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20
1.3k
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Installation of openzeppelin/contracts Library

Published on
#ethereum #truffle #openzeppelin
1.6k
Views

Which version of safeMath to import from openZeppelin contracts on github.com?

Published on
#ethereum #smartcontracts #openzeppelin
79
Views

All my token storages changed to zero after a implementation

Published on
#blockchain #solidity #smartcontracts #openzeppelin
119
Views

Conflict between @nomicfoundation/hardhat-ethers and @openzeppelin/hardhat-upgrades for ethers version

Published on
#npm #upgrade #hardhat #openzeppelin #version-conflict-engine-exception
71
Views

How to paste ETH price feeds as rate in my crowdsale.sol

Published on
#javascript #solidity #remix #chainlink #openzeppelin
973
Views

ECDSA: invalid signature length error while, when using the signature provided by remix ide

Published on
#hash #ethereum #solidity #remix #openzeppelin
247
Views

Mock smart contract solidity - can't deploy mock smart contract - TypeError: Contract "mockMyToken" should be marked as abstract

Published on
#mocking #solidity #erc20 #openzeppelin
2.1k
Views

Transparent proxy tests - Error: missing revert data in call exception; Transaction reverted without a reason string;

Published on
#proxy #ethereum #solidity #web3js #openzeppelin
981
Views

Solidity constructor syntax

Published on
#ethereum #solidity #openzeppelin
181
Views

Developing NFT contract and receiveing external transactions

Published on
#blockchain #solidity #nft #openzeppelin #erc721
119
Views

How do I enable 2/3 multisigs to approve the transaction before the admin cal call the withdraw method?

Published on
#blockchain #ethereum #solidity #smartcontracts #openzeppelin
1.9k
Views

How to burn erc721 token?

Published on
#ethereum #solidity #nft #openzeppelin #erc721
1k
Views

There is a way to transfer / mint tokens without ERC20 owner approval method?

Published on
#solidity #smartcontracts #erc20 #openzeppelin
11.5k
Views

Source "@openzeppelin/contracts/token/ERC721/ERC721.sol" not found: File import callback not supported

Published on
#visual-studio-code #solidity #openzeppelin
220
Views

Ethernaut challenge -Lv22 Dex - allowance approval problem

Published on
#solidity #openzeppelin
793
Views

Why OpenZeppelin's ERC1155 contract is mintable from only owner?

Published on
#solidity #nft #openzeppelin
1.5k
Views

How to detect emit in a receiving contract using hardhat?

Published on
#ethereum #solidity #hardhat #openzeppelin
239
Views

Trying to run a Brownie Dapp in Docker

Published on
#python #solidity #decentralized-applications #brownie #openzeppelin
711
Views

deploy erc721 contracts from a simple or factory contract

Published on
#blockchain #solidity #remix #openzeppelin #erc721
2.9k
Views

Error: VM Exception while processing transaction: reverted with reason string 'ERC721: transfer caller is not owner nor approved'

Published on
#next.js #solidity #nft #hardhat #openzeppelin

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