Trending questions in Blockchain

0 votes
1 answer

Not able to attach geth.ipc: Fatal: Unable to attach to remote geth: connect: connection refused

You should not mention double quotes for ...READ MORE

Dec 6, 2018 in Blockchain by Omkar
 • 69,210 points • 2,785 views
+1 vote
1 answer

Return array of struct from a solidity function: "Expected type name function getPurchaseOrderForVendor" error

There's a typo in your code. The ...READ MORE

Oct 17, 2018 in Blockchain by Christine
 • 15,790 points • 4,901 views
0 votes
2 answers

How to use multiple anchor peers in an organization?

To use multiple anchor peers, you need ...READ MORE

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 2,648 views
+1 vote
1 answer

Hyperledger Fabric: Got permission denied Docker daemon socket at unix:///var/run/docker.sock

You are getting this error probably because ...READ MORE

Nov 19, 2018 in Blockchain by Omkar
 • 69,210 points • 3,430 views
0 votes
1 answer

web3.eth.sendSignedTransaction() always return “Returned error: nonce too low”

This bit of code looks wrong: var rawTx ...READ MORE

Oct 1, 2018 in Blockchain by slayer
 • 29,350 points • 5,593 views
0 votes
1 answer

How to create custom accounts in testrpc?

Yes, you can use testrpc to do ...READ MORE

Jan 27, 2019 in Blockchain by Omkar
 • 69,210 points • 476 views
0 votes
1 answer

Unexpected error: Cannot provision contracts while instantiating the console

This is a common problem with truffle ...READ MORE

Jan 23, 2019 in Blockchain by Omkar
 • 69,210 points • 617 views
+1 vote
2 answers

Where is custom chaincode path Hyperledger Fabric 1.0?

You have to have your chaincode at ...READ MORE

Jul 10, 2018 in Blockchain by slayer
 • 29,350 points • 2,723 views
0 votes
1 answer

Not able to use ERC721 token in my project

Like this error indicates, you have to ...READ MORE

Jan 23, 2019 in Blockchain by Omkar
 • 69,210 points • 606 views
–1 vote
1 answer

How to list ethereum accounts in RPC?

You can use the following command to ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
 • 69,210 points • 1,249 views
–1 vote
1 answer

User Identity Management in Ethereum using ERC725

The identity consists of two main parts: Keys ...READ MORE

Dec 28, 2018 in Blockchain by Omkar
 • 69,210 points • 1,761 views
0 votes
1 answer

How to interact with blockchain from web application?

You can use the Web3.js library to interact ...READ MORE

Jan 11, 2019 in Blockchain by Omkar
 • 69,210 points • 1,102 views
0 votes
0 answers

AXC: Conform to the trend of the times and to be a pioneer in the development of the industry

On January 2, 2019, Ali Baba DAMO ...READ MORE

Jan 23, 2019 in Blockchain by anonymous
retagged Jan 23, 2019 by Vardhan • 632 views
+1 vote
4 answers

What is hf.Registrar.Roles in fabric-ca-client command?

The "hf.Registrar.Roles" attribute is used to control ...READ MORE

Jul 11, 2018 in Blockchain by slayer
 • 29,350 points • 2,384 views
0 votes
1 answer

What is the difference between ipfs and ethereum?

Blockchain and IPFS are based on similar concepts of decentralized ...READ MORE

Nov 15, 2018 in Blockchain by Perry
 • 17,100 points • 3,561 views
0 votes
1 answer

Hyperledger Fabric: How to get transaction history using key?

history, err := stub.GetHistoryForKey(key_value) for history.HasNext() { ...READ MORE

Nov 20, 2018 in Blockchain by Omkar
 • 69,210 points • 3,305 views
0 votes
1 answer

How to set miner threads outside geth console?

Yes, you can set the miner threads ...READ MORE

Jan 9, 2019 in Blockchain by Omkar
 • 69,210 points • 1,147 views
0 votes
1 answer

Not able to deploy smart contract to private network

This could happen due to 3 possible ...READ MORE

Jan 18, 2019 in Blockchain by Omkar
 • 69,210 points • 743 views
0 votes
1 answer

Problem monitoring geth instance

Try the following command: geth monitor --attach ./chain-data/geth.ipc ...READ MORE

Jan 22, 2019 in Blockchain by Omkar
 • 69,210 points • 521 views
0 votes
0 answers

AtoX leads blockchain 4.0

Since Satoshi Nakamoto created bitcoin in 2008, ...READ MORE

Jan 21, 2019 in Blockchain by TONGZHENG
retagged Jan 24, 2019 by Omkar • 612 views
0 votes
1 answer

geth personal.newAccount() shows password error

You have to pass the password as ...READ MORE

Jan 16, 2019 in Blockchain by Omkar
 • 69,210 points • 764 views
0 votes
1 answer

Hyperledger Fabric: can't load package: package github.com/hyperledger/fabric/core/chaincode/shim:

You can install various golang projects with ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 4,121 views
+1 vote
4 answers

Where does hyperledger fabric store the database for the blockchain?

The data of the Hyperledger Blockchain is ...READ MORE

Apr 29, 2019 in Blockchain by Tina
 • 2,562 views
0 votes
0 answers

How does Atox debut in the center of cross-border payment industry?

Introduction: The “global village” created by the ...READ MORE

Jan 24, 2019 in Blockchain by anonymous
recategorized Jan 24, 2019 by Vardhan • 348 views
–1 vote
1 answer

Truffle migrate network error

When you are running truffle on a ...READ MORE

Jan 18, 2019 in Blockchain by Omkar
 • 69,210 points • 593 views
0 votes
1 answer

Why is geth --fast faster in downloading the Blockchain?

