Trending questions in Blockchain

0 votes
2 answers

How can I make transactions to a blockchain from a remote device(like a cell phone)?

You can do this by developing a ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 67,660 points
58 views
0 votes
1 answer

In hyperledger, how many number of ordering node can take up a transaction?

There are two types to implement ordering: 1. ...READ MORE

Jun 25, 2018 in Blockchain by Omkar
• 67,660 points

edited Jun 28, 2018 by Omkar 266 views
0 votes
1 answer

Changing block time on Quorum.

They are two commands you can use ...READ MORE

Jun 26, 2018 in Blockchain by Omkar
• 67,660 points
131 views
0 votes
1 answer

How to search inside List for a specific value?

You can amend your ORM wrapper such that ...READ MORE

Jun 27, 2018 in Blockchain by Christine
• 15,790 points
97 views
0 votes
1 answer

Can't import "blockchain.info" to Node.js.. Need help.

Aurelia is a client-side framework and blockchain ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 67,660 points
84 views
0 votes
1 answer

Error while running make command using Fabric 1.0.6

It's a known issue in go 1.9.4: https://github.com/golang/go/issues/23739 While ...READ MORE

Jun 26, 2018 in Blockchain by Perry
• 17,020 points
116 views
0 votes
1 answer

What path should I give for credentials in web3j?

WalletUtils.loadCredentials can be buggy, I would recommend ...READ MORE

Jun 26, 2018 in Blockchain by Shashank
• 10,350 points
105 views
0 votes
1 answer

Getting world state by value

Worldstate level storage works at the {key,value} ...READ MORE

Jun 27, 2018 in Blockchain by ariaholic
• 7,340 points
48 views
0 votes
1 answer

Issue to run curl command in windows 7 Docker Quickstart Terminal

Actually, the issue is more likely that ...READ MORE

Jun 27, 2018 in Blockchain by ariaholic
• 7,340 points
52 views
0 votes
1 answer

Can't install remote HTTP chaincode

Fabric 1.0 does not support remote paths ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 67,660 points
41 views
0 votes
1 answer

How can I create a blockchain for keeping records?

​You can use an already existing Blockchain. ...READ MORE

Jun 27, 2018 in Blockchain by Christine
• 15,790 points
45 views
0 votes
1 answer

Ethereum Token Nam Redundancy

From my experience no, the trick is ...READ MORE

Jun 27, 2018 in Blockchain by ariaholic
• 7,340 points
33 views
0 votes
1 answer
0 votes
1 answer

Error: t: Instance org.acme.seller.Car#HW7722 missing required field oldOwner

This error occurs if you have added a ...READ MORE

Jun 21, 2018 in Blockchain by Christine
• 15,790 points

edited Jun 21, 2018 by Christine 267 views
0 votes
1 answer

How do I implement Blockchain in my project

It depends on the objective of the ...READ MORE

Jun 26, 2018 in Blockchain by Shashank
• 10,350 points
35 views
0 votes
1 answer

How should I set my mac for Installing Hyperledger Composer Playground?

Use the following link to install the ...READ MORE

Jun 26, 2018 in Blockchain by Perry
• 17,020 points
32 views
0 votes
1 answer

Permisssible platform suitable for C

There are many implementations of Blockchain like ...READ MORE

Jun 26, 2018 in Blockchain by Shashank
• 10,350 points
30 views
0 votes
2 answers

Why is network already up to date while trying to deploy a contract on truffle?

I guess you have ganache running already ...READ MORE

Apr 23, 2018 in Blockchain by Shashank
• 10,350 points
325 views
0 votes
1 answer

Çannot implement web3.eth.subscribe on Web3 version 1.0.0-beta.27

As the error suggests, pub/sub is not ...READ MORE

Jun 19, 2018 in Blockchain by Perry
• 17,020 points

edited Jun 19, 2018 by Perry 324 views
0 votes
1 answer

How many people are mining bitcoins all over the world?

No, it's not possible to find out ...READ MORE

Jun 26, 2018 in Blockchain by Omkar
• 67,660 points
33 views
0 votes
1 answer

Not Able to register a user with Hyperledger-Fabric v1.1 preview

The error: "Certificate not found with AKI 'e729224e8b3f31784c8a93c5b8ef6f4c1c91d9e6e577c45c33163609fe40011' ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
434 views
+1 vote
1 answer

Car lease demo database location in IBM blockchain

Firstly, yes you can change the default DB ...READ MORE

Jun 7, 2018 in Blockchain by Christine
• 15,790 points
769 views
0 votes
1 answer

Web3j Transfer.sendFunds() returns Error “insufficient funds for gas * price + value”

DISCLAIMER. This may not necessarily be an answer to your ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
421 views
0 votes
1 answer

How to enable authentication in hyperledger Angular application

Try npm install -g passport-github READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
412 views
0 votes
1 answer

Hyperledger : Deploying chaincode successful. But, cannot query - says ResourceNotFound

The problem(from logging) is dial unix /var/run/docker.sock: connect: ...READ MORE

Jun 20, 2018 in Blockchain by charlie_brown
• 7,720 points
212 views
0 votes
1 answer

Web3j v3.3.1 : Error while generating compiled solidity smart contracts which returns array of struct

Solidity does not support returning structs in ...READ MORE

Jun 19, 2018 in Blockchain by ariaholic
• 7,340 points
223 views
0 votes
1 answer

How can I build a network map cluster in Corda?

