Most answered questions in Blockchain

+1 vote
1 answer

Is it possible to store blockchain in a sql or no-sql database?

Currently, following are the options to store ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points
edited Aug 9, 2018 by Omkar • 816 views
0 votes
1 answer

In a Blockchain, how difficult is it to modify the third to last block?

Technically, it's not difficult at all, all ...READ MORE

Apr 20, 2018 in Blockchain by Christine
 • 15,790 points • 837 views
0 votes
1 answer

How can i create a simple P2P network on a blockchain?

To develop your own cryptocurrency, you need ...READ MORE

Apr 20, 2018 in Blockchain by Christine
 • 15,790 points • 1,744 views
0 votes
1 answer

How do I query Blockchain bitcoin locally?

You could use json RPC provided by ...READ MORE

Apr 19, 2018 in Blockchain by Christine
 • 15,790 points • 1,368 views
0 votes
1 answer

What do we mean by a validating peer?

The term validating peer was used in ...READ MORE

Apr 19, 2018 in Blockchain by Christine
 • 15,790 points • 907 views
+1 vote
1 answer

How does a blockchain work in hyperledger framework?

Hyperledger Composer simplifies application development on top ...READ MORE

Apr 19, 2018 in Blockchain by Christine
 • 15,790 points • 783 views
0 votes
1 answer

Transaction cost variations in one contract vs. multiple contracts

You are free to choose whatever works ...READ MORE

Apr 19, 2018 in Blockchain by Christine
 • 15,790 points • 617 views
0 votes
1 answer

How can I write complex decentralized applications on Etheruem?

Well, if you want to create a ...READ MORE

Apr 18, 2018 in Blockchain by Perry
 • 17,100 points • 486 views
0 votes
1 answer

How secure is to implement blockchain at a smaller scale??

Blockchain relies on the number of nodes ...READ MORE

Apr 18, 2018 in Blockchain by Perry
 • 17,100 points • 513 views
+1 vote
1 answer

How can I modify stored data in blockchain??

One of the important feature of a ...READ MORE

Apr 18, 2018 in Blockchain by Christine
 • 15,790 points • 5,748 views
0 votes
1 answer

Is it possible to setup private ethereum network for creating applications??

yes, ethereum is an open source platform ...READ MORE

Apr 18, 2018 in Blockchain by Christine
 • 15,790 points • 568 views
0 votes
1 answer

Distinguish between private blockchains and hashgraph, ripple

Most of the distributed databases are fault ...READ MORE

Apr 18, 2018 in Blockchain by Christine
 • 15,790 points • 354 views
+1 vote
1 answer

How is it possible to achieve privacy and confidentiality in smart contracts??

Any contract code written on the blockchain ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points
edited Aug 7, 2018 by Omkar • 717 views
+1 vote
1 answer

What are the differences between blockchain programming and our traditional programming languages?

On higher level comparison, there are quite ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points • 1,058 views
+1 vote
1 answer

How can I initiate a transaction on ethereum private network using mobile device?

There is no android wallet to connect ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points • 711 views
0 votes
1 answer

What is the difference between if() and require() statement in solidity??

If() and require() have separate functions and ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points • 4,803 views
+1 vote
1 answer

Where does hyperledger stores stores assets and participants??

There are two places where hyperledger stores ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points • 605 views
+1 vote
1 answer

How to setup testnet environment in Ethereum??

You can connect to a node using ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points • 604 views
+1 vote
1 answer

How can I connect my main Ethereum network to Web3.py using python?

All you need to do is enter ...READ MORE

Apr 17, 2018 in Blockchain by Perry
 • 17,100 points • 1,180 views
+1 vote
1 answer

Hyperledger - How can I use transaction certificates to enforce privacy?

The transaction certificates don't actually address privacy ...READ MORE

Apr 17, 2018 in Blockchain by Perry
 • 17,100 points • 679 views
+1 vote
1 answer

How is data retrieved in Ethereum?

Blockchain uses the concept of Merkle trees ...READ MORE

Apr 16, 2018 in Blockchain by Shashank
 • 10,400 points • 718 views
+1 vote
1 answer

In public blockchains each computer normal user maintain the ledger, is it scalable enough to do so?

To access or use the blockchain you ...READ MORE

Apr 12, 2018 in Blockchain by Johnathon
 • 9,090 points • 466 views
+1 vote
1 answer

Why is it so difficult to find a nonce while validating a block in Bitcoin?

A nonce is just "some arbitrary number". In ...READ MORE

Apr 11, 2018 in Blockchain by Perry
 • 17,100 points • 1,892 views
+1 vote
1 answer

What are the key functional differences between Hyperledger Composer and Fabric Javascript SDK?

Hyperledger Composer is an application development framework ...READ MORE

Apr 11, 2018 in Blockchain by Perry
 • 17,100 points • 1,367 views
+1 vote
1 answer

How do i generate corda nodes keystores in dev mode?

In Corda, the node will look into ...READ MORE

Apr 11, 2018 in Blockchain by Perry
 • 17,100 points • 1,356 views
+1 vote
1 answer

How Blockchain work in a mobile app?

