Recent questions tagged smart-contract

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How can i extract information from Ethereum blockchain using python?

Jul 31, 2018 in Blockchain by Perry
 • 17,100 points • 3,651 views
+2 votes
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How to solve “SyntaxError: unexpected EOF” error in python?

Jul 30, 2018 in Blockchain by digger
 • 26,740 points • 7,684 views
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Solidity how to solve “Error Encoding arguments ” error while using create button?

Jul 30, 2018 in Blockchain by digger
 • 26,740 points • 5,146 views
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Solidity and Web.js for Ethereum blockchain data

Jul 30, 2018 in Blockchain by slayer
 • 29,370 points • 2,471 views
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Solidity code to change value of name

Jul 30, 2018 in Blockchain by digger
 • 26,740 points • 2,303 views
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1 answer

Not able to execute a deployed contract?

Jul 30, 2018 in Blockchain by slayer
 • 29,370 points • 1,849 views
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Can I use inherited contract in artifacts.require() statement?

Jul 27, 2018 in Blockchain by slayer
 • 29,370 points • 1,668 views
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How to solve “sender doesn't have enough funds to send tx” error in Ethereum?

Jul 27, 2018 in Blockchain by digger
 • 26,740 points • 8,695 views
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1 answer

sendProposal - timed out after:45000, sendPeersProposal - Promise is rejected: Error: REQUEST_TIMEOUT

Jul 26, 2018 in Blockchain by sabby
 • 4,370 points • 3,229 views
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1 answer

How to interact with smart contract in GO?

Jul 26, 2018 in Blockchain by slayer
 • 29,370 points • 3,983 views
+1 vote
3 answers

How to solve “Module not found: Error: Can't resolve 'truffle-contract'” error in web3?

Jul 26, 2018 in Blockchain by slayer
 • 29,370 points • 9,524 views
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1 answer

Error while generating smart contracts which returns array of struct in Web3j v3.3.1

Jul 26, 2018 in Blockchain by sabby
 • 4,370 points • 3,731 views
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Is {from: thesponsor, value: 10000000, gas: 3000000} considered as a transaction object?

Jul 25, 2018 in Blockchain by slayer
 • 29,370 points • 1,854 views
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1 answer

How to send ethers to a contract?

Jul 25, 2018 in Blockchain by aryya
 • 7,460 points • 1,606 views
0 votes
1 answer

Trying to setup a hyperledger but REST API is throwing error

Jul 25, 2018 in Blockchain by Shashank
 • 10,400 points • 2,196 views
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2 answers

How is a transaction public key related to original public?

Jul 24, 2018 in Blockchain by slayer
 • 29,370 points • 2,116 views
0 votes
1 answer

how can I save my nodejs blockchain??

Jul 24, 2018 in Blockchain by Perry
 • 17,100 points • 1,804 views
0 votes
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Not able to execute fabcar demo in Hyperledger

Jul 24, 2018 in Blockchain by aryya
 • 7,460 points • 2,224 views
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npm hfc@0.6.2 not properly installing

Jul 24, 2018 in Blockchain by aryya
 • 7,460 points • 2,373 views
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Can I make my smart contract private in Quorum?

Jul 23, 2018 in Blockchain by digger
 • 26,740 points • 3,247 views
0 votes
1 answer

Not able to deploy smart contract on testrpc.

Jul 23, 2018 in Blockchain by slayer
 • 29,370 points • 2,047 views
0 votes
1 answer

Do we require a specific condition when working with indices on solidity?

Jul 23, 2018 in Blockchain by sabby
 • 4,370 points • 1,846 views
0 votes
1 answer

Error in sending value to an Ethereum Smart Contract.

Jul 23, 2018 in Blockchain by sabby
 • 4,370 points • 2,709 views
0 votes
1 answer

How can I build a hexadecimal block if I have all the needed information?

