B9lab ETH-SUB: Nostradamus Challenge

Challenge set up and assisted by B9lab (https://academy.b9lab.com)

Challenge time! Can you guess the next block's values? If you think you can, prove it by having your address return true here https://ropsten.etherscan.io/address/0x8A879BCCd75B9cb17cc9DC9a69820A794cae0b1E#readContract.

Steps towards success

Wrote contract TheProphecy.sol and compiled with Remix
Copied ABI and Bytecode (see folder text files)
Due to nicely formatted output converted ABI in a one-liner: tr -d "\n\r\t" < ABI\ \(copied\ from\ Remix\).txt > ABIforGeth.txt

Within geth console:

  var TheProphecyContractABI = _ConvertedABI_

  var TheProphecyContract = web3.eth.contract(TheProphecyContractABI)

  var TheProphecyInstance = TheProphecyContract.new(
  	{
  		from: eth.accounts[0],
  		data: _RemixBytecode_,
  		gas: 100000
  	}, function(e, contract){
  		console.log(e, contract);
  		if (typeof contract.address !== 'undefined') {
  			console.log('Contract mined! address: ' + contract.address + ' transactionHash: ' + contract.transactionHash);
  			}
  		}
  	)

  TheProphecyInstance.prophesy("Heyho! Its Niels!\n \xF0\x9F\x98\x8E", {from: eth.accounts[0]})

Dakavon/B9labETHsub-Nostradamus

B9lab ETH-SUB: Nostradamus Challenge

Steps towards success