FXXX LandRush

The FxxxLandRush.sol smart contract allow users to purchase of FXXX parcels of land using GZE:0x4AC0 (GazeCoin Metaverse Token) or ethers (ETH).

Purchase price:

The price of each parcel of land is USD 1,500 (and some parcels with variations of this amount)
The ETH purchase amount is calculated using the MakerDAO ETH/USD pricefeed rate at MakerDAOETHUSDPriceFeed:0x729D. The MakerDAOPriceFeedAdaptor.sol deployed to MakerDAOETHUSDPriceFeedAdaptor:0xF31A will reflect the MakerDAO ETH/USD rate
The GZE purchase amount is calculated using the less frequently updated GZE/ETH pricefeed rate that is multiplied by the MakerDAO ETH/USD pricefeed rate. The GZE/ETH pricefeed has been deployed to GZEETHPriceFeed:0xD649
Purchases using GZE will have a 30% discount if the purchasing account has been added to the BonusList.sol deployed to BonusList:0x57D2. Accounts not in the BonusList will get a 20% discount when purchasing with GZE

There are 17 sectors containing parcels of land that will be sold at different timeframes. Each of these sectors will have a unique FxxxLandRush.sol smart contract, and an associated BTTSToken smart contract to record the purchases of these parcels.

When the parcels of land are later available for development, the BTTSToken parcel tokens are exchanged for ERC721 Non-Fungible Token tokens representing the ownership of the FXXX parcels of land.

Deployment Addresses

See deployment for deployment details. See scripts/genData.sh, scripts/deployment.js and scripts/FxxxLandRushSummary.json for deployment statistics.

Purchasing Contract And Token Contract

See Purchasing for instructions to purchase parcels of land from the FxxxLandRush contract.

FxxxLand purchasing contract and token contract for each zone:

Token Symbol / Name	Purchasing Contract / Token Contract Address	Purchase From	Purchase To
FxxxHub / Fantasy Hub	0x3b0c1b99fAAfd625aACD70521d8Da167807B3b82 / 0x5B98a13e7c6Aef063551643B0171d5Cd681BF4da	Oct 16 2018 15:00 PST	Nov 16 2018 15:00 PST
FxxxRk / Fantasy Riot Kitty	0x460E0e607eBD39C8927210A7f32ef7bD170F7d40 / 0xd73b9d06bffA9d8B6D2E5f03de578103531215fF	Nov 19 2018 15:00 PST	Dec 08 2018 15:00 PST
FxxxDude / Fantasy Dude Sweet	0xbF68F58CE089b97b2F7146d2EC097F5Af9Ac217F / 0xc70ABb3546D0976d91D91AaD2773fAE69e106599	Nov 19 2018 15:00 PST	Dec 08 2018 15:00 PST
FxxxBooty / Fantasy Booty Sector	0xf9A6d564217c44ab64E28C7F34CB8fE246f57539 / 0xBC844A541855Cb797163e7f4344616a97a89ccB2	Nov 19 2018 15:00 PST	Dec 08 2018 15:00 PST

Time Conversions:

PST Time	UTC Time	AEST Time	Unix Time	new Date(Unix Time * 1000).toUTCString()
Oct 16 2018 15:00	Oct 16 2018 23:00	Oct 17 2018 10:00	1539730800	"Tue, 16 Oct 2018 23:00:00 UTC"
Nov 16 2018 15:00	Nov 16 2018 23:00	Nov 17 2018 10:00	1542409200	"Fri, 16 Nov 2018 23:00:00 UTC"
Nov 19 2018 15:00	Nov 19 2018 23:00	Nov 20 2018 10:00	1542668400	"Mon, 19 Nov 2018 23:00:00 UTC"
Dec 08 2018 15:00	Dec 08 2018 23:00	Dec 09 2018 10:00	1544310000	"Sat, 08 Dec 2018 23:00:00 UTC"

Available Parcels:

The presale parcels are available for purchase through these FxxxLandRush contracts.

Zone	Presale #	Total #	USD per Parcel
FxxxHub	141	689	1500
FxxxRk	38	200	2500
FxxxDude	12	125	25000
FxxxBooty	16	79	5000

Other Contracts

Contract	Address
MakerDAOETHUSDPriceFeedAdaptor:0xF31A	0xF31AA1dFbEd873Ab957896a0204a016F5E123e02
GZEETHPriceFeed:0xD649	0xD649c9b68BB78e8fd25c0B7a9c22c42f57768c91
BonusList:0x57D2	0x57D2F4B8F55A26DfE8Aba3c9f1c73CADbBc55C46

Deployment And Configuration Of FxxxLandRush Contracts

An FxxxLandRush contract will be deployed for each sector.