Jul 21, 2018 in Blockchain by Johnathon
 • 9,090 points • 2,155 views
+1 vote
1 answer

Ethereum Error: authentication needed: password or unlock

Jul 20, 2018 in Blockchain by sabby
 • 4,370 points • 6,953 views
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How to send Bitcoins with node.js?

Jul 20, 2018 in Blockchain by sabby
 • 4,370 points • 4,531 views
+1 vote
1 answer

How to perform a simple 1-to-1 Bitcoin Transaction with Bitcore?

Jul 20, 2018 in Blockchain by aryya
 • 7,460 points • 3,637 views
0 votes
1 answer

How do I get the total amount sent to an address?

Jul 19, 2018 in Blockchain by Shashank
 • 10,400 points • 2,045 views
0 votes
1 answer

How to change Endorsement policies

Jul 18, 2018 in Blockchain by aryya
 • 7,460 points • 1,834 views
0 votes
1 answer

Can we store encrypted data into transaction?

Jul 17, 2018 in Blockchain by sabby
 • 4,370 points • 1,786 views
0 votes
1 answer

GetState query via chaincode always returns empty value

Jul 17, 2018 in Blockchain by sabby
 • 4,370 points • 2,952 views
0 votes
1 answer

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

Jul 17, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,797 views
0 votes
1 answer

Can smart contract be altered after deployment?

Jul 17, 2018 in Blockchain by slayer
 • 29,370 points • 1,687 views
0 votes
1 answer

How to call external data using smart contracts?

Jul 16, 2018 in Blockchain by digger
 • 26,740 points • 3,081 views
0 votes
1 answer

Blockchain Python Syntax Error

Jul 13, 2018 in Blockchain by sabby
 • 4,370 points • 2,016 views
+1 vote
2 answers

How to solve Hyperledger Fabric "error endorsing chaincode" error?

Jul 13, 2018 in Blockchain by slayer
 • 29,370 points • 6,454 views
0 votes
1 answer

What if I change Chaincode state in invokeChaincode?

Jul 13, 2018 in Blockchain by digger
 • 26,740 points • 2,013 views
0 votes
1 answer

What is transientMap in node.js and getTransient in chaincode?

Jul 13, 2018 in Blockchain by slayer
 • 29,370 points • 2,550 views
0 votes
1 answer

Error while Querying System Chaincode.

Jul 12, 2018 in Blockchain by slayer
 • 29,370 points • 1,872 views
+2 votes
2 answers

Can two chaincode interact with each other?

Jul 12, 2018 in Blockchain by digger
 • 26,740 points • 3,696 views
0 votes
1 answer

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

Jul 12, 2018 in Blockchain by slayer
 • 29,370 points • 2,525 views
0 votes
1 answer

Include real world data in smart contract

Jul 11, 2018 in Blockchain by aryya
 • 7,460 points • 2,217 views
0 votes
1 answer

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

Jul 11, 2018 in Blockchain by aryya
 • 7,460 points • 2,135 views
0 votes
1 answer

How to connect javascript to solidity/ethereum?

Jul 11, 2018 in Blockchain by slayer
 • 29,370 points • 2,545 views
0 votes
1 answer

How to use Rest API support in local development environment?

Jul 11, 2018 in Blockchain by digger
 • 26,740 points • 2,342 views
+1 vote
2 answers

Where is custom chaincode path Hyperledger Fabric 1.0?

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 4,675 views
0 votes
1 answer

how to learn writing java code for Hyperledger Fabric?

Jul 10, 2018 in Blockchain by digger
 • 26,740 points • 2,243 views
0 votes
1 answer

How to store photos in Hyperledger smart contract?

Jul 9, 2018 in Blockchain by digger
 • 26,740 points • 1,980 views
0 votes
1 answer

How to set web3 solidity variable value?

Jul 6, 2018 in Blockchain by sabby
 • 4,370 points • 3,336 views
0 votes
1 answer

How to send chaincode error to the calling application?

Jul 6, 2018 in Blockchain by slayer
 • 29,370 points • 2,364 views
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