Aida ICO Contract

Please see below description of Aida ICO smart contract developed by Phenom.Team. This is a first ever contract based upon the new concept outlined by Vitalik Buterin when investors can revoke their deposits before the end of the ICO

Overview

AID Token smart-contract is structured upon ERC20 standard. One of distinctive features of the smart-contract is the fact that token price is fixed and pegged to USD instead of ETH which protects investors from volatility risks of ETH currency. This technical feature is made possible by usage of Oracle that updates ETH/USD actual exchange rate in the smart contract every 30 minutes. The token price is set to $0.25 apiece.

Ethereum is not the only currency investors can use when investing, they can also opt to purchase AID tokens with BTC, LTC, BCC and even USD (in debit cards). Processing of transactions in these currencies is enabled by automated platform, which processes every single incoming transaction and calculates it's USD equivalent. It also tracks number of confirmations of every single transaction and emits tokens to Ethereum address of an investor, he specified in his personal profile web page. Emission itself is processed by bringing up of buyForInvestor method directly from cotroller-addresses (controllersOnly). In order to ensure smooth real-time emission of AID tokens, a unique sharding technology developed by Phenom.Team is used. The basics of the technology boils down to the procedure wherein the whole emission process is distributed among three controller-addresses, which allows to perform fast real-time token emission even when the whole Ethereum network is overloaded.

AidaIco is the first smart-contract which is structured and based upon the concept outlined by Vitalik Buterin when investors can revoke their deposits:

• For ETH investments: all tokens stashed on investor’s address get burned and invested ETH forwared back to investor’s wallet from AidaIco smart-contract.
• BTC, LTC, BCC investments: refund process sf powered by Oracle. The investment amount get refunded back to investor’s wallet, minus transaction fee.
• Withdrawal lock – during the main stage of the ICO refund is possible only till 30th January 2018, inclusive.

The Crowdsale Specification

• AID token is ERC-20 compliant.
• Allocation of AID tokens goes in the following way:
  • Bounty 1%
  • Partners 3%
  • Team 20%
  • Public ICO 76%

Code

AidaICO Functions

Fallback function

function() external payable

Fallback function calls createTokensForEth(address _investor, uint256 _aidValue) function to create tokens when investor sends ETH directly to ICO smart contract address.

setRate

function setRate(uint256 _RateEth) external oracleOnly

Set ETH/USD exchange rate and update token price.

startPreIco

function startPreIco() external managerOnly

Set ICO status to PreIcoStarted.

pausePreIco

function pausePreIco() external managerOnly

Set Ico status to PreIcoPaused.

finishPreIco

function finishPreIco() external managerOnly

Set ICO status to PreIcoFinished.

startIco

function startIco() external managerOnly

Set ICO status to IcoStarted.

pauseIco

function startIco() external managerOnly

Set ICO status to IcoPaused.

finishIco

function finishIco() external managerOnly

Finish ICO and allocate tokens for bounty company, partners and team pools.

enableTokensTransfer

function enableTokensTransfer() external managerOnly

Unfreezes tokens (enable token transfers).

rememberEther

function rememberEther(uint256 _value, address _investor) internal

Stores amount invested from specific address.

rememberTokensEth

function rememberTokensEth(uint256 _value, address _investor) internal

Stores amount of AID tokens investor received (for ETH purchases).

rememberTokensOtherCrypto

function rememberTokensOtherCrypto(uint256 _value, address _investor) internal

Stores amount of AID tokens investor received (for purchases in BTC, LTC, BCC).

buyForInvestor

function buyForInvestor(address _investor,uint256 _aidValue,string _txHash) external controllersOnly

buyForInvestor function is called by one of controllers createTokensForOtherCrypto(address _investor, uint256 _aidValue) function to allocate tokens to investors who make a deposit in non-ETH currencies.

createTokensForOtherCrypto

function createTokensForOtherCrypto(address _investor, uint256 _aidValue) internal

Issue tokens for investors who paid in other cryptocurrencies.

createTokensForEth

function createTokensForEth(address _investor, uint256 _aidValue) internal

Issue tokens for investors who paid in ETH.

getBonus

function getBonus(uint256 _value) public constant returns(uint256)

get current bonus

daysFromIcoStart

function daysFromIcoStart() public constant returns(uint256)

Count days from Ico start day.

returnEther

function returnEther() public

Allows investors to return their investments(in ETH) if preICO or ICO_RETURN_DURATION is not over yet and burns tokens.

returnOtherCrypto

function returnOtherCrypto(address _investor, string _logString) external refundManagerOnly

This method is called by refund manager to burn tokens of investors who want to revoke their investments in other cryptocurrencies.

withdrawEther

function withdrawEther(uint256 _value) external managerOnly

Allows Company withdrawing investments when ICO_RETURN_DURATION is over

AidaIco Events

LogStartICO

event LogStartICO();

LogPauseICO

event LogPauseICO();

LogFinishICO

event LogFinishICO(address bountyFund, address partnersFund, address teamFund);

LogBuyForInvestor

event LogBuyForInvestor(address investor, uint256 aidValue, string txHash);

LogReturnEth

event LogReturnEth(address investor, uint256 eth);

LogReturnOtherCrypto

event LogReturnOtherCrypto(address investor, string logString);

Prerequisites

1. nodejs, and make sure it's version above 8.0.0
2. npm
3. truffle
4. testrpc

Run tests

1. run testrpc in terminal
2. run truffle test in another terminal to execute tests.

Collaborators

• Alex Smirnov
• Max Petriev
• Dmitriy Pukhov
• Kate Krishtopa