Solidity Treasures
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Useful materials and tools for development on Ethereum.
News proposals @hirama
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ethereum-blockchain-developer-guide-updated.pdf
61.9 MB
https://ethereum-blockchain-developer.com/

https://docs.binance.org/smart-chain/guides/bsc-intro.html


UPD: truffle template for react might trigger a myriad of mistakes, you can try this out

https://betterprogramming.pub/blockchain-introduction-using-real-world-dapp-react-solidity-web3-js-546471419955


UPD2: If you've troubles with web3 in a React project, try to downgrade your react-scripts to 4.0.3


UPD: Lab ERC20 Token Sale

Change new web3.eth.Contract(KYC.abi, KYC.networks[networkId].address);

to

new web3.eth.Contract(KYC.abi, KYC.networks[networkId].address);
Contract-Library continuously decompiles and analyzes all installed contracts on the Ethereum mainnet and testnets.

contract-library.com

By default, the contracts are ordered by creation block number, so the first page typically shows very fresh contracts, with zero ether balance and no source code available. Contracts with a lot more attributes can be found in later pages or by searching.