Ethereum 3

Building ERC20 Tokens Wallet APIs using BitGo

BitGo provides APIs for creating and integrating wallets in your app for several coins and ERC20 tokens. For creating ERC20 token wallets you will have to buy a BitGo enterprise contract. But in this tutorial I will show an hack around how you can create ERC20 token wallets in BitGo without buying a BitGo contract. […]

Image5 days ago http://qnimate.com/building-erc20-tokens-wallet-apis-using-bitgo/
Writing Upgradable Smart Contracts in Solidity

As you must be aware that smart contracts are immutable programs that run exactly as programmed without any third party interface. Smart contracts cannot be modified once they are deployed which is actually a feature of smart contracts but in some blockchain use-cases it may be needed to change the smart contracts interfaces and/or their […]

Image1 year ago http://qnimate.com/writing-upgradable-smart-contracts-in-ethereum/
Calculating Nonce for Raw Transactions in Geth

You can simply use web3.eth.getTransactionCount to get the transaction nonce but it doesn’t include the transactions pending in the transaction pool. The purpose of this API is to simply retrieve total transactions count from the blockchain only till a particular block (by default latest block). So when you are pushing a lot of transactions from […]

1 year ago http://qnimate.com/calculating-nonce-for-raw-transactions-in-geth/