Category "blockchain"

Can we change the spec.yaml in minifabric to install our own chaincode during default installation

On doing minifab up command can we specify the chaincode installed default (simple) to our own chaincode , by changing the configurations in the spec.yaml ???

How to Pull HIstorical Price Data from Solana Devnet Contracts?

I am looking to grab historical data from our Solana Devnet feeds. Can you let me know if get_submissions is the function that should be called for historical d

I can not deploy the program to dev net with anchor

I get this error where I run anchor deploy: Deploying workspace: http://127.0.0.1:8899 Upgrade authority: /home/<user>/.config/solana/id.json Deploying pr

eth-brownie - No module named <Users.someuser>

Getting this error while trying to run a eth-brownie script on MacOS ModuleNotFoundError: No module named 'Users.xyz' Run command: brownie run scripts/mainne

How to create a Crypto wallet for a start up(Bitcoin and Ethereum)?

I have beginner skills as Full stack Developer and am looking to help developing a crypto wallet with a small start up. The idea is to create a wallet that will

Amazon Managed Blockchain not showing Ethereum network

I am a newbie in smart contract development. I just create a smart contract for some analyze how it works, so I used the truffle suite with vs code to create a

Compilation failed Internal Compiler Error: Stack too deep, try using fewer variables

I am trying to compile the bellow contract and i am getting the error. If i remove the mapping i dont get an error: Compiling using default compiler, solidity v

When compiling my solana code , I am getting "TypeError: Named argument "username" does not match function declaration."

pragma solidity ^0.8.4; import "hardhat/console.sol"; contract Ewitter{ struct User{ address wallet; string name; string username;

BSC Testnet: Truffle Migrate ETIMEDOUT

I need to deploy my smart contract to BSC Testnet I always got this : Error: PollingBlockTracker - encountered an error while attempting to update latest block:

Is there any way to initiate a disconnect request to the Metamask wallet?

I'm building a decentralized application where users can connect their cryptocurrency wallet (Metamask) to my website. They can initiate a connection request by

Coinbase extension popup requires remove the cache every time for connection

I am having trouble connecting the coinbase wallet in my application and I was wondering if you could help me with this. My issue is that I am using the web3-re

WalletConnect & web3js - how to forget previously set wallet?

I'm writig a dApp using web3Modal and web3js libraries. I have an issue regarding the WalletConnect provider. Upon choosing to connect using WalletConnect, the

Is possible to see output data when tracking a transaction from its address on Etherscan?

I wonder if it is possible to see "Output Data" on Etherscan for non-view transactions that returned values, I mean it is possible to see "Input Data" when fetc

Time out error during Deployment in Binance Smart Chain

I got an error while deploying contract in Binance Smart Chain plz help me if anybody knows it error message looks like this Deploying 'WhitePaperInterestRat

How to change solana initial supply in own custom cluster?

The problem I'm working on is my team wants me to setup my own cluster with an initial supply of 400M sol. I have gone through the genesis module and found some

wallet-connect importKey error when uploaded to test server, but local server it works fine

I was trying out wallet-connect for my nft market place app . i have mostly everything set up from my end . Just that my wallet-connect works perfectly in local

How to deploy Hyperledger fabric on Openstack cloud?

I am working on Hyperledger Fabric for a time being. I want to deploy my Hyperledger to a cloud platform but only public cloud like AWS and Azure are supporting

Error when using bitcore-explorer with bitcore-lib (Bitcore)

I am trying to use bitcore-lib to generate bitcoin address and fetch unspent transaction using bitcore-explorer.. to generate the address here is the code: va

File not exist Solc error when trying to import data feed into my contract

I have tried changing different versions of solc, solidity, and chainlink contracts but it doesn't work. Error: contracts/Lottery.sol:4:1: ParserError: Sourc

NFT List Prices

OpenSea allows users to buy and sell NFTs. From OpenSea, you can view the prices of listed NFTs within a project. When an NFT is listed, is the listed price sto