Hey I'm working on a NFT market place on the binance smart chain, I keep running into net::ERR_CERT_COMMON_NAME_INVALID, does infura work with the BSC network
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On spinning up a hardhat node locally, I get 10 addresses pre funded with 10k ETH. But none of these show up on metamask when I connect it to localhost:8545. As a result I'm not able to interact with a dapp deployed locally
Am I doing something wrong?
Usually, the back-end development project provides funded accounts which you can enter into Metamask, It's not like the Goerli or (now defunct) Rinkeby test networks where you can visit a site and have some ETH added to your test account because those test networks are hosted. You need to spin up a local project and have it provide funded accounts.
Such an example is Lesson 9: Hardhat Smart Contract Lottery in (Learn Blockchain, Solidity, and Full Stack Web3 Development with JavaScript by Free Code Camp)
here is the code ...
https://github.com/PatrickAlphaC/hardhat-smartcontract-lottery-fcc
If you run that project it generates a number of addresses which you can connect to in Metamask.
MetaMask has no way of knowing which of your local accounts you want to import, or which are funded (prior to the import).
So you need to import the accounts to MetaMask manually using the private keys provided by Hardhat.
I have created a Ethereum Blockchain on Azure BaaS service- Proof Of Authority consensus algorithm.
I hit an issue here, when I try to deploy a Smart Contract to the blockchain network via the provided RPC endpoint. It complains that I don't have enough Ether to do so. Can someone advise that, how could I get ether for the Admin account? Obviously, the account cannot mint ethers and this is not the POW algorithm.
Please advise.
Thank you.
Are you working with truffle? If so, take the following advice to see if can help you.
You can only deploy the smart contracts to ethereum PoA on Azure with truffle version 5.0.5. Latest version of truffle gives gas cost related issues.
For me downgrading the truffle version solved the problem:
npm i -g truffle#v5.0.5
I'm writing smart contracts in Ethereum, using ganache and truffle. Contracts was deployed to the chains and I use Ethereum Wallet to get all the accounts created by ganache, but when I want to test the contracts or send eth I get this information:
And I got the private key but Ethereum Wallet import account is disabled:
How do I use these accounts to test my contracts by Ethereum Wallet?
I am new to smart contract development. I have a smart contract deployed on Ethereum blockchain Ropsten Test Net. I have smart contract address and ABI. I am not sure how to call functions of that smart contract from geth terminal.
Do i have to sync entire blockchain to call any smart contract functions deployed? I tried syncing but it never completes. It's stuck at last 100 blocks since a week. My ether balance is showing 0 when i connect to TestNet locally.
Is there anyway i can do this online? calling a deployed smart contract through Remix IDE or any other ?
Any help is highly appreciated.
My preferred way to do this is to install MetaMask and using that with Remix.
If we don't want to sync the full Ropsten testnet to get the current blockchain info and using the web3 api.
Is there an online full node that provide the testnet API ?
As far as i know only the Ethereum Developer APIs supports the ropsten network