Trending questions in Blockchain

+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 • 4,778 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 • 1,500 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 • 1,047 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
 • 1,509 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 • 1,032 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 • 1,585 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
 • 7,460 points • 753 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 • 768 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 • 1,199 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 • 1,432 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 • 1,529 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 • 1,037 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
 • 7,460 points
edited Nov 13, 2024 by Khan Sarfaraz • 651 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 • 2,109 views
0 votes
1 answer

How can I deploy a HelloWorld contract on my testrpc network?

The problem lies in the command: truffle migrate Your truffle migrate command ...READ MORE

Apr 27, 2018 in Blockchain by Perry
 • 17,100 points
edited Aug 10, 2018 by Omkar • 3,259 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
 • 7,460 points • 940 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 • 1,322 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
 • 69,220 points • 1,071 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 • 905 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 • 619 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 • 804 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 • 1,380 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 • 1,382 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 • 982 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 • 1,293 views
0 votes
1 answer

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

I have recently reviewed Exonum framework  and ...READ MORE

Jun 19, 2018 in Blockchain by Perry
 • 17,100 points • 841 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
 • 7,460 points • 788 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 • 1,666 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 • 830 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 • 910 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 • 1,576 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 • 1,254 views
0 votes
1 answer

Curl Script Usage in Ethereum Blockcypher's API

You should store and keep the private ...READ MORE

May 28, 2018 in Blockchain by Christine
 • 15,790 points • 1,656 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 • 833 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 • 1,295 views
+1 vote
2 answers

How is Blockchain programming languages different than usual programming?

The programming syntax of most of the ...READ MORE

Mar 30, 2018 in Blockchain by Christine
 • 15,790 points • 1,295 views
+1 vote
1 answer

Getting issues while Sending signTransaction with web3.js

The chain ID for ropsten is 3. ...READ MORE

Mar 28, 2018 in Blockchain by Johnathon
 • 9,090 points • 4,124 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 • 713 views
0 votes
1 answer

Issue deploying the business network using hyperledger composer

I had same issue. I created card ...READ MORE

Jun 5, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,140 views
0 votes
1 answer

Unknown MSP DEFAULT error query chaincode

./byfn.sh -m up After running the above command, ...READ MORE

Jun 8, 2018 in Blockchain by Christine
 • 15,790 points • 961 views
0 votes
1 answer

Can I swap an ERC-20 token with a Neo NEP5 token using a smart contract?

Every Blockchain has a separate administration. So, it ...READ MORE

Jun 4, 2018 in Blockchain by Perry
 • 17,100 points • 1,134 views
+1 vote
2 answers

Hyperledger - Can I have some instances on one network while on a Virtual Box?

Yes, you can connect multiple instances to ...READ MORE

Aug 1, 2018 in Blockchain by Omkar
 • 69,220 points • 1,091 views
+1 vote
1 answer

Which data structure to prefer to model a blockchain?

To start with, let me tell you ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 2,925 views
0 votes
1 answer

Why am I getting a grp timeout while setting up a Hyperledger development?

This error usually means that Validation Peer ...READ MORE

Jun 7, 2018 in Blockchain by Christine
 • 15,790 points • 881 views
0 votes
1 answer

What happens to the blockchain currency when nodes gets disconnected?

After the resync of the network, the ...READ MORE

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

How can I synchronize smart contract on blockchain?

This is how it is on Blockchain. ...READ MORE

May 29, 2018 in Blockchain by Perry
 • 17,100 points • 1,247 views
0 votes
1 answer

Is IPFS, blockchain a decentralized file system?

HTTP protocol is the most popular on ...READ MORE

May 31, 2018 in Blockchain by Shashank
 • 10,400 points • 1,133 views
0 votes
1 answer

How is a request sent from an app to a smart contract?

Yes, the contract is distributed by every node ...READ MORE

Jun 4, 2018 in Blockchain by Perry
 • 17,100 points • 892 views
0 votes
1 answer

How is the ledger kept consistent among differnt peers in blockchain?

Bitcoin doesn't guarantee that all ledgers become ...READ MORE

May 26, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,288 views
+1 vote
1 answer

What are the differences between coin and token?

Coins are cryptocurrencies that are independent and ...READ MORE

Jul 18, 2018 in Blockchain by Sahil
 • 1,136 views
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