Trending questions in Blockchain

+1 vote
1 answer

how to create channels with new orgs in Fabric? getting error: Attempted to include a member which is not in the consortium.

$: peer channel fetch config config_block.pb -o ...READ MORE

Jul 24, 2019 in Blockchain by Ayush
 • 180 points • 3,490 views
0 votes
2 answers

How to solve “sender doesn't have enough funds to send tx” error in Ethereum?

I also had the same error. I ...READ MORE

Mar 3, 2020 in Blockchain by Noha Abuaesh
 • 6,429 views
+1 vote
4 answers

Uncaught Error: Returned values aren't valid, did it run Out of Gas?

Could be due to previously set values. ...READ MORE

Jan 31, 2019 in Blockchain by Omkar
 • 69,220 points • 8,725 views
0 votes
3 answers

How to create a cryptocurrency based reward system using Ethereum?

Hey, you can take the help of ...READ MORE

Oct 28, 2020 in Blockchain by jamesright
 • 140 points • 1,884 views
0 votes
1 answer

how to develop healthcare records using DApp on Blockchain?

Hi. As Healthcare will be a private ...READ MORE

Jul 26, 2019 in Blockchain by Esha
 • 2,767 views
+1 vote
1 answer

hyperledger fabric: can't find package: github.com/pkg/errors in GOPATH or GOROOT

Hey @aiga, try to add the package ...READ MORE

Aug 5, 2019 in Blockchain by Esha
 • 2,170 views
+1 vote
1 answer

Can we pass string values to the contract which holds bytes 32 only?

A string is not byte32 and so ...READ MORE

Aug 26, 2019 in Blockchain by Rina
 • 1,085 views
0 votes
1 answer

How can I become a miner in Blockchain?

You need to download software to become ...READ MORE

Jul 3, 2019 in Blockchain by Raman
 • 3,404 views
0 votes
2 answers

Why is getTransactionReceipt() returning None (NoneType object)?

If you want to know more about ...READ MORE

Sep 11, 2020 in Blockchain by pythoncourse
 • 140 points • 1,348 views
+1 vote
0 answers

Can I change the network id in ganache GUI? Is it work for calling the functions in solidity?

Can I change the network id in ...READ MORE

Aug 16, 2019 in Blockchain by anonymous
edited Aug 19, 2019 by Omkar • 1,377 views
+2 votes
1 answer

Trying to instantiate chain code on channel

Looking at the error, it seems like ...READ MORE

Aug 1, 2019 in Blockchain by Jessica
 • 1,942 views
–1 vote
6 answers

Hyperledger fabric: Docker container error: Error response from daemon: Container is not running

I had to update the version of ...READ MORE

Apr 25, 2019 in Blockchain by Gani
 • 9,788 views
0 votes
2 answers

Angular Bitcoin error: "Error trying to diff '[object Object]'"

There are two approaches to this: 1. You ...READ MORE

Sep 4, 2018 in Blockchain by slayer
 • 29,370 points • 14,048 views
+1 vote
3 answers

How to convert timestamp to readable format in blockchain.info?

You are talking about the block_time property ...READ MORE

Apr 29, 2019 in Blockchain by Raghu
 • 10,886 views
+1 vote
8 answers

How is Blockchain a linked list?

Blockchain is similar to Single Linked List ...READ MORE

Aug 3, 2018 in Blockchain by Omkar
 • 69,220 points • 13,876 views
0 votes
0 answers

How to add a new organisation to an existing channel in hyperledger fabric without creating a new node/peer for that organisation. Can we add a organisation which does not contain any nodes?

May 2, 2019 in Blockchain by anonymous
 • 5,437 views
0 votes
1 answer

How to check ethereum logs?

Hey there! You don't have a Verbose ...READ MORE

Jan 9, 2019 in Blockchain by Omkar
 • 69,220 points • 9,919 views
0 votes
2 answers

Can't get simple Coinbase button in Node to work

Coinbase sandbox is best to have when ...READ MORE

May 21, 2020 in Blockchain by anonymous
 • 140 points • 1,615 views
+1 vote
0 answers

Our chaincode is by default invoking some other data stored in Fabcar, whereas we already created our own data in init ledger.

Aug 1, 2019 in Blockchain by Dipashri
 • 940 views
+14 votes
4 answers

Difference between hyperledger fabric and sawtooth?

Source: https://www.hyperledger.org/wp-content/uploads/2017/ ...READ MORE

Aug 29, 2018 in Blockchain by Anurag
 • 9,533 views
+1 vote
0 answers

Metamask popup on Server side (Express js) ?

So I have this problem when i ...READ MORE

Jul 15, 2019 in Blockchain by Dzaky
 • 130 points • 1,642 views
0 votes
1 answer

What is geth and solidity in Blockchain?

geth is a tool used to run a ...READ MORE

Jun 11, 2019 in Blockchain by Rishi
 • 2,930 views
+1 vote
0 answers

Can't call contract function in Remix in Web3 provider mode, but it works in Javascript VM

A simple contract for addition, an error ...READ MORE

Jun 15, 2019 in Blockchain by XHQ
 • 2,650 views
0 votes
0 answers

How to use mutual authentication without CA in hyperledger fabric

I want to use some certificateless mutual ...READ MORE

Jul 29, 2019 in Blockchain by behnaz
 • 120 points • 738 views
+1 vote
0 answers

I am trying to replace the fabric-CA with External-CA to work in keep fabric in production environment, in Hyper-ledger fabric any suggestions?

