Sponsored:   Ubex.com - Token sale will end in just 5 days. 98% hard cap already reached. Don't Miss Out!
Contract Overview
Balance: 1.381819222566242443 Ether
Ether Value: $291.16 (@ $210.71/ETH)
Transactions: 2761 txns
Token Tracker: EthPyramid (EPY)
 Latest 25 txns From a total of 2761 Transactions
(+1 PendingTxn)

TxHash Age From To Value [TxFee]
0xea72687bbc7b3ffaa61f694849ed4225a98b751291b6daea22262cbb6f3bbcf9(pending)0xb1070fec856b2eccc8b6abc714470b8232f7c62c  IN  0x029d0650c81817afb1810ae102708233183218780 Ether(Pending)
0x05ee59b9e4f1513edd1413b511c69cd04c6e4fea642b1065153bc38de8dd5b1c59 days 5 hrs ago0x2478b5684da7ef83fed4db126e27a8ae8f9632ec  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000065513
0x660ea75149f9478177cc656c9d328464b7d24f695bb4ee1d8c9cde4e29a6956659 days 9 hrs ago0x7bc0c28e3d00b2b85d3e9487187c2a4bccad6e61  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000262052
0x5aa0a3e5e816d87bfabf6ee622f2e7de15bd688e412ebe8c80e6a62c9fc23adc59 days 16 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000062627
0x889055ab29a36b794f0d7ddc9a515afd07d57ea5f9775d031cf2d10d90dd685963 days 6 hrs ago0x2478b5684da7ef83fed4db126e27a8ae8f9632ec  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.0002030903
0x549256c0a34a2247f69b95a4d85764b31eab34547bf20d19a727af00330a8a7d70 days 20 hrs ago0x39e1987f4189ab04f9f322bb1be51019d3891a51  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000413343
0xaf9425337af595b126a41b6a72dee34f5dd848f5f63d53df9b3c7d32d575210870 days 20 hrs ago0x39e1987f4189ab04f9f322bb1be51019d3891a51  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000344025
0x89fe56f74a65ce76a946f6ab3469e1f2dfcf9f4fe7d1d8765d7111f696684c7993 days 10 hrs ago0x16a15d7c50cf714313898a3402dd0511c4fcdd30  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.00001565675
0xfba5f68760fbb58606f75cecc79bef2fe09db9fc5d9c541d6bccc2d6b90c01e494 days 12 hrs ago0xea9d92ec9c7cee17674a210d2f5b912ea4b624f4  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000045927
0x4e337d3e52c8772ed34d6f1329ccb78f8193a3bc10a1cff7f203d7437b4b30c394 days 15 hrs ago0xea9d92ec9c7cee17674a210d2f5b912ea4b624f4  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000038225
0x812f189e8e40fbba689764a9a4d31fe95c60457de70c71e4df389e1d97acaaca107 days 10 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.00012629925
0xcd7f481c445bc00eb423558b80ccbaf5c89ac12b3c56683384008546470682f0107 days 11 hrs ago0x67b71798881f75e94625c59ebe378ca9db6735ce  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.00018016075
0xb233200296d44d03713567e5a2a8a2cde49ef7b7cb390997b79228feb4f77393110 days 1 hr ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.00062627
0x1ec14249e7ef2fa4c1d61e03ae9b616ca3beeee753efbca72758c7cff17f466d114 days 1 hr ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000413343
0x13c2c9a7ce9abc8cb48eaa3d6d188f2a4a36b9f6aa58e78db31bb10cd1fc42fe114 days 9 hrs ago0x2478b5684da7ef83fed4db126e27a8ae8f9632ec  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000261764
0x8f2e1c6567d8117130d2120e684c8a97a6340b3726d333e6384be7ad401ae495115 days 6 hrs ago0x2478b5684da7ef83fed4db126e27a8ae8f9632ec  IN   0x029d0650c81817afb1810ae102708233183218780.04 Ether0.000355086
0x3e04084b963334b1a18295c510ccbf9143db8e14c1f260da9b20bf88e0b79c98117 days 13 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.0003720087
0x09d3cfd68815f9a35f62c1ee64dd9692bc26c7de493bae5d8c7fe5374994deab117 days 19 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x029d0650c81817afb1810ae102708233183218780.1 Ether0.00148362
