Trending questions in Blockchain

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1 answer

composer network start with error SERVICE_UNAVAILABLE

I think there is an issue with ...READ MORE

Jul 6, 2018 in Blockchain by aryya
 • 7,460 points • 1,707 views
0 votes
1 answer

Should I require a specific condition when working with indexes in Solidity?

You are using it correctly. require is intended to ...READ MORE

Jul 17, 2018 in Blockchain by aryya
 • 7,460 points • 1,202 views
0 votes
1 answer

Can we store encrypted data into transaction?

Ethereum can store whatever bytes you want, ...READ MORE

Jul 17, 2018 in Blockchain by Christine
 • 15,750 points • 1,181 views
0 votes
1 answer

How Hyperledger projects are different from each other?

Hyperledger includes a range of business Blockchain ...READ MORE

Jul 12, 2018 in Blockchain by shweta
 • 440 points • 1,434 views
0 votes
1 answer

Hyperledger Fabric: "No go in PATH" error.

The error is because the go path ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,180 points • 2,031 views
0 votes
1 answer

Not Able to register a user with Hyperledger-Fabric v1.1 preview

The error: "Certificate not found with AKI 'e729224e8b3f31784c8a93c5b8ef6f4c1c91d9e6e577c45c33163609fe40011' ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
 • 7,720 points • 2,493 views
+1 vote
1 answer

What is blockchain apart from bitcoin?

Blockchain is a decentralized database where the ...READ MORE

Jul 9, 2018 in Blockchain by digger
 • 26,740 points • 1,461 views
0 votes
1 answer

How to use Blockchain to store government records?

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

Jul 18, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,107 views
0 votes
1 answer

IBM Container Service blockchain deployment error.

This error might be caused because of ...READ MORE

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 1,424 views
0 votes
1 answer

How to avoid Ethereum Token Name redundancy?

I dont think you can do anything ...READ MORE

Jul 12, 2018 in Blockchain by digger
 • 26,740 points • 1,335 views
+1 vote
1 answer

How can I add image into my Hyperledger instance

In your registry, you can Base64-ify your ...READ MORE

Jun 8, 2018 in Blockchain by aryya
 • 7,460 points • 2,747 views
0 votes
1 answer

What is the use of Ethereum's RLPx in Ethereum ecosystem?

So, RLPx is a protocol suite. It ...READ MORE

Jun 5, 2018 in Blockchain by Johnathon
 • 9,090 points • 2,917 views
0 votes
1 answer

Error while Querying System Chaincode.

Do not interact directly with the ledger.. ...READ MORE

Jul 12, 2018 in Blockchain by digger
 • 26,740 points • 1,317 views
0 votes
1 answer

What does "Using network 'develop'" mean?

It means that the name of the ...READ MORE

Jul 17, 2018 in Blockchain by slayer
 • 29,370 points • 1,099 views
0 votes
1 answer

How to create a ‘feeless’ ERC20 token?

You can't have another address pay for ...READ MORE

Jul 6, 2018 in Blockchain by aryya
 • 7,460 points • 1,602 views
0 votes
1 answer

Will blockchain be feasible in future when the ledgers will be of a larger size?

I read this post "Blockchains don’t scale. ...READ MORE

Jul 13, 2018 in Blockchain by digger
 • 26,740 points • 1,269 views
0 votes
1 answer

Error during Hyperledger installation: Manifest peer latest not found

Change the tag from latest to x86_64-1.0.2 in the compose file. ...READ MORE

Jul 13, 2018 in Blockchain by Perry
 • 17,100 points • 1,258 views
0 votes
1 answer

Can i use HTTP GET to call external service in Hyperledger Composer?

Right now, the Hyperledger Composer supports only ...READ MORE

Jul 16, 2018 in Blockchain by slayer
 • 29,370 points • 1,126 views
0 votes
1 answer

Where can I find the reference format for crypto-config.yaml and configtx.yaml Hyperledger Fabric files?

The sample config files in the Hyperledger ...READ MORE

Jun 27, 2018 in Blockchain by aryya
 • 7,460 points • 1,948 views
0 votes
1 answer

Can smart contract be altered after deployment?

No, you can not make changes to ...READ MORE

Jul 17, 2018 in Blockchain by digger
 • 26,740 points • 1,072 views
0 votes
1 answer

Sorting data into appropriate key in an object

I think that your code has an ...READ MORE

Jul 17, 2018 in Blockchain by aryya
 • 7,460 points • 1,063 views
+1 vote
2 answers

What if a bitcoin clients could create identical private keys?

If this happens, then Person B will ...READ MORE

Aug 28, 2018 in Blockchain by Evan
 • 1,558 views
0 votes
1 answer

How is consensus achieved in a Hyperledger Fabric?

The transactions in the network is ordered ...READ MORE

Jun 29, 2018 in Blockchain by Omkar
 • 69,180 points • 1,813 views
0 votes
1 answer

How can i copy block aspects in hyperledger fabric?

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

Jul 6, 2018 in Blockchain by digger
 • 26,740 points • 1,505 views
0 votes
1 answer

How to remove the previous BlockChain data?