Hi  can, i know how you implemented ...READ MORE

Jul 23, 2019 in Blockchain by anonymous
edited Jul 23, 2019 • 720 views
+1 vote
0 answers

How to Set Condition on apistub.getstateByRange(startkey,endkey) in Go chaincode of hyperledger fabric

actually i have 2 structure in my ...READ MORE

Jul 14, 2019 in Blockchain by Malik
 • 1,085 views
0 votes
0 answers

Couldn't find network parameters file and compatibility zone wasn't configured/isn't reachable

After ran this command java -jar network-bootstrapper-VERSION.jar --dir <nodes-root-dir>.The files is generated.After ...READ MORE

Jun 20, 2019 in Blockchain by anonymous
 • 1,985 views
0 votes
2 answers

Hyperledger Fabric: Error: could not assemble transaction, err proposal response was not successful.

Hey. It seems like you already have ...READ MORE

Nov 19, 2018 in Blockchain by Omkar
 • 69,220 points • 8,801 views
0 votes
1 answer

Solidity: casting address to address payable

I don’t see why direct casting isn’t ...READ MORE

Jan 23, 2019 in Blockchain by Omkar
 • 69,220 points • 8,261 views
+1 vote
1 answer

Multichain "Resource temporarily unavailable" error

The command you have executed is used ...READ MORE

Jul 10, 2019 in Blockchain by Olivia
 • 850 views
+4 votes
4 answers

What are the implementations of IBM blockchain?

IBM is an open source community of ...READ MORE

Mar 30, 2018 in Blockchain by Christine
 • 15,790 points • 1,299 views
0 votes
0 answers

In R3 Corda I don't know to start the web server port in server?

In R3 Corda all the nodes are ...READ MORE

Jun 26, 2019 in Blockchain by anonymous
 • 1,377 views
0 votes
1 answer

In assymetric cryptography how and when the sender will share the public key with the receiver?

Consider this example: Suppose Bob wants to send ...READ MORE

Jul 3, 2019 in Blockchain by Sheila
 • 973 views
+1 vote
2 answers

Not able to install Solidity in Ubuntu

As far as I can understand the ...READ MORE

Nov 26, 2019 in Blockchain by DeadShotOne96
 • 2,101 views
+1 vote
1 answer

Listing all Bitcoin Miners

Yes, you can list down all the ...READ MORE

Jul 3, 2019 in Blockchain by John
 • 848 views
0 votes
0 answers

Migrations ran out of gas

I have unboxed pet-shop. Then inside the ...READ MORE

Jun 25, 2019 in Blockchain by anonymous
 • 1,266 views
0 votes
0 answers

LIVE PODCAST THREAD** (#2 Are Smart contracts really the Future?)

Hey guys this is the link to ...READ MORE

Jun 28, 2019 in Blockchain by Vardhan
 • 13,150 points • 1,039 views
0 votes
1 answer

Public and private keys created residing in laptop/mobile while initiating a transaction

You need to provide the receiver's public key ...READ MORE

Jul 3, 2019 in Blockchain by Rachit
 • 744 views
+1 vote
1 answer

Where to download the corda network bootstrapper 3.1 or 3.2 version for r3 corda?

Here are the steps to setup corda ...READ MORE

Jun 24, 2019 in Blockchain by Raghu
 • 1,079 views
+1 vote
7 answers

How to solve “x509: ECDSA verification failure” error?

Before you execute the  composer runtime install -c ...READ MORE

Jul 30, 2018 in Blockchain by digger
 • 26,740 points • 9,008 views
0 votes
1 answer

If everybody on the network stores a copy of the ledger, can't someone distribute an infected ledger and thus spread viruses etc?

Hi @Noa! Even if everyone has a copy ...READ MORE

Jun 19, 2019 in Blockchain by Lisa
 • 1,303 views
0 votes
1 answer

Module not found: Can't resolve './truffle-contract/build/contracts

Hey! Firstly, there seems to be a ...READ MORE

May 9, 2019 in Blockchain by Omkar
 • 69,220 points • 3,038 views
0 votes
1 answer

Symmetric key in cryptography

Yes, the same key is used to ...READ MORE

Jun 20, 2019 in Blockchain by Firoz
 • 1,215 views
0 votes
0 answers

Is there any API for ether sent transaction in ethereum without using web3.js

I want to do a transaction (sent ...READ MORE

Jun 17, 2019 in Blockchain by vishal tyagi
 • 1,376 views
0 votes
1 answer

Using public and private keys for Blockchain transaction

You need to provide the receiver's public ...READ MORE

Jun 20, 2019 in Blockchain by Will
 • 1,173 views
0 votes
1 answer

How can i import the csv/excel files into my contract and record the transaction ?

You can not directly import an excel/csv ...READ MORE

Apr 16, 2019 in Blockchain by Omkar
 • 69,220 points • 3,918 views
0 votes
1 answer

ERROR: for cli UnixHTTPConnectionPool(host='localhost, port=None) Read time out log_timeout_error()

Can't give proper solution without knowing what ...READ MORE

May 15, 2019 in Blockchain by Rishi
 • 2,552 views
0 votes
4 answers

Hyperledger: byfn.sh up: ERROR !!! FAILED to execute End-2-End Scenario.

Try these commands $ docker rm -f $(docker ...READ MORE

Nov 28, 2018 in Blockchain by kartik chauhan
 • 6,879 views
0 votes
0 answers

How do we increase the amount of gas?

Jun 25, 2019 in Blockchain by Neha Agarwal
 • 782 views
+1 vote
2 answers

Integrating web3 from Metamask: "ReferenceError: window is not defined" error

You can't use MetaMask on server-side because ...READ MORE

Oct 10, 2018 in Blockchain by Omkar
 • 69,220 points • 7,249 views
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