Corda community is working to move towards ...READ MORE

Jun 20, 2018 in Blockchain by ariaholic
• 7,340 points
178 views
0 votes
1 answer

"Blocking waiting for file lock on the registry index"

Use the following command: rm -rf ~/.cargo/registry/index/* Or you ...READ MORE

Jun 18, 2018 in Blockchain by Christine
• 15,790 points
236 views
0 votes
1 answer

In IBM's Marble demo where are the transactions stored?

When using the Marbles tutorial, there is ...READ MORE

Jun 19, 2018 in Blockchain by Johnathon
• 9,080 points
170 views
0 votes
1 answer

Error: Tendermint node crash

It's very simple. Just type in the ...READ MORE

Jun 21, 2018 in Blockchain by Christine
• 15,790 points
68 views
0 votes
1 answer

Windows not able to recognize Monax command

You probably know this already but support ...READ MORE

Jun 21, 2018 in Blockchain by Johnathon
• 9,080 points
36 views
0 votes
1 answer

I wish to know about the data storage in blockchain

That string would be stored in the ...READ MORE

Jun 21, 2018 in Blockchain by Johnathon
• 9,080 points
28 views
+1 vote
1 answer

How can I add image into my Hyperledger instance

In your registry, you can Base64-ify your ...READ MORE

Jun 8, 2018 in Blockchain by ariaholic
• 7,340 points
530 views
0 votes
1 answer

Not able to use IBM Blockchain services after Bluemix 1.0 update (Hyperledger 0.6)

The bluemix service was using an older ...READ MORE

Jun 20, 2018 in Blockchain by charlie_brown
• 7,720 points
45 views
0 votes
1 answer

How to make my Dapp work on regular browsers?

There are ethereum supporting browsers like Metamask, ...READ MORE

Jun 20, 2018 in Blockchain by ariaholic
• 7,340 points
42 views
0 votes
1 answer

Blockchain Usecase - Personal Management Records

1. Channels is a mechanism by which ...READ MORE

Jun 18, 2018 in Blockchain by Christine
• 15,790 points
106 views
0 votes
1 answer

How to schedule a task inside hyperledger composer ledger?

correct on 2 - you likely won't ...READ MORE

Jun 18, 2018 in Blockchain by charlie_brown
• 7,720 points
83 views
0 votes
1 answer

How to store picture(s) in a hyperledger blockchain channel

You can hold images as encrypted characters ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
180 views
0 votes
1 answer

jQuery/ajax - two separate API requests with combined results

You can move the second ajax call ...READ MORE

Jun 19, 2018 in Blockchain by ariaholic
• 7,340 points
43 views
0 votes
1 answer

Can we protect a Private Blockchain with a Public Blockchain and how?

I have recently reviewed Exonum framework (https://exonum.com/) ...READ MORE

Jun 19, 2018 in Blockchain by Perry
• 17,020 points
36 views
0 votes
1 answer

NPM Error While Installing Lisk Dependencies

Meet the lib sodium fails. You're using node ...READ MORE

Jun 18, 2018 in Blockchain by charlie_brown
• 7,720 points
62 views
0 votes
1 answer

Sawtooth Invalid Batch or Signature

The problem is in setting the batch ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
130 views
0 votes
1 answer

How to read a state after writing it into a chaincode?

Data that is 'written' in chaincode is ...READ MORE

May 28, 2018 in Blockchain by Perry
• 17,020 points
938 views
0 votes
1 answer

Can I change the code of the node and runit usually?

Say, you run an unmodified ethereum node, ...READ MORE

Jun 18, 2018 in Blockchain by charlie_brown
• 7,720 points
19 views
0 votes
1 answer

Deploy API REST IBM Hyperledger Composer Blockchain (bad flag in substitute command: 'U' ERROR)

There is an error in that document. ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
116 views
0 votes
1 answer

How to get notified when an event triggers on ethereum smart contract?

Here's a simple example for web3js 1.0.0.beta*: function handler ...READ MORE

Jun 8, 2018 in Blockchain by ariaholic
• 7,340 points
435 views
+1 vote
2 answers

What is a blockchain and ethereum?

Some of the use-cases are: Healthcare Medical records are ...READ MORE

Aug 9, 2018 in Blockchain by Omkar
• 67,660 points
63 views
0 votes
1 answer

I get the following error when I try to submit a transaction on the hyperleger playground

not enough information as to how you ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
78 views
+1 vote
3 answers

Is it possible to store data about arbitrary objects on the blockchain using smart contracts?

Consider following tutorial from Hyperledger Fabric "Getting Started" pages. Basically ...READ MORE

Aug 30, 2018 in Blockchain by Artem
124 views
0 votes
1 answer

I need all Ethereum smart contracts

Have a look at EIP165. It allows you ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
42 views