Deployment Of FxxxLandRush Contract

Following are the constructor parameters

No	Type	Notes
address	_parcelToken	FxxxLandRush sector token
address	_gzeToken	GZE:0x4AC0 address 0x4AC00f287f36A6Aad655281fE1cA6798C9cb727b
address	_ethUsdPriceFeed	MakerDAOETHUSDPriceFeedAdaptor:0xF31A address 0xF31AA1dFbEd873Ab957896a0204a016F5E123e02
address	_gzeEthPriceFeed	GazeCoin maintained GZEETHPriceFeed:0xD649 address 0xD649c9b68BB78e8fd25c0B7a9c22c42f57768c91
address	_bonusList	BonusList:0x57D2 address 0x57D2F4B8F55A26DfE8Aba3c9f1c73CADbBc55C46
address	_wallet	Wallet for GZE and ETH
uint	_startDate	Start date, in seconds since Jan 01 1970
uint	_endDate	End date, in seconds since Jan 01 1970
uint	_maxParcels	Maximum parcels of land for the sector
uint	_parcelUsd	Price of a parcel of land, in USD. e.g., USD 1,500 is specified as 1,500 * 10^18
uint	_usdLockAccountThreshold	Lock transfers for purchasing account if USD amount exceeds this threshold. e.g. USD 7,000 is specified as 7,000 * 10^18
uint	_gzeBonusOffList	Bonus for accounts not listed in the BonusList contract. e.g. 20% is specified as 20
uint	_gzeBonusOnList	Bonus for accounts listed in the BonusList contract. e.g., 30% is specified as 30

FxxxLandRush Contract Configuration

setWallet

function setWallet(address _wallet)

Parameters:

No	Type	Notes
address	_wallet	Wallet for GZE and ETH

setStartDate

function setStartDate(uint _startDate)

Parameters:

No	Type	Notes
uint	_startDate	Start date, in seconds since Jan 01 1970

setEndDate

function setEndDate(uint _endDate)

Parameters:

No	Type	Notes
uint	_endDate	End date, in seconds since Jan 01 1970

setMaxParcels

function setMaxParcels(uint _maxParcels)

Parameters:

No	Type	Notes
uint	_maxParcels	Maximum parcels of land for the sector

setParcelUsd

function setParcelUsd(uint _parcelUsd)

Parameters:

No	Type	Notes
uint	_parcelUsd	Price of a parcel of land, in USD. e.g., USD 1,500 is specified as 1,500 * 10^18

setUsdLockAccountThreshold

function setUsdLockAccountThreshold(uint _usdLockAccountThreshold)

Parameters:

No	Type	Notes
uint	_usdLockAccountThreshold	Lock transfers for purchasing account if USD amount exceeds this threshold. e.g. USD 7,000 is specified as 7,000 * 10^18

setGzeBonusOffList

function setGzeBonusOffList(uint _gzeBonusOffList)

Parameters:

No	Type	Notes
uint	_gzeBonusOffList	Bonus for accounts not listed in the BonusList contract. e.g. 20% is specified as 20

setGzeBonusOnList

function setGzeBonusOnList(uint _gzeBonusOnList)

Parameters:

No	Type	Notes
uint	_gzeBonusOnList	Bonus for accounts listed in the BonusList contract. e.g., 30% is specified as 30

Updating The GZE/ETH PriceFeed

The GZE/ETH PriceFeed has been deployed to [GZEETHPriceFeed:0x4604]. See Deployment - GZE/ETH PriceFeed for scripts to update the price feed.

Contract address:

0xD649c9b68BB78e8fd25c0B7a9c22c42f57768c91

Contract ABI:

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"operators","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rate","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getRate","outputs":[{"name":"_rate","type":"uint256"},{"name":"_live","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_rate","type":"uint256"},{"name":"_live","type":"bool"}],"name":"setRate","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnershipImmediately","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"live","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_operator","type":"address"}],"name":"addOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_operator","type":"address"}],"name":"removeOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"newOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_name","type":"string"},{"name":"_rate","type":"uint256"},{"name":"_live","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"oldRate","type":"uint256"},{"indexed":false,"name":"oldLive","type":"bool"},{"indexed":false,"name":"newRate","type":"uint256"},{"indexed":false,"name":"newLive","type":"bool"}],"name":"SetRate","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_operator","type":"address"}],"name":"OperatorAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_operator","type":"address"}],"name":"OperatorRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"}],"name":"OwnershipTransferred","type":"event"}]

addOperator

The contract owner adds an operator account that is then permissioned to update the rates. Multiple operators can be permissioned.

function addOperator(address _operator)

Parameters:

No	Type	Notes
uint	_operator	Operator account

removeOperator

The contract owner can remove an operator account's permission.

function removeOperator(address _operator)

Parameters:

No	Type	Notes
uint	_operator	Operator account

setRate

Any permissioned operator account can set the GZE/ETH rate.

function setRate(uint _rate, bool _live)

Parameters:

No	Type	Notes
uint	_rate	GZE/ETH market rate. e.g., 0.00004199 is specified as 0.00004199 * 10^18
bool	_live	Is the price live? If the price is not live, user's will not be able to purchase FxxxLandRush parcels with GZE

Updating The BonusList

The BonusList has been deployed to BonusList:0x57D2. See Deployment - BonusList for scripts to update the bonus list.