When you use the --fast flag to download the Blockchain, ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
 • 69,210 points • 894 views
0 votes
0 answers

WA: With the wings of the technology, constantly broadening the field of development

According to the history, in the Internet ...READ MORE

Jan 24, 2019 in Blockchain by anonymous
recategorized Jan 24, 2019 by Vardhan • 283 views
0 votes
1 answer

Testrpc can't find log handlers

This doesn't usually happen, maybe the log ...READ MORE

Jan 18, 2019 in Blockchain by Omkar
 • 69,210 points • 477 views
0 votes
1 answer

Not able to send ethers in private ethereum network

Your account is locked by default due ...READ MORE

Jan 9, 2019 in Blockchain by Omkar
 • 69,210 points • 863 views
0 votes
1 answer

Private ethereum network can not find geth.ipc

If you have initialized the genesis block ...READ MORE

Dec 6, 2018 in Blockchain by Omkar
 • 69,210 points • 2,314 views
0 votes
1 answer

Truffle migrate Server Error

Seems like truffle didn't find a server. ...READ MORE

Jan 18, 2019 in Blockchain by Omkar
 • 69,210 points • 352 views
0 votes
2 answers

Hyperledger: Cello Operator Dashboard stuck at loading

This may be due to some inconsistency ...READ MORE

Mar 12, 2019 in Blockchain by Pikvik
 • 864 views
–1 vote
1 answer

User Identity management on Ethereum Blockchain

User Identity management can be done via ERC725 ...READ MORE

Dec 28, 2018 in Blockchain by Omkar
 • 69,210 points • 1,247 views
+2 votes
2 answers

Can two chaincode interact with each other?

Yes, it is possible for two chaincodes ...READ MORE

Jul 12, 2018 in Blockchain by slayer
 • 29,350 points • 2,014 views
+2 votes
5 answers

How do I parse this JSON array in PHP?

/** * Firstly collect the ...READ MORE

Sep 3, 2018 in Blockchain by slayer
 • 29,350 points • 5,949 views
0 votes
1 answer

Truffle compile shows DeclarationError: Undeclared identifier.

Hey. You might have missed declaring the "myaddress"  ...READ MORE

Dec 4, 2018 in Blockchain by Omkar
 • 69,210 points • 2,169 views
0 votes
1 answer

Why to use libraries over Json-RPC to interact with Blockchain?

Though Json-RPC provides methods to interact with ...READ MORE

Jan 11, 2019 in Blockchain by Omkar
 • 69,210 points • 521 views
+1 vote
4 answers

What is the asset, key-value pair in hyperledger fabric?

Let me explain with an example. Suppose ...READ MORE

May 2, 2019 in Blockchain by Kiran
 • 2,903 views
0 votes
1 answer

Bitminter shows no progress but my system heated up and shutdown

After initialization of bitminter you won't be ...READ MORE

Jan 3, 2019 in Blockchain by Omkar
 • 69,210 points • 783 views
+1 vote
2 answers

How to return value from a chaincode in Hyperledger Fabric?

Hyperledger Fabric supports only 2 types of ...READ MORE

Jun 13, 2018 in Blockchain by Perry
 • 17,100 points • 2,600 views
+16 votes
4 answers

Why do only ADMIN users in Hyperledger Fabric have the permission to install query in chaincode?

It was already decided that installing chaincode ...READ MORE

Apr 3, 2018 in Blockchain by Perry
 • 17,100 points • 3,527 views
0 votes
1 answer

admin.peer not working

There is a typo in your command. ...READ MORE

Jan 10, 2019 in Blockchain by Omkar
 • 69,210 points • 418 views
–1 vote
1 answer

Latest block number in Bitcoin

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

Jan 7, 2019 in Blockchain by Omkar
 • 69,210 points • 505 views
0 votes
1 answer

truffle compile shows error: TypeError: Invalid type for argument in function call.

You are getting this error because you ...READ MORE

Dec 5, 2018 in Blockchain by Omkar
 • 69,210 points • 1,908 views
0 votes
1 answer

How to solve “error: no objects passed to create” Error?

It seems like a problem with the ...READ MORE

Aug 1, 2018 in Blockchain by digger
 • 26,740 points • 7,310 views
+1 vote
4 answers

How can we search a block using transaction Id(TxID) or hash?

The most obvious use case would be ...READ MORE

Apr 10, 2018 in Blockchain by Johnathon
 • 9,090 points • 3,769 views
0 votes
1 answer

TypeError: argument must be a string node.js while encoding to hex string.

The error is in protobuf.Transaction.create headerSignature needs to be a string, ...READ MORE

Nov 6, 2018 in Blockchain by Omkar
 • 69,210 points • 3,084 views
0 votes
1 answer

TestRPC/Ganache: the transaction doesn't have the correct nonce

Using MetaMask v3.14.1 you can reset your account as ...READ MORE

Nov 15, 2018 in Blockchain by Perry
 • 17,100 points • 2,646 views
+1 vote
1 answer

Hyperledger fabric java sdk setup

Suppose (assuming) you started the first network ...READ MORE

Nov 17, 2018 in Blockchain by Christine
 • 15,790 points • 2,486 views
0 votes
1 answer

Can we find out the bitcoin sender by their address?

It is not possible to find the ...READ MORE

Dec 4, 2018 in Blockchain by Omkar
 • 69,210 points • 1,767 views
Page:

Most popular tags

"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.