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
Related
How to deploy hardhat contract to mainnet without ALCHEMY or INFURA ?
Alchemy, Infura, and others, are services offering connection to nodes of the Ethereum network.
Contract deployment means that you broadcast a transaction with specific parameters (data field containing the compiled bytecode, to field empty). But you can only broadcast a transaction to the rest of the network from a node connected to the network.
So apart from using a third-party service, you can also run your own node. For example using the go-ethereum client software.
Then you'll be able to broadcast the transaction through this your own node, instead of a third-party one.
Can I deploy ERC-20 token on Aurora and bridge it to ETH Mainnet ERC-20 contract?
We plan to launch our token as Aurora native ERC-20, but we’ll need to bridge it to Ethereum and NEAR Protocol. Would it be possible to include the token in the list of supported Rainbow Bridge tokens? What are the steps on how to do this properly via the Rainbow Bridge?
At the moment bridging of Aurora native tokens to Ethereum is not possible, but eventually this functionality is to be added.
However, being ERC-20, the token should originate from Ethereum and then be represented on Aurora.
To add it to Aurora, you’ll need to deploy it and create a PR in https://github.com/aurora-is-near/bridge-assets.
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.