Trending questions in Blockchain

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2 answers

Hyperledger Fabric Bluemix not accepting logins.

The error is caused because your certificate ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
• 69,230 points
623 views
+1 vote
1 answer

Does the client know which peer approves/supports its transaction in Hyperledger Fabric?

Yes, client is aware of the endorsing ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
• 69,230 points
698 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
1,220 views
0 votes
1 answer

How do I implement Blockchain in my project

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

Jun 27, 2018 in Blockchain by Shashank
• 10,400 points
756 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 27, 2018 in Blockchain by Shashank
• 10,400 points
754 views
0 votes
1 answer

Network issue while testing Chaincode.

You can do the following things: You can ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
• 69,230 points
453 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
• 69,230 points
713 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
694 views
0 votes
1 answer

Blockchain/decentralized apps development intro

If you are looking for books, try ...READ MORE

Jul 3, 2018 in Blockchain by charlie_brown
• 7,720 points
444 views
0 votes
1 answer

What is Blockchain?

Understanding Blockchain: Like Galia Benartzi says: Blockchain is ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
• 69,230 points
554 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
• 17,100 points
1,935 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 aryya
• 7,450 points
630 views
0 votes
1 answer

How can I get into the development of blockchain decentralized applications?

try Microsoft Blockchain as a service, they ...READ MORE

Jun 30, 2018 in Blockchain by Shashank
• 10,400 points
526 views
0 votes
0 answers

Identification of purchased product

I have created coins on test network.Now ...READ MORE

Jul 6, 2018 in Blockchain by charlie_brown
• 7,720 points
292 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 21, 2018 in Blockchain by charlie_brown
• 7,720 points
889 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
• 9,090 points
883 views
0 votes
1 answer

Does each DApp has its own separate Blockchain? Or can we develop multiple DApps on a single Blockchain platform?

A DApp is a decentralized Application. This ...READ MORE

Jun 11, 2018 in Blockchain by Christine
• 15,790 points
1,224 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
1,347 views
0 votes
1 answer

Permisssible platform suitable for C

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

Jun 27, 2018 in Blockchain by Shashank
• 10,400 points
526 views
0 votes
1 answer

How to use Blockchain to store records and secure transactions between government and users and also between 2 users?

As I understood you are planning to ...READ MORE

Jun 27, 2018 in Blockchain by aryya
• 7,450 points
474 views
+1 vote
1 answer

What are the differences between the hyperledger and Blockchain?

To answer your first query.. Blockchain is ...READ MORE

Apr 5, 2018 in Blockchain by anonymous
4,014 views
0 votes
1 answer

How to get current block number in parity?

You can get the latest block number ...READ MORE

Jun 8, 2018 in Blockchain by Christine
• 15,790 points
1,273 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
901 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
649 views
0 votes
1 answer

Ethereum Token Nam Redundancy

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

Jun 27, 2018 in Blockchain by aryya
• 7,450 points
391 views
0 votes
1 answer

How to connect two instances of Hyperledger Fabric?

Before getting on with your question, let ...READ MORE

Jun 11, 2018 in Blockchain by Christine
• 15,790 points
1,048 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 aryya
• 7,450 points
660 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 27, 2018 in Blockchain by Perry
• 17,100 points
383 views
0 votes
1 answer

Windows not able to recognize Monax command

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

Jun 22, 2018 in Blockchain by Johnathon
• 9,090 points
596 views
0 votes
1 answer

How can I communicate with peer to peer in a hyperledger fabric local network?

The peers communicate among them through the ...READ MORE

May 24, 2018 in Blockchain by Johnathon
• 9,090 points
1,804 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 21, 2018 in Blockchain by charlie_brown
• 7,720 points
611 views
+15 votes
2 answers

What are the various blockchain smart contracts platforms?

While Ethereum is the most popular platform ...READ MORE

Mar 27, 2018 in Blockchain by Johnathon
• 9,090 points
1,032 views
+1 vote
1 answer

Security Properties of Hash Functions

The difference is indeed subtle. I understood ...READ MORE

Mar 27, 2018 in Blockchain by Johnathon
• 9,090 points
4,253 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 22, 2018 in Blockchain by Johnathon
• 9,090 points
533 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
676 views
+1 vote
2 answers

Can I include real world data in a smart contract? If so, how?

You cant access/embed real world data using ...READ MORE

Jul 18, 2018 in Blockchain by sapan
971 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
• 69,230 points
682 views
0 votes
1 answer

NPM Error While Installing Lisk Dependencies

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

Jun 19, 2018 in Blockchain by charlie_brown
• 7,720 points
593 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 aryya
• 7,450 points
522 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
691 views
+1 vote
2 answers

How a merkle tree is generated?

In a Merkle tree, transaction IDs (txid) ...READ MORE

Apr 5, 2018 in Blockchain by Shashank
• 10,400 points
969 views
0 votes
1 answer

Can smart contract have token balance?

Smart contracts can receive and send tokens ...READ MORE

May 31, 2018 in Blockchain by Shashank
• 10,400 points
1,321 views
+1 vote
1 answer

What problem does pow(proof of work) solves in blockchain?

Proof of Work: When a miner gets a ...READ MORE

Aug 6, 2018 in Blockchain by digger
• 26,740 points
987 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
• 17,100 points
495 views
0 votes
1 answer

How do I develop a supply chain DApp on Blockchain?

Either of the ways is acceptable but ...READ MORE

May 30, 2018 in Blockchain by Perry
• 17,100 points
1,353 views
0 votes
1 answer

PROTOBUF_INLINE_NOT_IN_HEADERS

I had the same problem on Ubuntu ...READ MORE

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

How one can implement blockchain for android development??

Essentially you need to understand what is ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
560 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
558 views
0 votes
1 answer

Understanding Hyperledger transaction verification

 HL v0.x, the consensus process 'validates' transactions ...READ MORE

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

How can I modify hyperledger's blockchain endorsement policy?

The number of peers is of lesser ...READ MORE

Jun 4, 2018 in Blockchain by Shashank
• 10,400 points
1,027 views