One of the reasons preventing the blockchain ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
 • 69,180 points • 1,632 views
0 votes
1 answer

Web3j v3.3.1 : Error while generating compiled solidity smart contracts which returns array of struct

Solidity does not support returning structs in ...READ MORE

Jun 19, 2018 in Blockchain by aryya
 • 7,460 points • 2,229 views
0 votes
1 answer

How many people are mining bitcoins all over the world?

No, it's not possible to find out ...READ MORE

Jun 26, 2018 in Blockchain by Omkar
 • 69,180 points • 1,941 views
0 votes
1 answer

Not being able to deploy blockchain demo app on bluemix

The car lease demo's "Deploy to Bluemix" ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
 • 10,400 points • 1,269 views
0 votes
1 answer

How to store photos in Hyperledger smart contract?

To do this, you need to represent ...READ MORE

Jul 9, 2018 in Blockchain by slayer
 • 29,370 points • 1,353 views
0 votes
1 answer

why are permissions not stored in blockchain?

When a channel is created, the configurations ...READ MORE

Jul 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,308 views
0 votes
1 answer

repository hyperledger/fabric-tools not found: does not exist or no pull access

You can manually pull this (and any ...READ MORE

Jul 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,631 views
+1 vote
2 answers

How can a public proof of work be secured?

Bitcoin was the first implementation of blockchain, ...READ MORE

May 9, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,492 views
0 votes
1 answer

How to solve "Failed to get identity 'admin'" error?

It seems like this error is caused ...READ MORE

Jul 13, 2018 in Blockchain by slayer
 • 29,370 points • 1,152 views
0 votes
1 answer

How do I access the github repository for deploying blockchain on bluemix?

You start with creating a new project. ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
 • 10,400 points • 1,227 views
0 votes
1 answer

WireTransaction type mismatch in Corda.

On M14. checkSignature should take a DigitalSignature.WithKey.. ...READ MORE

Jul 11, 2018 in Blockchain by digger
 • 26,740 points • 1,231 views
0 votes
1 answer

How can I use IBM blockchain to store data?

I would recommend looking at the Fabric ...READ MORE

Jul 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,603 views
0 votes
1 answer

Where can i get bitcoins for testing?

You can get bitcoins for free for ...READ MORE

Jul 17, 2018 in Blockchain by digger
 • 26,740 points • 970 views
0 votes
1 answer

In hyperledger, how many number of ordering node can take up a transaction?

There are two types to implement ordering: 1. ...READ MORE

Jun 25, 2018 in Blockchain by Omkar
 • 69,180 points
edited Jun 28, 2018 by Omkar • 1,986 views
0 votes
1 answer

How to prevent the smart contract from being modified and deployed in the blockchain network?

To expand on Matthew's answer, each state ...READ MORE

Jul 6, 2018 in Blockchain by aryya
 • 7,460 points • 1,465 views
0 votes
1 answer

How to plug MSP,Consensus, Ordering service in Hyperledger Fabric?

To plug in MSP: Implement your own MSP ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,180 points • 1,808 views
+1 vote
3 answers

Is it possible to store data about arbitrary objects on the blockchain using smart contracts?

Basically you implement requested logic on by ...READ MORE

Aug 30, 2018 in Blockchain by Artem
 • 2,338 views
0 votes
1 answer

How does my peer communicate with fabric CA?

Peers do not communicate with CA directly.. ...READ MORE

Jul 6, 2018 in Blockchain by digger
 • 26,740 points • 1,401 views
0 votes
2 answers

How can I make transactions to a blockchain from a remote device(like a cell phone)?

You can do this by developing a ...READ MORE

Jun 27, 2018 in Blockchain by Omkar
 • 69,180 points • 1,724 views
0 votes
2 answers

Why does not India consider Bitcoin as a legal tender?

to be specific there are few logical ...READ MORE

Jul 3, 2018 in Blockchain by Priyaj
 • 58,020 points • 1,503 views
0 votes
1 answer

Why am I not getting 100 ethers in my metamask account?

Sorry that you're having this problem. To ...READ MORE

Jun 14, 2018 in Blockchain by Christine
 • 15,750 points • 3,051 views
0 votes
1 answer

Can cryptocurrency work without blockchain technology?

Cryptocurrency do not compulsorily require blockchain.. What ...READ MORE

Jul 11, 2018 in Blockchain by slayer
 • 29,370 points • 1,145 views
0 votes
1 answer

Hyperledger Fabric 1.0 how to maintain privacy from OSNs?

Yes, OSNs can see all the transaction ...READ MORE

Jul 2, 2018 in Blockchain by Omkar
 • 69,180 points • 1,515 views
0 votes
1 answer

"set RNG(RandomUtils.Random) before generating random numbers" error

Use the following code, you just have ...READ MORE

Jul 5, 2018 in Blockchain by slayer
 • 29,370 points • 1,395 views
0 votes
1 answer

In a non-cryptocurrency implementation of Blockchain, how to successfully mine a node?

Difficulty is a property of the blockchain, ...READ MORE

Jul 13, 2018 in Blockchain by Perry
 • 17,100 points • 1,041 views
0 votes
1 answer

How do i deploy a contract using bigchainDB?

Currently BigchainDB v.1.0.0 does not support Smart ...READ MORE

Jun 30, 2018 in Blockchain by Shashank
 • 10,400 points • 1,630 views
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