Contract address:

0x57D2F4B8F55A26DfE8Aba3c9f1c73CADbBc55C46

Contract ABI:

[{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"operators","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"accounts","type":"address[]"}],"name":"remove","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"bonusList","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnershipImmediately","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"account","type":"address"}],"name":"isInBonusList","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_operator","type":"address"}],"name":"addOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_operator","type":"address"}],"name":"removeOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"accounts","type":"address[]"}],"name":"add","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"newOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"account","type":"address"},{"indexed":false,"name":"status","type":"bool"}],"name":"AccountListed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_operator","type":"address"}],"name":"OperatorAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_operator","type":"address"}],"name":"OperatorRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"}],"name":"OwnershipTransferred","type":"event"}]

addOperator

The contract owner adds an operator account that is then permissioned to update the bonus list. Multiple operators can be permissioned.

function addOperator(address _operator)

Parameters:

No	Type	Notes
uint	_operator	Operator account

removeOperator

The contract owner can remove an operator account's permission.

function removeOperator(address _operator)

Parameters:

No	Type	Notes
uint	_operator	Operator account

add

Any permissioned operator account can add one or more addresses to the bonus list.

function add(address[] accounts)

Parameters:

No	Type	Notes
address[]	accounts	Array of accounts to add to the bonus list

remove

Any permissioned operator account can remove one or more addresses from the bonus list.

function remove(address[] accounts)

Parameters:

No	Type	Notes
address[]	accounts	Array of accounts to remove from the bonus list

Code Review

code-review/Owned.md
- contract Owned
code-review/Operated.md
- contract Operated is Owned
code-review/SafeMath.md
- library SafeMath
code-review/ERC20Interface.md
- contract ERC20Interface
code-review/BonusListInterface.md
- contract BonusListInterface
code-review/BonusList.md
- contract BonusList is BonusListInterface, Operated
code-review/PriceFeedInterface.md
- contract PriceFeedInterface
code-review/PriceFeed.md
- contract PriceFeed is Operated
code-review/MakerDAOETHUSDPriceFeedSimulator.md
- contract MakerDAOETHUSDPriceFeedSimulator is Owned
code-review/MakerDAOPriceFeedAdaptor.md
- contract MakerDAOPriceFeedInterface
- contract MakerDAOPriceFeedAdaptor is PriceFeedInterface
code-review/FxxxLandRush.md
- contract FxxxLandRush is Owned, ApproveAndCallFallBack
  - using SafeMath for uint;

Outside Scope

Outside scope as the following have been audited:

contracts/BTTSTokenInterface110.sol
- contract ApproveAndCallFallBack
- contract BTTSTokenInterface is ERC20Interface
contracts/BTTSTokenFactory110.sol
- contract ERC20Interface
- contract ApproveAndCallFallBack
- contract BTTSTokenInterface is ERC20Interface
- library BTTSLib
- contract BTTSToken is BTTSTokenInterface
  - using BTTSLib for BTTSLib.Data;
- contract Owned
- contract BTTSTokenFactory is Owned

Thanks to Adrian Guerrera for helping to validate these contracts.

(c) BokkyPooBah / Bok Consulting Pty Ltd for GazeCoin - Oct 08 2018. The MIT Licence.

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README.md

README.md

FXXX LandRush

Table Of Contents

Deployment Addresses

Purchasing Contract And Token Contract

Other Contracts

Deployment And Configuration Of FxxxLandRush Contracts

Deployment Of FxxxLandRush Contract

FxxxLandRush Contract Configuration

setWallet

setStartDate

setEndDate

setMaxParcels

setParcelUsd

setUsdLockAccountThreshold

setGzeBonusOffList

setGzeBonusOnList

Updating The GZE/ETH PriceFeed

addOperator

removeOperator

setRate

Updating The BonusList

addOperator

removeOperator

add

remove

Code Review

Outside Scope

Files

README.md

Latest commit

History

README.md

File metadata and controls

FXXX LandRush

Table Of Contents

Deployment Addresses

Purchasing Contract And Token Contract

Other Contracts

Deployment And Configuration Of FxxxLandRush Contracts

Deployment Of FxxxLandRush Contract

FxxxLandRush Contract Configuration

setWallet

setStartDate

setEndDate

setMaxParcels

setParcelUsd

setUsdLockAccountThreshold

setGzeBonusOffList

setGzeBonusOnList

Updating The GZE/ETH PriceFeed

addOperator

removeOperator

setRate

Updating The BonusList

addOperator

removeOperator

add

remove

Code Review

Outside Scope