Recent questions tagged blockchain

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1 answer

OpenSSL i2o_ECPublicKey not working

Aug 17, 2018 in Blockchain by slayer
 • 29,370 points • 2,733 views
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2 answers

How do I interact with a smart contract on a private network through web3.js

Aug 17, 2018 in Blockchain by sabby
 • 4,370 points • 5,651 views
+3 votes
2 answers

How to validate bitcoin address?

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 9,755 views
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1 answer

Implementing Giveaways in Blockchain

Aug 17, 2018 in Blockchain by sabby
 • 4,370 points • 1,867 views
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1 answer

How to control bitcoind from another machine?

Aug 17, 2018 in Blockchain by slayer
 • 29,370 points • 2,608 views
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1 answer

How to convert byte array to hex string?

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 4,439 views
0 votes
1 answer

How to see bitcoin transaction info?

Aug 17, 2018 in Blockchain by slayer
 • 29,370 points • 3,180 views
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1 answer

How to use Blockchain receive API without exchange rate?

Aug 17, 2018 in Blockchain by sabby
 • 4,370 points • 2,369 views
0 votes
1 answer

How to add Bitcoin as currency for my website?

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 2,398 views
0 votes
1 answer

How to check payment in Blockchain.info wallet?

Aug 17, 2018 in Blockchain by sabby
 • 4,370 points • 2,958 views
0 votes
1 answer

Blockchain peer not able to min block in Azure.

Aug 17, 2018 in Blockchain by sabby
 • 4,370 points • 1,772 views
0 votes
1 answer

How to create Quorum rawTransaction?

Aug 17, 2018 in Blockchain by Christine
 • 15,750 points • 1,955 views
0 votes
1 answer

Where is query displayed in Hyperledger?

Aug 17, 2018 in Blockchain by Christine
 • 15,750 points • 1,884 views
0 votes
1 answer

Solidity invalid opcode error

Aug 16, 2018 in Blockchain by digger
 • 26,740 points • 4,648 views
0 votes
1 answer

Solidity difference array with and without new keyword.

Aug 16, 2018 in Blockchain by slayer
 • 29,370 points • 3,398 views
0 votes
1 answer

How to get return value from solidity contract?

Aug 16, 2018 in Blockchain by digger
 • 26,740 points • 6,557 views
0 votes
1 answer

Function not working from class

Aug 16, 2018 in Blockchain by slayer
 • 29,370 points • 1,944 views
0 votes
1 answer

How do I change default service names in Corda Demobench?

Aug 14, 2018 in Blockchain by aryya
 • 7,460 points • 2,053 views
0 votes
1 answer

Planning to deploy IBM bluemix fabric images on Docker, do I need Amazon ECS or EC2 instances?

Aug 14, 2018 in Blockchain by aryya
 • 7,460 points • 2,100 views
0 votes
2 answers

Python syntax error because of version conflicts.

Aug 13, 2018 in Blockchain by digger
 • 26,740 points • 3,213 views
0 votes
1 answer

How to get return value of external function?

Aug 13, 2018 in Blockchain by slayer
 • 29,370 points • 3,409 views
0 votes
1 answer

How to call smart contract methods from transactions?

Aug 13, 2018 in Blockchain by digger
 • 26,740 points • 2,988 views
0 votes
1 answer

Encoding integers in solidity

Aug 13, 2018 in Blockchain by slayer
 • 29,370 points • 2,430 views
0 votes
1 answer

How to access member functions of smart contract using web3?

Aug 13, 2018 in Blockchain by digger
 • 26,740 points • 3,122 views
0 votes
1 answer

Why does Blockchain comes under Distributed Ledger Technology instead of being merely a replicated database?

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 2,207 views
+1 vote
1 answer

How to create participant and there identities via rest API in Hyperledger Composer?

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 4,817 views
0 votes
1 answer

How do I convert to Crystal ruby's multiple assignments of Array

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 2,041 views
+1 vote
1 answer

Is it possible to exchange the token for other tokens we create in an Ethereum Smart Contract?

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 2,583 views
0 votes
1 answer

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

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 2,394 views
0 votes
1 answer

How do transactions create a new block in Blockchain?

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 3,419 views
0 votes
1 answer

Why do the resultant hash after mining has a leading no. of zeroes in Blockchain verification?

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 5,577 views
0 votes
1 answer

How to explore and analyze the data inside a Hyperledger Blockchain network?

Aug 10, 2018 in Blockchain by sabby
 • 4,370 points • 2,875 views
+3 votes
1 answer

Apache Nifi Execute Process Processor

Aug 10, 2018 in Big Data Hadoop by soujanyabargavi
 • 210 points • 6,143 views
0 votes
1 answer

How to add https security for Node js?

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,331 views
0 votes
1 answer

How to create light wallet in Web3J?

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 4,404 views
0 votes
1 answer

Fatal error while installing web3 node.

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,993 views
0 votes
1 answer

Problem with installing testrpc using python-pip.

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 2,388 views
0 votes
1 answer

What does _ mean in solidity language?

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 4,232 views
0 votes
1 answer

How to use third party contract to send ERC token?

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 2,438 views
0 votes
1 answer

Truffle Error: Migrations contract constructor expected

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,862 views
0 votes
1 answer

Fabric-node-sdk 1.2 with Fabric 1.1

Aug 10, 2018 in Blockchain by digger
 • 26,740 points • 1,994 views
0 votes
1 answer

Hyperledger Sawtooth installation JAVA_HOME: path not found

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,038 views
0 votes
1 answer

How can Blockchain be implemented for android development?

Aug 10, 2018 in Blockchain by Christine
 • 15,750 points • 2,653 views
0 votes
1 answer

My first Hyperledger fabric network is not working

Aug 10, 2018 in Blockchain by Christine
 • 15,750 points • 3,458 views
0 votes
1 answer

Support for ES6 modules syntax on IBM bluemix

Aug 10, 2018 in DevOps on Cloud by Atul
 • 10,240 points • 2,492 views
+1 vote
1 answer

How do i add images in Hyperledger?

Aug 10, 2018 in Blockchain by Shashank
 • 10,400 points • 2,102 views
0 votes
1 answer

To capture events do we need to create assets using transaction processing functions?

Aug 10, 2018 in Blockchain by Shashank
 • 10,400 points • 1,537 views
0 votes
1 answer

Solidity Error: Member "equal" is not available in type(library Assert) outside of storage

Aug 9, 2018 in Blockchain by digger
 • 26,740 points • 2,330 views
0 votes
2 answers

Truffle migrate gives “ Error: No network specified. ”

Aug 9, 2018 in Blockchain by slayer
 • 29,370 points • 3,552 views
0 votes
1 answer

Ethereum wallet not able to make transaction

Aug 9, 2018 in Blockchain by digger
 • 26,740 points • 1,971 views
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