0xa370c91bbdba0ca58b69922bfb4ea5ae95b65eac47a25e0967c5ba38f55faf8d118 days 14 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000751524
0xa0cc9c9bd7e09b48b35d6f772fc55ea3bf194448490626a0fea085927738075e120 days 1 hr ago0x2478b5684da7ef83fed4db126e27a8ae8f9632ec  IN   0x029d0650c81817afb1810ae102708233183218780.04 Ether0.000532629
0xa3a8b50aa9f1983f85a0f4a13a3667e9ae1a278019604bef01fb243a8d35d6fc121 days 16 hrs ago0x391a3ea52c4a9f04be6900c3fd057dd9676c72e1  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000312775
0x70b714997304a99bb207bd5c02901a8b7c7d3890bed90d5986f2b2c37d9931d1122 days 31 mins ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.00062555
0x02c8a197a87939ab15569f9b003eabfc9680bb410afee7bc10dad253d523d8d7125 days 16 mins ago0x2478b5684da7ef83fed4db126e27a8ae8f9632ec  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.000719851
0x86c60ffec2bb4b5c079a8fa8525c0cae0b089906d9b8bcf324f9f2d36a264c79127 days 20 hrs ago0x6620aa7390413099623e514627a08cdbd02d73c7  IN   0x029d0650c81817afb1810ae102708233183218780 Ether0.0001313655
0xd593a007849385163bbf45867aa0f0fa8d58164d9eb14cb5bcd6afdd88e60ee4128 days 15 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x029d0650c81817afb1810ae102708233183218780.005 Ether0.00059181
[ Download CSV Export  ] 
 Internal Transactions as a result of Contract Execution
 Latest 25 Internal Txns, Click Here To View More View All
ParentTxHash Block Age From To Value
0x5aa0a3e5e816d87bfabf6ee622f2e7de15bd688e412ebe8c80e6a62c9fc23adc604067059 days 16 hrs ago0x029d0650c81817afb1810ae102708233183218780x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.073004960403109958 Ether
0x549256c0a34a2247f69b95a4d85764b31eab34547bf20d19a727af00330a8a7d597530170 days 20 hrs ago0x029d0650c81817afb1810ae102708233183218780x39e1987f4189ab04f9f322bb1be51019d3891a510.03616867977447151 Ether
0x89fe56f74a65ce76a946f6ab3469e1f2dfcf9f4fe7d1d8765d7111f696684c79584320193 days 10 hrs ago0x029d0650c81817afb1810ae102708233183218780x16a15d7c50cf714313898a3402dd0511c4fcdd300.00144451698549964 Ether
0xfba5f68760fbb58606f75cecc79bef2fe09db9fc5d9c541d6bccc2d6b90c01e4583665594 days 12 hrs ago0x029d0650c81817afb1810ae102708233183218780xea9d92ec9c7cee17674a210d2f5b912ea4b624f40.004967446875600933 Ether
0x812f189e8e40fbba689764a9a4d31fe95c60457de70c71e4df389e1d97acaaca5761681107 days 10 hrs ago0x029d0650c81817afb1810ae102708233183218780x415e94a5246ac4d3f16a833f51ff9066f215a4210.001388005096065653 Ether
0xb233200296d44d03713567e5a2a8a2cde49ef7b7cb390997b79228feb4f773935746886110 days 1 hr ago0x029d0650c81817afb1810ae102708233183218780x361084af8d45e07885b31fcedcb642b9cc7b72d70.104191819421279375 Ether
0x1ec14249e7ef2fa4c1d61e03ae9b616ca3beeee753efbca72758c7cff17f466d5724383114 days 1 hr ago0x029d0650c81817afb1810ae102708233183218780x361084af8d45e07885b31fcedcb642b9cc7b72d70.005885526546936243 Ether
0x3e04084b963334b1a18295c510ccbf9143db8e14c1f260da9b20bf88e0b79c985704740117 days 13 hrs ago0x029d0650c81817afb1810ae102708233183218780x415e94a5246ac4d3f16a833f51ff9066f215a4210.005647283145793895 Ether
0xa370c91bbdba0ca58b69922bfb4ea5ae95b65eac47a25e0967c5ba38f55faf8d5699010118 days 14 hrs ago0x029d0650c81817afb1810ae102708233183218780x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.129101221144275706 Ether
0xa3a8b50aa9f1983f85a0f4a13a3667e9ae1a278019604bef01fb243a8d35d6fc5681443121 days 16 hrs ago0x029d0650c81817afb1810ae102708233183218780x391a3ea52c4a9f04be6900c3fd057dd9676c72e10.00766035491614004 Ether
