Trending questions in Blockchain

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How immutability is achieved in hyperledger fabric?

Since it is a private blockchain platform, ...READ MORE

Apr 21, 2018 in Blockchain by Perry
• 17,100 points
1,418 views
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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
2,004 views
0 votes
1 answer

How to check the data integrity logic in proof of work mining?

The proof of work is actually works ...READ MORE

May 8, 2018 in Blockchain by Johnathon
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670 views
0 votes
1 answer

Do I need to create a new validating peer once a new user join my network.?

Hyperledger has evolved a lot. The updated ...READ MORE

May 10, 2018 in Blockchain by Johnathon
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555 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
1,426 views
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How feasible is it to use one way cryptographic hash function?

you can use the ouput hash function ...READ MORE

May 8, 2018 in Blockchain by Johnathon
• 9,090 points
498 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
1,869 views
0 votes
1 answer

How can we decrypt a transaction payload when confidentiality is on?

You can try the following: you can only ...READ MORE

May 3, 2018 in Blockchain by Shashank
• 10,400 points
671 views
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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
1,497 views
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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
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1,235 views
0 votes
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What technologies can be used to build private blockchain technologies?

Blockchain could be private or public. There ...READ MORE

May 8, 2018 in Blockchain by Robbie
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1 answer

Why is it downloading the blocks when I am trying to deploy the ethereum private network?

Once you have installed the Ethereum wallet, ...READ MORE

May 3, 2018 in Blockchain by Shashank
• 10,400 points
520 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
1,423 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
1,114 views
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How to store state data in Ethereum blockchain?

You won't have to overwrite the whole ...READ MORE

Apr 25, 2018 in Blockchain by Shashank
• 10,400 points
789 views
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1 answer

Error while deploying chaincode in IBM Blockchain. Please help.

Try stripping out the 'tree/master' portion of ...READ MORE

Apr 26, 2018 in Blockchain by Christine
• 15,790 points
706 views
+1 vote
1 answer

How can nodes interact with a Smart Contract?

If you are using Remix IDE to ...READ MORE

Apr 27, 2018 in Blockchain by Perry
• 17,100 points
655 views
+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 916 views
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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
972 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
885 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
854 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 802 views
+1 vote
1 answer

How to deploy ethereum smart contracts on a website?

There are many ways to do this: 1 ...READ MORE

Mar 27, 2018 in Blockchain by Johnathon
• 9,090 points
1,746 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
775 views
0 votes
1 answer

How pbft is being used in blockchain?

PBFT can tolerate byzantine failures. For tolerating ...READ MORE

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

What happens if the controller nodes in Corda shuts down, will other nodes function independently?

If the network map goes offline nodes ...READ MORE

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

Is it that new bitcoins gets created with the every block mined??

Bitcoin mining means validation of a block ...READ MORE

Apr 21, 2018 in Blockchain by Perry
• 17,100 points
645 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
776 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
1,071 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
696 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
721 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
674 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
1,111 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
649 views
0 votes
1 answer

Where to store the data of decentralized applications??

Every blockchain is developed in a differnet ...READ MORE

Apr 21, 2018 in Blockchain by Perry
• 17,100 points
563 views
+1 vote
1 answer

How can I achieve a functionality where an action is performed after a payment is received?

See this can be achieved in more ...READ MORE

Apr 21, 2018 in Blockchain by Perry
• 17,100 points
522 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
1,204 views
0 votes
1 answer

Connection failed to Ethereum Ropsten Testnet network.

 It looks like your node isn't syncing ...READ MORE

Mar 27, 2018 in Blockchain by Christine
• 15,790 points
1,569 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
633 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
1,179 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
563 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
550 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
809 views
0 votes
1 answer

How to make sure transactions take no fee in a private Ethereum blockchain?

In a private ethereum network you have ...READ MORE

Mar 26, 2018 in Blockchain by Christine
• 15,790 points

edited Mar 26, 2018 by Christine 1,427 views
+2 votes
1 answer

What are the difference between various Hyperledger Projects?

Hyperledger incubates a plethora of business blockchain ...READ MORE

Mar 26, 2018 in Blockchain by Perry
• 17,100 points
1,333 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
875 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
971 views
+1 vote
1 answer

How blockchain node behaves upon receiving a new block when previous block wasn't acquired?

A node will ask for block number ...READ MORE

Mar 26, 2018 in Blockchain by Perry
• 17,100 points
1,354 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
385 views
0 votes
0 answers

What happens to the ethereum mempool transaction of uncle and fork nodes

I understand that in Bitcoin network when ...READ MORE

Apr 8, 2018 in Blockchain by Christine
• 15,790 points
868 views