is it necessery to use --pruning archive and use ~ 1TB od disk? Or default ...
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1answer
50 views

Parity, Web3, Nodejs - Error: Transaction was not mined within 750 seconds, please make sure your transaction was properly sent

I'm using Parity ( "ropsten" test net), Nodejs and web3js to deploy smart contract from my system. Parity is synchronised in test mode, but when I run below code using Nodejs, it gave me a transaction ...
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2answers
210 views

Error: Couldn't decode bytes32 from ABI: 0x The size doesn't match

I am querying a mapping via a web3 call like this: var Web3 = require('web3'); const web3 = new Web3(new Web3.providers.HttpProvider('https://kovan.infura.io/key...')); var contractABI = new web3....
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41 views

Which Ethereum clients support running a full node?

Are there any other Ethereum clients besides for Geth and Parity which support running a full node?
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75 views

Can race conditions occur in PoA network?

I have the following contract deployed on my PoA network with two sealers, node1 and node2. Let's assume a user, user1, submits a transaction with call to process() method to node1 and another user, ...
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1answer
29 views

How to fund account for parity private chain?

I'm having trouble funding accounts when starting parity with a custom chain. My json file is { "name": "DevelopmentChain", "engine": { "instantSeal": null }, "params": { ...
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1answer
47 views

How to use “etherscan” to push a raw transaction without running a node?

According to this answer, how to use etherscan to push a raw transaction without running a node? In this case, do not we need to install Parity or geth or any Ethereum client ?
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1answer
105 views

“being full node” vs.“being sync” : Are they the same?

When we try to be sync using Parity or geth, Does it mean that we are trying to be a full node ? And is it correct to say that: being sync = being a full node = keeping the entire blockchain ?
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89 views

How to prepare VPS enviroment for instalation and running of Ambrosus node?

I would like to run Ambrosus development node. On Ambrosus github there are sume instructions, but I do not know how to prepare enviroment, what version of Ubuntu I should use and what tools should I ...
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83 views

web3.eth.getBlock returns null

I have a very similar problem as https://github.com/paritytech/parity-ethereum/issues/8788 When I use web3.eth.getBlock for the first 1 million and latest 50,000 blocks (approximately), I get the ...
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26 views

Sending transactions via MetaMask on Parity light mode

I have succesfully installed parity and am running it on the --light mode. I can connect to it with MetaMask via RPC. However, when I try to send a transaction it keeps hanging on the "send" screen of ...
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1answer
96 views

How to run Parity on Windows correctly?

Installed Parity 1.11.7 from the official website on Windows 10, then synced it, got the expected result: Then rebooted the PC, tried to launch Parity using the shortcut in Start menu (which points ...
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29 views

Parity warp sync doesn't return event logs

Our Dapp uses events as a form of storage. For connection to blockchain we use local Parity node. A couple of days ago I needed to resync it after the server failure. After the resync all methods ...