0x70b714997304a99bb207bd5c02901a8b7c7d3890bed90d5986f2b2c37d9931d15679516122 days 31 mins ago0x029d0650c81817afb1810ae102708233183218780x341c48c0e833e179cca6c605b823e9a4911a3d000.003669759590100555 Ether
0x86c60ffec2bb4b5c079a8fa8525c0cae0b089906d9b8bcf324f9f2d36a264c795646749127 days 20 hrs ago0x029d0650c81817afb1810ae102708233183218780x6620aa7390413099623e514627a08cdbd02d73c70.001617107767342575 Ether
0x619098d4d95f15d2e4b94ebee34b1643b239c2a3f6233d7049367b549359ce3b5603791135 days 9 hrs ago0x029d0650c81817afb1810ae102708233183218780x8d431f225526f9f52c6441358c44cef124a1516b0.067715255100898305 Ether
0x7ba38516bff0dafff9a473062bd28ba58569d88c12c71385899c61509f35ea945603733135 days 10 hrs ago0x029d0650c81817afb1810ae102708233183218780x1ed45acba1c716c8fbe88aa35d27842fb612e20a0.162267666038203918 Ether
0x896521c79035e233b69d92410918a8714fd9cc05c21cea183671ad9021210de75589202137 days 22 hrs ago0x029d0650c81817afb1810ae102708233183218780x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd420.017053466921042694 Ether
0xff11c4e0ac1f0708fab5dc080fcfc6375a2ede5b6a6662bb4e0cc0c995a74df35550386144 days 17 hrs ago0x029d0650c81817afb1810ae102708233183218780x341c48c0e833e179cca6c605b823e9a4911a3d000.0036090313972712 Ether
0x6c4721fa580e5f4f2a36c85a14dc16f97b4dbc9c4fd59753d522b66497795d6a5544173145 days 19 hrs ago0x029d0650c81817afb1810ae102708233183218780x415e94a5246ac4d3f16a833f51ff9066f215a4210.001541335342397662 Ether
0x8f5ba9761c0919538419de99087b6f1b6416258c7938fdbb49b0917883e80bed5543533145 days 22 hrs ago0x029d0650c81817afb1810ae102708233183218780x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd420.00134833042517113 Ether
0x95d3efaf9905dd24484afc85bbbfc91c810c40e4079e83a7cda1598812315f2e5538270146 days 20 hrs ago0x029d0650c81817afb1810ae102708233183218780x415e94a5246ac4d3f16a833f51ff9066f215a4210.001442504625083726 Ether
0x5697f27aa8f22f6a7e6a055cad883acd232997cc162cba28505f3b6f512d7bc85538215146 days 20 hrs ago0x029d0650c81817afb1810ae102708233183218780x67b71798881f75e94625c59ebe378ca9db6735ce0.001051424176306595 Ether
0x1c98304ae9a6f4e53549de2a06a297e2bf64aee42c67ce3d67f81b2ec1a902055534187147 days 13 hrs ago0x029d0650c81817afb1810ae102708233183218780x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.010367637375885361 Ether
0xd1d8f038cc49e465cbc8c4f7b1e1b2a76c5e4880a5b959555acfbc0e960583995531199148 days 2 hrs ago0x029d0650c81817afb1810ae102708233183218780xaec539a116fa75e8bdcf016d3c146a25bc1af93b0.159151370663258717 Ether
0x8a15978d353b186d5be2479dd26322d9ee6d5b6d7d4d15d784caa2c5ecb0421f5528805148 days 12 hrs ago0x029d0650c81817afb1810ae102708233183218780x415e94a5246ac4d3f16a833f51ff9066f215a4210.001208619175630319 Ether
0xcc89d2750b34b41b6559a0be8891a2c8cae8697da9fe40208ca4d4bec0f057bb5524963149 days 4 hrs ago0x029d0650c81817afb1810ae102708233183218780x4749bc73e7e65686676b84ee65b29e4681d595350.189348180091033811 Ether
0x866116e42a0c404df67578100d3c5bd8999eb95de71d489a2f5be972618ac1d25500013153 days 11 hrs ago0x029d0650c81817afb1810ae102708233183218780x9d7007416e7ccb2c352463d42640acc6c95eda6e0.000973676812957892 Ether
[ Download CSV Export  ] 
Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity), NestedArrayFunctionCallDecoder (medium-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Similar Match)
Note: Displaying Similar Match Verified Source Code At Contract 0xc908a34165d2720d12ffcfb6b99b47161b1c9946(Excluding Constructor Arguments if_any)
Contract Name: EthPyramid
Compiler Text: v0.4.20-nightly.2018.1.29+commit.a668b9de
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.18;

