Trending questions in Blockchain

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How is computational and electricity wastage be avoided other than successful bitcoin miner?

What you are describing is an inherent ...READ MORE

Jul 13, 2018 in Blockchain by Shashank
• 10,350 points
19 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
• 26,550 points
30 views
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1 answer

How to use real world/live data in my smart contract?

You cant access/embed real world data using ...READ MORE

Jul 12, 2018 in Blockchain by digger
• 26,550 points
61 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
• 29,170 points
177 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
• 10,350 points
84 views
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1 answer

What exactly is BigChainDB?

Technically, BigChainDB internally uses RethinkDB as a ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,350 points
84 views
0 votes
1 answer

How to update data in Corda?

Yes, in corda you can store data ...READ MORE

Jul 11, 2018 in Blockchain by digger
• 26,550 points
79 views
0 votes
1 answer

How to control visibility of assets in Hyperledger Fabric?

you can use proof of Authority consensus ...READ MORE

Jul 10, 2018 in Blockchain by digger
• 26,550 points
120 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
• 26,550 points
31 views
0 votes
1 answer

How to retrieve complete world state of hyperledger?

you can achieve this by iteration process ...READ MORE

Jul 5, 2018 in Blockchain by slayer
• 29,170 points
328 views
+4 votes
3 answers

What type of database is blockchain?

Blockchain is a distributed database. what makes ...READ MORE

Mar 29, 2018 in Blockchain by Christine
• 15,790 points
72 views
0 votes
1 answer

How can I access the details of a given address from a blockchain?

There are two ways to actually do ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,350 points
57 views
0 votes
1 answer

Send Payment error in Blockchain API

The following code should help: $address = null; try ...READ MORE

Jul 6, 2018 in Blockchain by Perry
• 17,020 points
276 views
0 votes
1 answer

How to send chaincode error to the calling application?

To pass message all the way to ...READ MORE

Jul 6, 2018 in Blockchain by digger
• 26,550 points
272 views
+4 votes
3 answers

What are the implementations of IBM blockchain?

IBM is an open source community of ...READ MORE

Mar 29, 2018 in Blockchain by Christine
• 15,790 points
65 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
• 67,660 points
396 views
0 votes
1 answer

Where are the transaction details of a smart contract is written in Ethereum?

First ques:where in the blockchain is a ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,350 points
46 views
0 votes
1 answer

How Hyperledger projects are different from each other?

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

Jul 11, 2018 in Blockchain by shweta
• 440 points
31 views
0 votes
1 answer

how to learn writing java code for Hyperledger Fabric?

You can learning writing java codes for ...READ MORE

Jul 10, 2018 in Blockchain by slayer
• 29,170 points
90 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
• 10,350 points
40 views
0 votes
1 answer

Include real world data in smart contract

What you are looking for is an ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,350 points
39 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
• 10,350 points
36 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
• 26,550 points
35 views
0 votes
1 answer

How do I ensure that the token name is not redundant?

From my experience no, the trick is ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
• 10,350 points
28 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
• 29,170 points
27 views
0 votes
1 answer

Why is Nubits faster than Bitcoin?

Different implementation of blockchain can have different ...READ MORE

Jul 11, 2018 in Blockchain by digger
• 26,550 points
27 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
• 26,550 points
241 views
+3 votes
2 answers

How to run ethereumjs using Node.JS

You need to install testrpc globally on ...READ MORE

Mar 27, 2018 in Blockchain by ned_crew
• 1,620 points
160 views
0 votes
1 answer

Hyperledger remove asset

Data on a blockchain won't ever be ...READ MORE

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

What is the peer node start in hyperledger?

Nodes are the fundamental element of the ...READ MORE

Jul 9, 2018 in Blockchain by digger
• 26,550 points
93 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
• 26,550 points
44 views
0 votes
1 answer

How to transact custom token instead of ethers using JSON rpc?

First create your custom token. Then develop ...READ MORE

Jul 10, 2018 in Blockchain by digger
• 26,550 points
43 views
+1 vote
2 answers

Is there any relation between the number of transactions processes and the miners?

the direct answer to your query is ...READ MORE

Jun 19, 2018 in Blockchain by Perry
• 17,020 points
49 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
• 29,170 points
81 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
• 29,170 points
205 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
• 29,170 points
30 views
0 votes
1 answer

How to upload data from PC or sensors to blockchain?

you can do it by writing a ...READ MORE

Jul 9, 2018 in Blockchain by slayer
• 29,170 points
60 views
0 votes
1 answer

How i can use nodejs to watch transactions in bitcoin network?

you can use  const Socket = require('blockchain.info/Socket'); const mySocket ...READ MORE

Jul 9, 2018 in Blockchain by digger
• 26,550 points
55 views
+1 vote
1 answer

How to write an ERC 721 contract?

You could go through the following links:  https://github. ...READ MORE

Jun 28, 2018 in Blockchain by Perry
• 17,020 points
489 views
0 votes
1 answer

Error connecting due to rpc error

In the previous version, this problem was ...READ MORE

Jul 6, 2018 in Blockchain by slayer
• 29,170 points
177 views
0 votes
1 answer

What is blockchain apart from bitcoin?

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

Jul 9, 2018 in Blockchain by digger
• 26,550 points
29 views
0 votes
1 answer

How to set web3 solidity variable value?

The setLog transaction has not yet been mined by ...READ MORE

Jul 6, 2018 in Blockchain by Christine
• 15,790 points
156 views
0 votes
1 answer

AttributeError while trying to start peer port in Hyperledger.

If you are new to blockchain then ...READ MORE

Jul 9, 2018 in Blockchain by digger
• 26,550 points
26 views
0 votes
2 answers

How to set permissions within a blockchain?

There are blockchains that allow defining permissions. Hyperledger ...READ MORE

Aug 28, 2018 in Blockchain by Michael
79 views
0 votes
1 answer

In Hyperledger fabric, how does committer validate the transaction?

Endorsing and committing are just two functions ...READ MORE

Jul 3, 2018 in Blockchain by Omkar
• 67,660 points
259 views
0 votes
1 answer

Updating data of struct to save in chaincode.

You can use a code similar to ...READ MORE

Jul 5, 2018 in Blockchain by slayer
• 29,170 points
170 views
0 votes
1 answer

How read-write sets is used in hyperledger?

You can find the explaination about it ...READ MORE

Jul 3, 2018 in Blockchain by digger
• 26,550 points
247 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
• 67,660 points
416 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
• 26,550 points
138 views
0 votes
1 answer

Error while trying to create dir if missing: mkdir /var/hyperledger: permission denied

The following commands should help: sudo mkdir -p ...READ MORE

Jul 6, 2018 in Blockchain by Christine
• 15,790 points
93 views