Trending questions in Blockchain

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How one can implement blockchain for android development??

Essentially you need to understand what is ...READ MORE

Jun 16, 2018 in Blockchain by charlie_brown
• 7,720 points
39 views
+15 votes
2 answers

What are the various blockchain smart contracts platforms?

While Ethereum is the most popular platform ...READ MORE

Mar 26, 2018 in Blockchain by Johnathon
• 9,080 points
135 views
0 votes
1 answer

How to get current block number in parity?

You can get the latest block number ...READ MORE

Jun 8, 2018 in Blockchain by Christine
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226 views
0 votes
1 answer

How to connect two instances of Hyperledger Fabric?

Before getting on with your question, let ...READ MORE

Jun 11, 2018 in Blockchain by Christine
• 15,790 points
91 views
0 votes
1 answer

Does each DApp has its own separate Blockchain? Or can we develop multiple DApps on a single Blockchain platform?

A DApp is a decentralized Application. This ...READ MORE

Jun 11, 2018 in Blockchain by Christine
• 15,790 points
55 views
+1 vote
2 answers

Can I include real world data in a smart contract? If so, how?

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

Jul 17, 2018 in Blockchain by sapan
71 views
0 votes
1 answer

Understanding Hyperledger transaction verification

 HL v0.x, the consensus process 'validates' transactions ...READ MORE

Jun 7, 2018 in Blockchain by Christine
• 15,790 points
209 views
+1 vote
2 answers

How a merkle tree is generated?

In a Merkle tree, transaction IDs (txid) ...READ MORE

Apr 5, 2018 in Blockchain by Shashank
• 10,350 points
104 views
0 votes
1 answer

How to get the already existing channels in Hyperledger v1.0?

You cannot see all available channels,  but you ...READ MORE

Jun 4, 2018 in Blockchain by Perry
• 17,020 points
289 views
0 votes
1 answer

PROTOBUF_INLINE_NOT_IN_HEADERS

I had the same problem on Ubuntu ...READ MORE

Jun 7, 2018 in Blockchain by Christine
• 15,790 points
138 views
0 votes
1 answer

Issue deploying the business network using hyperledger composer

I had same issue. I created card ...READ MORE

Jun 5, 2018 in Blockchain by Johnathon
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221 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
• 9,080 points
217 views
0 votes
1 answer

How do I send back ethers to the sender of the tokens in a smart contract?

Whenever a smart contract receives ether via ...READ MORE

May 30, 2018 in Blockchain by Perry
• 17,020 points
447 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
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65 views
0 votes
1 answer

Unknown MSP DEFAULT error query chaincode

./byfn.sh -m up After running the above command, ...READ MORE

Jun 8, 2018 in Blockchain by Christine
• 15,790 points
42 views
0 votes
1 answer

How can I modify hyperledger's blockchain endorsement policy?

The number of peers is of lesser ...READ MORE

Jun 4, 2018 in Blockchain by Shashank
• 10,350 points
173 views
0 votes
1 answer

Why am I getting a grp timeout while setting up a Hyperledger development?

This error usually means that Validation Peer ...READ MORE

Jun 7, 2018 in Blockchain by Christine
• 15,790 points
52 views
0 votes
1 answer

Can I swap an ERC-20 token with a Neo NEP5 token using a smart contract?

Every Blockchain has a separate administration. So, it ...READ MORE

Jun 4, 2018 in Blockchain by Perry
• 17,020 points
92 views
+1 vote
2 answers

Hyperledger - Can I have some instances on one network while on a Virtual Box?

Yes, you can connect multiple instances to ...READ MORE

Aug 1, 2018 in Blockchain by Omkar
• 67,660 points
68 views
0 votes
1 answer

How is a request sent from an app to a smart contract?

Yes, the contract is distributed by every node ...READ MORE

Jun 4, 2018 in Blockchain by Perry
• 17,020 points
61 views
0 votes
1 answer

What happen to the mining fee for the blocks that are stale?

As I understood the forks of the ...READ MORE

Jun 4, 2018 in Blockchain by Shashank
• 10,350 points
39 views
0 votes
1 answer

Account not listed in the Deploy Contract screen?

You need to get an initial allocated ...READ MORE

Jun 4, 2018 in Blockchain by Perry
• 17,020 points
26 views
0 votes
1 answer

Is IPFS, blockchain a decentralized file system?

HTTP protocol is the most popular on ...READ MORE

May 31, 2018 in Blockchain by Shashank
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179 views
0 votes
1 answer

Geth account password on command line

You've got the following two ways to create ...READ MORE

May 29, 2018 in Blockchain by Perry
• 17,020 points
259 views
0 votes
1 answer

How do I develop a supply chain DApp on Blockchain?

Either of the ways is acceptable but ...READ MORE

May 30, 2018 in Blockchain by Perry
• 17,020 points
225 views
0 votes
1 answer

How can I communicate with peer to peer in a hyperledger fabric local network?

