web3 | CLI tool to interact with web3 blockchains | Cryptocurrency library
kandi X-RAY | web3 Summary
kandi X-RAY | web3 Summary
Simple command line tool for interacting with web3 enabled blockchains - GoChain, Ethereum, etc. This repository also exports the backing golang package web3.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of web3
web3 Key Features
web3 Examples and Code Snippets
Community Discussions
Trending Discussions on web3
QUESTION
I managed to have this code run after few hours of searches but unfortunately, this does not produce the output I wanted which is to get the LP Pool Address in (TOKEN/BNB LP).
Given the Token Address: 0xe56842ed550ff2794f010738554db45e60730371
I wanted to get the BIN/BNB Pool Address: 0xe432afB7283A08Be24E9038C30CA6336A7cC8218.
Any ideas what could be the problem?
...ANSWER
Answered 2021-Nov-21 at 18:58You need to enter the two coins in alphabetical order.
QUESTION
I am new to blockchain app development, I saw a project where ganache accounts are imported into Metamask, then web3.js is used to access and print those accounts and balances on Frontend (user interface).
If web3.js can directly access ganache blockchain accounts and balances, why do we need Metamask in between?
...ANSWER
Answered 2022-Feb-08 at 09:11If web3.js can directly acccess ganache blockchain accounts and balances, why we need metamask in between?
In this case, you don't need MetaMask to sign the transaction, as the node (Ganache) holds your private key.
But in a public environment (testnets and mainnet), the node doesn't hold your private key, so you'd need to sign the transaction using MetaMask (or any other tool that holds the private key).
QUESTION
I'm trying to validate that the input text I get from a user is a valid Solana address.
According to the web3.js documentation, the method .isOnCurve() does that:
https://solana-labs.github.io/solana-web3.js/classes/PublicKey.html#isOnCurve
I've managed to make it work with this code:
...ANSWER
Answered 2022-Feb-21 at 04:02To validate a Solana public key may be a wallet address, you should both use isOnCurve()
and the PublicKey
constructor like you are doing.
The error thrown makes sense. If the address is not a public key, it should not be able to be instantiated.
Perhaps there could be another function made native to @solana/web3.js that takes care of validating wallet addresses for you in the future.
QUESTION
I'm trying to install eth-brownie using 'pipx install eth-brownie' but I get an error saying
...ANSWER
Answered 2022-Jan-02 at 09:59I used pip install eth-brownie and it worked fine, I didnt need to downgrade. Im new to this maybe I could be wrong but it worked fine with me.
QUESTION
I am creating a DApp that connects to a smart contract deployed on a local test RSK blockchain (regtest) run by RSKj Java app. I intend to send transactions via Web3 connected to Metamask. In DApp I am getting the accounts list by sending a Web3 request:
...ANSWER
Answered 2022-Mar-25 at 10:34The first account from the list is referred as a “cow” seed in this file in RSKj. You can take the corresponding private key from there.
Do the following:
- copy the private key
c85ef7d79691fe79573b1a7064c19c1a9819ebdbd1faaab1a8ec92344438aaf4
, - open your Metamask browser plugin
- select
regtest
network - import the account
- Account icon in the upper right corner
- Import account
- ‘Paste your private key string here:’
- Set the just imported account as an active one
- Enjoy sending your transactions
QUESTION
I am trying to create a simple script to test the event listening functionality of Web3.js CreatedPairs
. However, my script runs through the code once and then exits instead of continuing to listen for created pairs and I cannot figure out why.
ANSWER
Answered 2022-Mar-21 at 20:42In this context, Web3.givenProvider
is null
, so the HTTP provider is used.
To be able to subscribe to events, you need to use a WSS provider.
QUESTION
I am currently trying to implement a hashrouter and Im getting the error: No routes matched location "register" going to the url localhost:3000/#register
My index.js:
...ANSWER
Answered 2022-Mar-21 at 20:18The links in NavDom
should be react-router-dom
links and they should link to pages the app is rendering. The URL will end up something like localhost:3000/#/register
.
QUESTION
Hi guys am a newbie in React when i start my project i get the Wepback V5 Error Message
Resolve updated : https://github.com/facebook/create-react-app/issues/11756#issuecomment-1001162736
This What am using!
...ANSWER
Answered 2021-Dec-21 at 09:19This looks like a new issue with many packages including web3 as these are not compatible with Webpack v5 without adding fallbacks for the polyfils.
Issue noted here: https://github.com/facebook/create-react-app/issues/11756
I solved this issue by adding the fallback to my webpack.config.js file;
QUESTION
I've created a brand new project with npm init vite bar -- --template vue
. I've done an npm install web3
and I can see my package-lock.json
includes this package. My node_modules
directory also includes the web3
modules.
So then I added this line to main.js
:
ANSWER
Answered 2022-Mar-14 at 03:36Polyfilling the Node globals and modules enables the web3
import to run in the browser:
- Install the ESBuild plugins that polyfill Node globals/modules:
QUESTION
I am trying to deploy my SimpleStorage.sol contract to a ganache local chain by making a transaction using python. It seems to have trouble connecting to the chain.
...ANSWER
Answered 2022-Jan-17 at 18:17Had this issue myself, apparently it's some sort of Ganache CLI error but the simplest fix I could find was to change the network id in Ganache through settings>server to 1337. It restarts the session so you'd then need to change the address and private key variable.
If it's the same tutorial I'm doing, you're likely to come unstuck after this... the code for transaction should be:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install web3
If you just plan to read from the blockchain, you do not need any GO tokens and you do not need to set your WEB3_PRIVATE_KEY. If you plan to deploy contracts or write anything to the blockchain, you'll need tokens and you'll need to set your WEB3_PRIVATE_KEY for the account that has those tokens.
FILENAME - the name of the .sol file, eg: hello.sol
SOLC_VERSION - the version of the solc compiler
You can use the script to install a specific version:.
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