At present there is no provision to ...READ MORE

Apr 10, 2018 in Blockchain by Johnathon
 • 9,090 points • 413 views
+1 vote
1 answer

How to decide on a nonce while developing a blockchain?

A nonce should be decided on the ...READ MORE

Apr 10, 2018 in Blockchain by Shashank
 • 10,400 points • 972 views
+1 vote
1 answer

How do i change the names of validating peers in IBM Bluemix blockchain?

IBM Bluemix Blockchain service Hyperledger Fabric v0.6 will ...READ MORE

Apr 11, 2018 in Blockchain by Perry
 • 750 views
0 votes
1 answer

Can a hacker change data of a smart sontract without call contract function?

A contract's content cannot be changed internally. ...READ MORE

Apr 8, 2018 in Blockchain by Shashank
 • 10,400 points • 472 views
0 votes
1 answer

What are the differences between tendermint and hashgraph?

Hashgraph uses Superior distributed ledger technology. Hashgraph ...READ MORE

Apr 8, 2018 in Blockchain by Shashank
 • 10,400 points • 831 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 • 914 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
 • 616 views
+1 vote
1 answer

Do we need metamask extension to make transactions on ether?

Actually, we don't need Metamask. To make ...READ MORE

Apr 8, 2018 in Blockchain by Perry
 • 17,100 points • 1,055 views
+1 vote
1 answer

Can a data be altered in a blockchain without changing its hash?

Yes, it should work. The authentication practice ...READ MORE

Apr 8, 2018 in Blockchain by Shashank
 • 10,400 points • 628 views
+1 vote
1 answer

How blockchain nodes switches to another chain?

Each individual transaction is validated by every ...READ MORE

Apr 8, 2018 in Blockchain by Christine
 • 15,790 points • 629 views
+1 vote
1 answer

How hyperledger fabric is stored on a PC?

Firstly, your web application will interact with ...READ MORE

Apr 7, 2018 in Blockchain by Christine
 • 15,790 points • 621 views
+1 vote
1 answer

Can we copy a smart contract?

While the contract is open-source, if you ...READ MORE

Apr 7, 2018 in Blockchain by Christine
 • 15,790 points • 1,933 views
+1 vote
1 answer

How are blocks are mined and shared among all Validating Peers in the Hyperledger network.

Hyperledger peers neither mine the block nor ...READ MORE

Apr 7, 2018 in Blockchain by Christine
 • 15,790 points • 499 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
 • 3,952 views
+1 vote
1 answer

Hyperledger network roles assigned to peer nodes.

In a hyperledger fabric network transactions are ...READ MORE

Apr 4, 2018 in Blockchain by Christine
 • 15,790 points • 1,111 views
0 votes
1 answer

If a different chaincode deployed a world state variable, is it still accessible by another chaincode?

No, variables stored by some chaincode (A) ...READ MORE

Apr 4, 2018 in Blockchain by Perry
 • 17,100 points • 600 views
+1 vote
1 answer

I would like to create a blockchain network which will stay at the same level of complexity, is it possible?

You can very easily create a cryptocurrency having a ...READ MORE

Apr 4, 2018 in Blockchain by Christine
 • 15,790 points • 658 views
0 votes
1 answer

How to create a new wallet on a blockchain?

Firstly, you need to have a clear ...READ MORE

Apr 4, 2018 in Blockchain by Christine
 • 15,790 points • 1,124 views
+1 vote
1 answer

How is a smart contract stored on a Blockchain?

Smart contract template and transaction events are ...READ MORE

Apr 4, 2018 in Blockchain by Christine
 • 15,790 points • 903 views
+1 vote
1 answer

How does different blockchains differs on the basis of protocols?

Blockchain platforms differs in more than many ...READ MORE

Apr 4, 2018 in Blockchain by Shashank
 • 10,400 points • 463 views
+1 vote
1 answer

How is Blockchain used for provenance purposes?

Let me tell you how Blockchain could ...READ MORE

Apr 4, 2018 in Blockchain by Shashank
 • 10,400 points • 471 views
+2 votes
1 answer

Blockchain declining my API key and I cannot understand why.

It's quite easy. Request the API key using ...READ MORE

Apr 3, 2018 in Blockchain by Christine
 • 15,790 points • 1,804 views
+1 vote
1 answer

Unable to send payment using API. Please help.

Firstly, check your passwords, your API code and your wallet ...READ MORE

Apr 3, 2018 in Blockchain by Christine
 • 15,790 points • 890 views
+1 vote
1 answer

Transaction using Blockchain wallet APi

Each transaction requires a fee to be ...READ MORE

Jun 19, 2018 in Blockchain by Perry
 • 17,100 points • 475 views
+1 vote
1 answer

What is Ethereum Blockchain? Where is it being used?

Blockchain is a decentralized distributed database of immutable records, ...READ MORE

Apr 3, 2018 in Blockchain by Christine
 • 15,790 points • 799 views
Page:

Most popular tags

"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.