Recent questions tagged smart-contract

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Accessing External Api in HyperLedger Fabric

Nov 17, 2018 in Blockchain by Perry
 • 17,100 points • 1,895 views
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Ethereum Advance token sample

Nov 2, 2018 in Blockchain by Perry
 • 17,100 points • 746 views
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1 answer

How to issue regular payouts to multiple wallets?

Oct 30, 2018 in Blockchain by Perry
 • 17,100 points • 1,067 views
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1 answer

Unable to change a state variable in a contract

Oct 30, 2018 in Blockchain by Perry
 • 17,100 points • 725 views
+1 vote
2 answers

Hyperledger Java SDK Client Event Listener to register and listen Blocks

Oct 29, 2018 in Blockchain by digger
 • 26,740 points • 3,660 views
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Hyperledger Fabric: cp: cannot stat ‘build/docker/gotools/bin/protoc-gen-go’: No such file or directory

Oct 29, 2018 in Blockchain by slayer
 • 29,370 points • 2,149 views
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How to run smart contract function using nethereum to return a result?

Oct 24, 2018 in Blockchain by digger
 • 26,740 points • 2,240 views
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2 answers

Ethereum function completed not event not showing up

Oct 24, 2018 in Blockchain by slayer
 • 29,370 points • 1,120 views
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PHP IPC with geth Ethereum: How to communicate with client?

Oct 22, 2018 in Blockchain by slayer
 • 29,370 points • 2,091 views
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Not able to invoke a contract in Ethereum Private chain using geth

Oct 22, 2018 in Blockchain by slayer
 • 29,370 points • 1,210 views
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Web3js: how to catch ethereum contract exception?

Oct 22, 2018 in Blockchain by slayer
 • 29,370 points • 2,419 views
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1 answer

Solidity Web3js: Invalid number of arguments to Solidity function error

Oct 22, 2018 in Blockchain by slayer
 • 29,370 points • 3,064 views
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1 answer

How to read the ETH value and other token values from an account?

Oct 22, 2018 in Blockchain by digger
 • 26,740 points • 1,049 views
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Web3: No provider set error

Oct 22, 2018 in Blockchain by digger
 • 26,740 points • 2,347 views
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1 answer

Solidity: How to return id from hash value?

Oct 22, 2018 in Blockchain by digger
 • 26,740 points • 2,665 views
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1 answer

Can one contract own tokens of another contract?

Oct 17, 2018 in Blockchain by sabby
 • 4,370 points • 1,638 views
+1 vote
1 answer

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

Oct 17, 2018 in Blockchain by sabby
 • 4,370 points • 5,407 views
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1 answer

sellprice and buyprice fixing in smart contract.

Oct 17, 2018 in Blockchain by sabby
 • 4,370 points • 772 views
+4 votes
2 answers

Warning: Invoking events without “emit” prefix is deprecated while truffle compile

Oct 15, 2018 in Blockchain by digger
 • 26,740 points • 2,057 views
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What is the default network that truffle migrates to when the config has 2 networks?

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 1,813 views
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1 answer

How to save complex object in the contract in solidity

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 3,789 views
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1 answer

Solidity geth: Error encountered during contract execution [Bad instruction]

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 1,691 views
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1 answer

UnhandledPromiseRejectionWarning: Insufficient funds error in Ethereum: NodeJS web3

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 1,573 views
0 votes
1 answer

Solidity: logical AND outputs parser error

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 1,888 views
0 votes
1 answer

How do Ethereum node compete for blocks?

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 1,159 views
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1 answer

Is the msg.sender address changed while passing to another contract as a parameter?

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,527 views
+1 vote
2 answers

Integrating web3 from Metamask: "ReferenceError: window is not defined" error

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 7,465 views
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1 answer

Using json rpc with curl on java?

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 2,956 views
0 votes
1 answer

Ethereum generating genesis Python Syntax

Oct 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,115 views
0 votes
1 answer

Where is the geth.exe in the Ethereum mist?

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 1,016 views
0 votes
1 answer

TypeError: XMLHttpRequest is not a function when using web3 on meteor server side

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 1,288 views
0 votes
1 answer

Getting Invalid number of parameters for “undefined” when deploying smart contract

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 3,371 views
0 votes
1 answer

Calling function in truffle console error

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 3,168 views
0 votes
1 answer

Transfer the gas value of contract to my own address

Oct 10, 2018 in Blockchain by digger
 • 26,740 points • 729 views
0 votes
1 answer

Store contract results tag in a variable

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 619 views
0 votes
1 answer

Creating an account with web3.js v0.2.6

Oct 9, 2018 in Blockchain by digger
 • 26,740 points • 903 views
0 votes
1 answer

Nodejs Express: Getting different output in console.log and callback

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 676 views
0 votes
1 answer

I am not able to change array elements globally

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 884 views
0 votes
1 answer

Truffle Compile failing, ParserError: Expected token LParen got Identifier function

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 2,755 views
0 votes
1 answer

Getting “web3.eth.filter is not a function” while trying to monitor Ethereum blocks

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 2,902 views
0 votes
1 answer

Solidity ParserError: Expected identifier but got '='

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 10,039 views
0 votes
1 answer

What is the difference between creating a new solidity contract with and without the `new` keyword?

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,387 views
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1 answer

Ethereum, web3, Error: invalid argument 0: cannot unmarshal non-string as hex data, when I call a contract

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 2,252 views
0 votes
1 answer

Solidity different token price

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,040 views
0 votes
1 answer

Sending hash in function parameter

Oct 8, 2018 in Blockchain by digger
 • 26,740 points • 1,062 views
0 votes
1 answer

Contract deployment is raising gas issue while transaction and issue vary on various networksbl

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 937 views
0 votes
1 answer

Web is not injected by metamask

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,160 views
0 votes
1 answer

Truffle migrate fails due to missing function, but it exists in node_modules

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 2,282 views
0 votes
1 answer

Access variables through auto-generated getters from a different contract

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 713 views
0 votes
1 answer

Handling UI when a trasaction is in pending (MetaMask)

Oct 3, 2018 in Blockchain by slayer
 • 29,370 points • 1,278 views
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