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I am attempting to launch a private geth chain with the following command:geth --datadir=./test-private-blockchain/ init genesis.jsonI am receiving the following error:Fatal: Failed to write genesis block: unsupported fork...
Asked on 11/15/2021 by Leon Africa
2 answerWhat is a blockchain oracle for smart contracts? And why is it needed? I've seen a lot of posts about "how do oracles work", and "what is the oracle...
Asked on 11/15/2021 by Keenan Olsen
1 answerIf I am writing a smart contract for some kind of (gambling) game, how can I generate a random number securely? What are the best practises and security trade-offs to...
Asked on 11/12/2021
20 answerI deployed Token and Crowdsale contract in separate migration files. During Migration, there was no error. Migration logs are share: Running migration: 2_deploy_token.js Deploying DappToken... ... 0xc1ed596e0249507186d75f2d42ba1c34e5b72697774baf9a283e0fb422214b70...
Asked on 11/12/2021 by Unha Back
1 answermy librarypragma solidity ^0.5.8;library SafeMath { function add(uint256 a,uint256 b) public pure returns (uint256) { return a+b; ...
Asked on 11/12/2021 by kantus jee
1 answerI need to send ethereum between wallets or interact with a token on the ethereum network can a light node has a constraint to do that,it can not perform any...
Asked on 11/12/2021 by andrew007
1 answerAlthough it compiles successfully truffle migrate --network ganache gives the following error: Unknown network "ganache". See your Truffle configuration file for available networks. I believe I have it wired correctly...
Asked on 11/12/2021 by CloudTech Support
1 answerI am trying to deploy a private ethereum network in my machine using Proof-Of-Authority and geth client.I followed this tutorial but I can't realize where the...
Asked on 11/10/2021 by maroodb
2 answerI wanted to know is there a possibility to create a smart contract for a token wherein the transaction fee could be overridden with the network fee and the fee...
Asked on 11/10/2021 by Nitin Jagtiani
1 answerSolidity 0.6.2 allows the creation of contracts with the create2 opcode via the new keyword and passing a salt in addition to any args. This is adequate for creating standard...
Asked on 11/10/2021 by Nick Furfaro
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