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BokkyPooBah edited this page Mar 14, 2017 · 28 revisions

Table of contents


Token Contract Information


Market Making Information

Creating Your Trade Contract

If you want to list an RBX TokenTrader contract on https://cryptoderivatives.market, use the TokenTraderFactory contract.

Execute createTradeContract(address asset, uint256 buyPrice, uint256 sellPrice, uint256 units, bool buysTokens, bool sellsTokens) to create your RBX TokenTrader contract.

The formula for working out the buyPrice or sellPrice follows:

rate = price / units * 10^(tokenDecimals - etherDecimals)

which is:

rate = price / units * 10^(tokenDecimals - 18)

and tokenDecimals = 8, so:

rate = price / units * 10^-10

The currently active RBX contract at 0xa82a8dc964efd4a6a9f1e8abc45e76573cbdb2f4 has:

  • _asset = 0x74aca0f1a40f7e0f3845dadf52c65060de7749af
  • sellPrice = 1000000
  • buyPrice = 950000
  • units = 1

and so:

  • sellRate = 1000000 / 1 * 10^-10 = 0.0001
  • buyRate = 950000 / 1 * 10^-10 = 0.000095

Check:

  • See Tx 0xd2b6b4a2... where 0.002511 ETH was sent to the contract above to purchase 25.11 RBX tokens.

Watching Your Trade Contract

Find your newly created Trade contract on https://cryptoderivatives.market/tokenTraderContracts. Watch this contract address using the ABI at How To Watch A TokenTrader Contract In Ethereum Wallet / Mist.

Depositing Tokens

Use the RBX token contract to transfer your tokens to your newly created TokenTrader address.

Depositing Ethers

Execute your TokenTrader.makerDepositEther() function, sending the amount of ethers.


How To Watch The Token Contract In Ethereum Wallet / Mist

In Ethereum Wallet / Mist, select the CONTRACTS tab and click WATCH CONTRACT to open the Watch contract window. Then:

  • Under CONTRACT NAME, enter RBX

  • Under CONTRACT ADDRESS, enter 0x74aca0f1a40f7e0f3845dadf52c65060de7749af

  • Copy the Application Binary Interface below and paste it into the JSON INTERFACE text box

    [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_amount","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"totalSupply","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wavesAddress","type":"string"},{"name":"amount","type":"uint256"}],"name":"moveToWaves","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":false,"name":"wavesAddress","type":"string"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"WavesTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_owner","type":"address"},{"indexed":true,"name":"_spender","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Approval","type":"event"}]

  • Click OK


How To Watch The Token In Ethereum Wallet / Mist

In Ethereum Wallet / Mist, select the CONTRACTS tab and click WATCH TOKEN to open the Add token window. Then:

  • Under TOKEN CONTRACT ADDRESS, enter 0x74aca0f1a40f7e0f3845dadf52c65060de7749af. The additional fields should automatically be filled in.

  • Click OK


How To Check Your Token Balance In Ethereum Wallet / Mist

Watch The Token Contract, then:

  • Click on the RBX contract
  • Click on SHOW CONTRACT INFO
  • In the READ FROM CONTRACT section and under Balance of:
  • Enter the address you want to check the token balance of
  • The token balance will be displayed in the Natural Units with 8 decimal places, e.g., 123000000 is 123000000 / 1e8 = 1.23 token units


How To Transfer Your Tokens In Ethereum Wallet / Mist

Watch The Token Contract, then:

  • Click on the RBX contract
  • Click on SHOW CONTRACT INFO
  • In the WRITE TO CONTRACT section and under Select function:
  • Select the Transfer function
  • Under to, enter the address you want to transfer the token to
  • Under value, enter the amount of tokens you want to transfer. This amount needs to be specified in the natural units with 8 decimal places, e.g., 123000000 is 123000000 / 1e8 = 1.23 token units
  • Under Execute from, select the account you want to transfer your tokens from
  • Click on Execute, then confirm your transaction


How To Move Your Tokens To The Waves Blockchain In Ethereum Wallet / Mist

Watch The Token Contract, then:

  • Click on the RBX contract
  • Click on SHOW CONTRACT INFO
  • In the WRITE TO CONTRACT section and under Select function:
  • Select the Move To Waves function
  • Under Waves address, enter the correct Waves address you want to transfer the token to
  • Under Amount, enter the amount of tokens you want to transfer. This amount needs to be specified in the natural units with 8 decimal places, e.g., 123000000 is 123000000 / 1e8 = 1.23 token units
  • Under Execute from, select the account you want to transfer your tokens from
  • Click on Execute, then confirm your transaction