The peers communicate among them through the ...READ MORE

May 24, 2018 in Blockchain by Johnathon
• 9,080 points
459 views
+1 vote
2 answers

How is Blockchain programming languages different than usual programming?

The programming syntax of most of the ...READ MORE

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

How can I integrate ethereum wallet on my site??

you can use web3 js API to ...READ MORE

May 29, 2018 in Blockchain by Perry
• 17,020 points
211 views
0 votes
1 answer

What could be the best term to use for the collection of contracts in a .sol file?

module - don't think so. Because module ...READ MORE

Jun 1, 2018 in Blockchain by Shashank
• 10,350 points
38 views
0 votes
1 answer

where is ethereum contract instance state stored???

Migrating the state to a new version ...READ MORE

Jun 1, 2018 in Blockchain by Shashank
• 10,350 points
26 views
0 votes
1 answer

Can smart contract have token balance?

Smart contracts can receive and send tokens ...READ MORE

May 31, 2018 in Blockchain by Shashank
• 10,350 points
68 views
0 votes
1 answer

How to create a cryptocurrency based reward system using Ethereum?

I doubt that you'd need a decentralized ...READ MORE

May 30, 2018 in Blockchain by Shashank
• 10,350 points
101 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
• 15,790 points
174 views
0 votes
1 answer

how do we register our assets in hyperledger?

First of all, the chaincode (or smart ...READ MORE

May 25, 2018 in Blockchain by Johnathon
• 9,080 points
296 views
0 votes
1 answer

Curl Script Usage in Ethereum Blockcypher's API

You should store and keep the private ...READ MORE

May 28, 2018 in Blockchain by Christine
• 15,790 points
142 views
0 votes
1 answer

What if Gas required in my program exceeds the limit of 3000000?

Going through your code, I noticed that  you ...READ MORE

May 29, 2018 in Blockchain by Perry
• 17,020 points
77 views
0 votes
1 answer

Can I secretly add numbers in a smart contract and only add sum?

In am not sure about that, but ...READ MORE

May 30, 2018 in Blockchain by Shashank
• 10,350 points
19 views
0 votes
1 answer

Can we say that Applications on hyperledger fabric are centralized?

In practice, you would expect every Org ...READ MORE

May 28, 2018 in Blockchain by Johnathon
• 9,080 points
82 views
+1 vote
1 answer

What are the differences between coin and token?

Coins are cryptocurrencies that are independent and ...READ MORE

Jul 17, 2018 in Blockchain by Sahil
54 views
0 votes
1 answer

How can I synchronize smart contract on blockchain?

This is how it is on Blockchain. ...READ MORE

May 29, 2018 in Blockchain by Perry
• 17,020 points
34 views
0 votes
1 answer

How can I simulate private bitcoin network with random peer discovery?

You can model the whatever network you ...READ MORE

May 28, 2018 in Blockchain by Johnathon
• 9,080 points
48 views
+1 vote
2 answers

Hyperledger: get “/bin/bash: ./scripts/script.sh: No such file or directory” when running “./byfn -m up”

You can follow these steps : In your ...READ MORE

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

How is the ledger kept consistent among differnt peers in blockchain?

Bitcoin doesn't guarantee that all ledgers become ...READ MORE

May 25, 2018 in Blockchain by Johnathon
• 9,080 points
33 views
+1 vote
1 answer

Can Blocks be reorganized in the blockchain?

In practical applications, invalid transactions can not ...READ MORE

Jul 17, 2018 in Blockchain by Varun

edited Aug 3, 2018 by Omkar 46 views
0 votes
1 answer

Why do we use virtual machine for running smart contracts.

You can write smart contracts in any ...READ MORE

May 23, 2018 in Blockchain by Johnathon
• 9,080 points
91 views
0 votes
1 answer

How Bitcoin wallet find unspent transaction output(UTXOs)?

The wallet apps are connected to the ...READ MORE

May 22, 2018 in Blockchain by Shashank
• 10,350 points
107 views
0 votes
1 answer

What happens to the blockchain currency when nodes gets disconnected?

After the resync of the network, the ...READ MORE

May 21, 2018 in Blockchain by Johnathon
• 9,080 points
116 views
0 votes
1 answer

Can there be different smart contract with same logic or a master contract with all configuration?

It depends on the complexity of the ...READ MORE

May 23, 2018 in Blockchain by Johnathon
• 9,080 points
40 views
0 votes
1 answer

Can someone pls explain the hyperledger consensus?

The multiple peers determine the validity of ...READ MORE

May 22, 2018 in Blockchain by Shashank
• 10,350 points
37 views
0 votes
1 answer

Does the contract hosting account owns ether that is being sent to contract too??

I dont think so. I've done a ...READ MORE

May 21, 2018 in Blockchain by Johnathon
• 9,080 points
27 views