4 votes

Ethercamp. Could not start sandbox: Sandbox is not available

I faced the same sandbox issue where it was not getting started. In my case it turned out that since I was working from behind a proxy, it was getting blocked. Trying to run the contract from an open ...
Ketan Bhokray's user avatar
4 votes
Accepted

Forgot my Ethereum Address. Still have seed phrase and private key

Don't worry about your address, it is not importent to remember it while you have the private key and the seed. I recommand you to use https://www.myetherwallet.com/ (because it is easy, however you ...
Badr Bellaj's user avatar
  • 18.7k
3 votes
Accepted

What command to run for Live.ether.camp project?

The example project consists of 3 parts: Solidity contracts in directory contracts/ Web-app in directory web/ Tests for the contracts in directory test/ To run the contracts you need to start a new ...
Alex Sinyagin's user avatar
3 votes

Can one get the current gas used as a function inside of a smart contract?

In Solidity, this is available as msg.gas, documented here. There's no direct way to obtain the initial gas; the best option is to store msg.gas to a variable as soon in the contract execution as is ...
Nick Johnson's user avatar
  • 8,104
3 votes
Accepted

Workflow for Dapp Development

Mix IDE is officially supported by Ethereum, and can be used with geth. But you could use either of them based on your preference. You could also take a look at some other Javascript IDEs, specially ...
rupshabagchi's user avatar
2 votes

How to withdraw from live.ether.camp?

Use Keccak-256 hashing algorithm with your seed. You can install it from npm or use online tools (but don't trust your account after exposing you seed elsewhere online). To avoid problems use shorter ...
neuron2000's user avatar
2 votes
Accepted

How to withdraw from live.ether.camp?

Follow that one: https://www.youtube.com/watch?v=DLSyP_pE4gY be sure you are entering the receiver address with no 0x prefix
Roman Mandeleil's user avatar
2 votes

How to withdraw from live.ether.camp?

Brain wallets are dangerous. As a blockexplorer, ether.camp is very useful with features such as showing the VM trace: this author adores those features and have posted screenshots of ether.camp on ...
eth's user avatar
  • 85k
2 votes

How to produce a hash from a very long seed on ether.camp?

Since the site dies not appear to accept strings longer than 64 characters, as you said, I would recommend hashing the seed manually using a cryptographic hash, like SHA256. This should return a 64 ...
Tjaden Hess's user avatar
  • 36.7k
2 votes
Accepted

Transaction not performed, morden.ether.camp has different transactions than me (Morden)

Make sure that you are running geth version 1.4.18 or later (I don't know about the 1.5x dev version). For Parity, Ethereum Wallet and EthereumJ, see FAQ: Upcoming Ethereum Hard Fork. This hard fork ...
BokkyPooBah's user avatar
  • 40.1k
1 vote
Accepted

Exploring blockchain data from testrpc network

With Web3.js, you can get chainblock content by command of eth.getBlock(eth.blockNumber), and access every attribute, currentBlock = eth.getBlock(eth.blockNumber); currentBlock.extraData; ...
BinGoBinBin's user avatar
  • 2,161
1 vote
Accepted

How to see the frontend in ethercamp's cloud9?

Replace the IP with the URL of your cloud9 or Ethereum Studio instance. http://xxx.by.ether.camp:8080/?_c9_id=livepreview0&_c9_host=https://xxx.by.ether.camp Where xxx is your username on ether....
q9f's user avatar
  • 32.8k
1 vote

Ether.Camp web3 js interact with contract - what am I doing wrong?

I wanted to ask for details, but I can't post comments. It should be contract.removeElement("0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba") Do you see any error messages in the browser console? When ...
Alex Sinyagin's user avatar
1 vote

What command to run for Live.ether.camp project?

Open the bash terminal, on your screenshot the most leftish tab below. And build the example project with the following commands: cd ~/workspace/example-project npm install gulp-cli -g npm install ...
q9f's user avatar
  • 32.8k
1 vote

Can one get the current gas used as a function inside of a smart contract?

on: live.ether.camp Ethereum Studio you have a complete Ethereum sandbox where you can imitate transaction execution and have very good estimation of the used gas. More info to start is here: ...
Roman Mandeleil's user avatar
1 vote

How to produce a hash from a very long seed on ether.camp?

Here is how to get a useful hash from your seed even if it's too long. You use Keccak-256 hashing algorithm with your seed. The resulting 32byte hash (64 chars [0-9a-f]) is the hash you can use in ...
neuron2000's user avatar
1 vote

How to withdraw from live.ether.camp?

You can get the private key to output on live.ether.camp by... Generate a new wallet (any wallet) View the wallet Right click and say inspect element Go to console. type ethUtil.sha3(" your_seed_here ...
tayvano's user avatar
  • 15.9k

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