The Token Contract Source Code

The verified source code can be found at 0x74aca0f1a40f7e0f3845dadf52c65060de7749af and follows:

pragma solidity ^0.4.8;

// ----------------------------------------------------------------------------------------------
// The Ripto Bux smart contract - to find out more, join the Incent Slack; http://incentinvites.herokuapp.com/
// A collaboration between Incent and Bok :)
// Enjoy. (c) Incent Loyalty Pty Ltd and Bok Consulting Pty Ltd 2017. The MIT Licence.
// ----------------------------------------------------------------------------------------------

// Contract configuration
contract TokenConfig {
    string public constant symbol = "RBX";
    string public constant name = "Ripto Bux";
    uint8 public constant decimals = 8;  // 8 decimal places, the same as tokens on Wave
    uint256 _totalSupply = 100000000000000000;
}

// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/issues/20
contract ERC20Interface {
    // Get the total token supply
    function totalSupply() constant returns (uint256 totalSupply);

    // Get the account balance of another account with address _owner
    function balanceOf(address _owner) constant returns (uint256 balance);

    // Send _value amount of tokens to address _to
    function transfer(address _to, uint256 _value) returns (bool success);

    // Send _value amount of tokens from address _from to address _to
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success);

    // Allow _spender to withdraw from your account, multiple times, up to the _value amount.
    // If this function is called again it overwrites the current allowance with _value.
    // this function is required for some DEX functionality
    function approve(address _spender, uint256 _value) returns (bool success);

    // Returns the amount which _spender is still allowed to withdraw from _owner
    function allowance(address _owner, address _spender) constant returns (uint256 remaining);

    // Triggered when tokens are transferred.
    event Transfer(address indexed _from, address indexed _to, uint256 _value);

    // Triggered whenever approve(address _spender, uint256 _value) is called.
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

contract RiptoBuxToken is ERC20Interface, TokenConfig {
    // Owner of this contract
    address public owner;

    // Balances for each account
    mapping(address => uint256) balances;

    // Owner of account approves the transfer of an amount to another account
    mapping(address => mapping (address => uint256)) allowed;

    // Functions with this modifier can only be executed by the owner
    modifier onlyOwner() {
        if (msg.sender != owner) {
            throw;
        }
        _;
    }

    // Constructor
    function RiptoBuxToken() {
        owner = msg.sender;
        balances[owner] = _totalSupply;
    }

    function totalSupply() constant returns (uint256 totalSupply) {
        totalSupply = _totalSupply;
    }

    // What is the balance of a particular account?
    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balances[_owner];
    }

    // Transfer the balance from owner's account to another account
    function transfer(address _to, uint256 _amount) returns (bool success) {
        if (balances[msg.sender] >= _amount
            && _amount > 0
            && balances[_to] + _amount > balances[_to]) {
            balances[msg.sender] -= _amount;
            balances[_to] += _amount;
            Transfer(msg.sender, _to, _amount);
            return true;
        } else {
            return false;
        }
    }

    // Send _value amount of tokens from address _from to address _to
    // The transferFrom method is used for a withdraw workflow, allowing contracts to send
    // tokens on your behalf, for example to "deposit" to a contract address and/or to charge
    // fees in sub-currencies; the command should fail unless the _from account has
    // deliberately authorized the sender of the message via some mechanism; we propose
    // these standardized APIs for approval:
    function transferFrom(
        address _from,
        address _to,
        uint256 _amount
) returns (bool success) {
        if (balances[_from] >= _amount
            && allowed[_from][msg.sender] >= _amount
            && _amount > 0
            && balances[_to] + _amount > balances[_to]) {
            balances[_from] -= _amount;
            allowed[_from][msg.sender] -= _amount;
            balances[_to] += _amount;
            Transfer(_from, _to, _amount);
            return true;
        } else {
            return false;
        }
    }

    // Allow _spender to withdraw from your account, multiple times, up to the _value amount.
    // If this function is called again it overwrites the current allowance with _value.
    function approve(address _spender, uint256 _amount) returns (bool success) {
        allowed[msg.sender][_spender] = _amount;
        Approval(msg.sender, _spender, _amount);
        return true;
    }

    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }
}

contract WavesEthereumSwap is RiptoBuxToken {
    event WavesTransfer(address indexed _from, string wavesAddress, uint256 amount);

    function moveToWaves(string wavesAddress, uint256 amount) {
        if (!transfer(owner, amount)) throw;
        WavesTransfer(msg.sender, wavesAddress, amount);
    }
}

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