Trending questions in Blockchain

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1 answer

Looking for a simple Blockchain PoC to implement on a office level

Hyperledger has been collecting some use cases, though not ...READ MORE

Jul 24, 2018 in Blockchain by aryya
 • 7,450 points • 687 views
0 votes
1 answer

How do I calculate number of full nodes in bitcoins/altcoins?

You can not calculate/estimate the total number ...READ MORE

Jul 17, 2018 in Blockchain by Shashank
 • 10,400 points • 985 views
+4 votes
5 answers

How is Blockchain a distributed database?

Think of blockchain as a relatively slow, ...READ MORE

Mar 26, 2018 in Blockchain by Christine
 • 15,790 points • 1,238 views
0 votes
1 answer

How to use two different APIs to get combined results?

You can use nesting of function to ...READ MORE

Jul 31, 2018 in Blockchain by slayer
 • 29,350 points • 364 views
0 votes
1 answer

In PBFT view change what happens to committed operations after a valid snapshot?

I think that those messages are executed ...READ MORE

Jul 27, 2018 in Blockchain by aryya
 • 7,450 points • 566 views
0 votes
1 answer

Error in playground while committing transaction on the ledger

1. Is this transaction is trying to ...READ MORE

Jul 27, 2018 in Blockchain by shweta
 • 440 points • 518 views
0 votes
1 answer

"const is reserved" parse error.

It could be an error because of ...READ MORE

Jul 6, 2018 in Blockchain by slayer
 • 29,350 points • 1,423 views
0 votes
1 answer

Unable to create a Mist connection to a private Ethereum Blockchain.

You could do the following: 1. Start another ...READ MORE

Jul 26, 2018 in Blockchain by Perry
 • 17,100 points • 561 views
0 votes
1 answer

how to get modification history of asset?

You can use GetHistoryForKey() API as shown ...READ MORE

Jul 9, 2018 in Blockchain by digger
 • 26,740 points • 1,293 views
0 votes
1 answer

How blockchain hides it's HTML source?

When you click View Source, you see ...READ MORE

Jul 17, 2018 in Blockchain by Shashank
 • 10,400 points • 942 views
0 votes
1 answer

What is transientMap in node.js and getTransient in chaincode?

TransientMap: TransientMap  contains data that might be used to ...READ MORE

Jul 13, 2018 in Blockchain by digger
 • 26,740 points • 1,110 views
0 votes
1 answer

Error in generating network sample.

I resolved this issue by downloading the ...READ MORE

Jul 26, 2018 in Blockchain by Perry
 • 17,100 points • 538 views
0 votes
1 answer

How to develop peer to peer network in hyperledger fabric?

There are two ways you can do ...READ MORE

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 1,219 views
0 votes
1 answer

Can I use inherited contract in artifacts.require() statement?

Yes, this code will work just fine. ...READ MORE

Jul 27, 2018 in Blockchain by digger
 • 26,740 points • 477 views
0 votes
1 answer

How to check Bitcoin Wallet ?

This can be done using Extended Public ...READ MORE

Jul 13, 2018 in Blockchain by Perry
 • 17,100 points • 1,070 views
0 votes
1 answer

Can i transfer Kraken to Poloniex?

You can use withdrawFunds method from the ...READ MORE

Jul 24, 2018 in Blockchain by slayer
 • 29,350 points • 600 views
0 votes
1 answer

How to connect javascript to solidity/ethereum?

You can connect javascript to solidity by ...READ MORE

Jul 11, 2018 in Blockchain by digger
 • 26,740 points • 1,158 views
0 votes
1 answer

How to create own coins in Blockchain Ethereum wallet?

To create own coins you have to ...READ MORE

Jul 26, 2018 in Blockchain by slayer
 • 29,350 points • 509 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 • 4,789 views
0 votes
1 answer

AWS multichain network, "Couldn't connect to the seed node" error

The error says "please check multichaind is ...READ MORE

Jul 9, 2018 in Blockchain by slayer
 • 29,350 points • 1,229 views
0 votes
1 answer

How to understand transaction verification in blockchain

They said it takes about 10 minutes ...READ MORE

Jul 17, 2018 in Blockchain by aryya
 • 7,450 points • 884 views
0 votes
1 answer

How to interact with blockchain using Java web app?

You can interact with the blockchain using ...READ MORE

Jul 16, 2018 in Blockchain by digger
 • 26,740 points • 920 views
0 votes
1 answer

Getting error while trying to submit a transaction on hyperledger playground

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

Jul 17, 2018 in Blockchain by Shashank
 • 10,400 points • 867 views
0 votes
2 answers

Can a blockchain be used to verify or store a document on the blockchain?

This link could help you. READ MORE

Aug 28, 2018 in Blockchain by Suman
 • 1,356 views
0 votes
1 answer

How can I build a hexadecimal block if I have all the needed information?

Here you have some articles about bitcoin ...READ MORE

Jul 21, 2018 in Blockchain by Christine
 • 15,790 points • 707 views
0 votes
1 answer

How should I set my mac to install "hyperledger composer playground locally" ?

Install the pre-reqs https://hyperledger.github.io/composer/in ...READ MORE

Jul 21, 2018 in Blockchain by Christine
 • 15,790 points • 705 views
0 votes
1 answer

Error while adding participant to local application.

Do the following to solve the problem composer ...READ MORE

Jul 25, 2018 in Blockchain by digger
 • 26,740 points • 504 views
0 votes
1 answer

How to set up Hyperledger Fabric v0.6 network without docker?

Hyperledger Fabric v0.6 does not provide any ...READ MORE

Jul 9, 2018 in Blockchain by slayer
 • 29,350 points • 1,192 views
0 votes
1 answer

Can a hyperledger composer work without fabric installed?

The pre-requisites section of hyperledger composer explains ...READ MORE

Jul 24, 2018 in Blockchain by digger
 • 26,740 points • 523 views
0 votes
1 answer

Differences between the composer network and composer identity

'Composer Network' represents the business network entity. ...READ MORE

Jul 25, 2018 in Blockchain by Johnathon
 • 9,090 points • 475 views
0 votes
2 answers

How is a transaction public key related to original public?

The details like account balance, nonce etc., ...READ MORE

Jul 24, 2018 in Blockchain by digger
 • 26,740 points • 477 views
0 votes
1 answer

Not able to deploy smart contract on testrpc.

I attached to geth using the following ...READ MORE

Jul 23, 2018 in Blockchain by digger
 • 26,740 points • 554 views
0 votes
1 answer

Trying to setup a hyperledger but REST API is throwing error

Not sure if you are still looking ...READ MORE

Jul 25, 2018 in Blockchain by aryya
 • 7,450 points • 488 views
0 votes
1 answer

How to send ethers to a contract?

Transfer of tokens means you will deduct ...READ MORE

Jul 25, 2018 in Blockchain by charlie_brown
 • 7,720 points • 436 views
0 votes
1 answer

Hyperledger: How to test endorsement policy for the business network in multiple organizations?

Give the proposal responses you are receiving ...READ MORE

Jul 13, 2018 in Blockchain by Perry
 • 17,100 points • 940 views
0 votes
1 answer

Is {from: thesponsor, value: 10000000, gas: 3000000} considered as a transaction object?

Yes, {from: thesponsor, value: 10000000, gas: 3000000} ...READ MORE

Jul 25, 2018 in Blockchain by digger
 • 26,740 points • 430 views
0 votes
1 answer

How blocks are linked in the Hyperledger Fabric blockchain?

The structure of block in Hyperledger Fabric ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,210 points • 1,375 views
0 votes
1 answer

How can I retrieve to and from address in transaction directly from blockchain?

The spending conditions, i.e., who is able ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
 • 10,400 points • 1,026 views
0 votes
1 answer

Ethereum Studio: Can't find Sandbox

The GitHub project site says that the image is ...READ MORE

Jul 20, 2018 in Blockchain by Christine
 • 15,790 points • 625 views
0 votes
1 answer

How to display State Information to a list of participants dynamically?

The if condition mentioned below will never ...READ MORE

Jul 23, 2018 in Blockchain by Omkar
 • 69,210 points • 556 views
0 votes
1 answer

Why visual studio 2015 can not open blockchain api project on github

If you look in the solution file ...READ MORE

Jul 24, 2018 in Blockchain by aryya
 • 7,450 points • 444 views
0 votes
1 answer

How do I get the total amount sent to an address?

If you are using web3JS you can ...READ MORE

Jul 19, 2018 in Blockchain by Johnathon
 • 9,090 points • 697 views
0 votes
1 answer

What is CA (Authority) in Hyperledger Fabric?

Hyperledger fabric includes a modular Certificate Authority ...READ MORE

Jul 12, 2018 in Blockchain by shweta
 • 440 points • 964 views
0 votes
1 answer

What is the maximum number of nodes in corda?

No, there is no restriction of he ...READ MORE

Jul 11, 2018 in Blockchain by slayer
 • 29,350 points • 1,002 views
0 votes
1 answer

how can i convert stub.GetTxTimestamp() to type string?

You can not directly convert the timestamp ...READ MORE

Jul 5, 2018 in Blockchain by digger
 • 26,740 points • 1,242 views
0 votes
1 answer

Where is the hyperlewdger fabric endorsement policy stored?

I don't know exactly where is the ...READ MORE

Jul 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,348 views
0 votes
1 answer

How proof work prevents rebuilding of blockchain?

POS has the same idea as POW. ...READ MORE

Jul 24, 2018 in Blockchain by Shashank
 • 10,400 points • 439 views
0 votes
1 answer

Display the state information to a list of participants dynamically.

There might be a bug in your ...READ MORE

Jul 24, 2018 in Blockchain by Christine
 • 15,790 points • 409 views
0 votes
1 answer

Hyperledger Composer error in transaction

Check that you have declare the function ...READ MORE

Jul 21, 2018 in Blockchain by shweta
 • 440 points • 565 views
0 votes
1 answer

Hyperledger-Fabric Endorsement Policy: What are Members and Admins?

The goal of endorsement policy to set ...READ MORE

Jul 13, 2018 in Blockchain by Christine
 • 15,790 points • 869 views
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