/*
          ,/`.
        ,'/ __`.
      ,'_/_  _ _`.
    ,'__/_ ___ _  `.
  ,'_  /___ __ _ __ `.
 '-.._/___...-"-.-..__`.
  B

 EthPyramid. A no-bullshit, transparent, self-sustaining pyramid scheme.
 
 Inspired by https://test.jochen-hoenicke.de/eth/ponzitoken/

 Developers:
	Arc
	Divine
	Norsefire
	ToCsIcK
	
 Front-End:
	Cardioth
	tenmei
	Trendium
	
 Moral Support:
	DeadCow.Rat
	Dots
	FatKreamy
	Kaseylol
	QuantumDeath666
	Quentin
 
 Shit-Tier:
	HentaiChrist
 
*/

contract EthPyramid {

	// scaleFactor is used to convert Ether into tokens and vice-versa: they're of different
	// orders of magnitude, hence the need to bridge between the two.
	uint256 constant scaleFactor = 0x10000000000000000;  // 2^64

	// CRR = 50%
	// CRR is Cash Reserve Ratio (in this case Crypto Reserve Ratio).
	// For more on this: check out https://en.wikipedia.org/wiki/Reserve_requirement
	int constant crr_n = 1; // CRR numerator
	int constant crr_d = 2; // CRR denominator

	// The price coefficient. Chosen such that at 1 token total supply
	// the amount in reserve is 0.5 ether and token price is 1 Ether.
	int constant price_coeff = -0x296ABF784A358468C;

	// Typical values that we have to declare.
	string constant public name = "EthPyramid";
	string constant public symbol = "EPY";
	uint8 constant public decimals = 18;

	// Array between each address and their number of tokens.
	mapping(address => uint256) public tokenBalance;
		
	// Array between each address and how much Ether has been paid out to it.
	// Note that this is scaled by the scaleFactor variable.
	mapping(address => int256) public payouts;

	// Variable tracking how many tokens are in existence overall.
	uint256 public totalSupply;

	// Aggregate sum of all payouts.
	// Note that this is scaled by the scaleFactor variable.
	int256 totalPayouts;

	// Variable tracking how much Ether each token is currently worth.
	// Note that this is scaled by the scaleFactor variable.
	uint256 earningsPerToken;
	
	// Current contract balance in Ether
	uint256 public contractBalance;

	function EthPyramid() public {}

	// The following functions are used by the front-end for display purposes.

	// Returns the number of tokens currently held by _owner.
	function balanceOf(address _owner) public constant returns (uint256 balance) {
		return tokenBalance[_owner];
	}

	// Withdraws all dividends held by the caller sending the transaction, updates
	// the requisite global variables, and transfers Ether back to the caller.
	function withdraw() public {
		// Retrieve the dividends associated with the address the request came from.
		var balance = dividends(msg.sender);
		
		// Update the payouts array, incrementing the request address by `balance`.
		payouts[msg.sender] += (int256) (balance * scaleFactor);
		
		// Increase the total amount that's been paid out to maintain invariance.
		totalPayouts += (int256) (balance * scaleFactor);
		
		// Send the dividends to the address that requested the withdraw.
		contractBalance = sub(contractBalance, balance);
		msg.sender.transfer(balance);
	}

	// Converts the Ether accrued as dividends back into EPY tokens without having to
	// withdraw it first. Saves on gas and potential price spike loss.
	function reinvestDividends() public {
		// Retrieve the dividends associated with the address the request came from.
		var balance = dividends(msg.sender);
		
		// Update the payouts array, incrementing the request address by `balance`.
		// Since this is essentially a shortcut to withdrawing and reinvesting, this step still holds.
		payouts[msg.sender] += (int256) (balance * scaleFactor);
		
		// Increase the total amount that's been paid out to maintain invariance.
		totalPayouts += (int256) (balance * scaleFactor);
		
		// Assign balance to a new variable.
		uint value_ = (uint) (balance);
		
		// If your dividends are worth less than 1 szabo, or more than a million Ether
		// (in which case, why are you even here), abort.
		if (value_ < 0.000001 ether || value_ > 1000000 ether)
			revert();
			
		// msg.sender is the address of the caller.
		var sender = msg.sender;
		
		// A temporary reserve variable used for calculating the reward the holder gets for buying tokens.
		// (Yes, the buyer receives a part of the distribution as well!)
		var res = reserve() - balance;

		// 10% of the total Ether sent is used to pay existing holders.
		var fee = div(value_, 10);
		
		// The amount of Ether used to purchase new tokens for the caller.
		var numEther = value_ - fee;
		
		// The number of tokens which can be purchased for numEther.
		var numTokens = calculateDividendTokens(numEther, balance);
		
		// The buyer fee, scaled by the scaleFactor variable.
		var buyerFee = fee * scaleFactor;
		
		// Check that we have tokens in existence (this should always be true), or
		// else you're gonna have a bad time.
		if (totalSupply > 0) {
			// Compute the bonus co-efficient for all existing holders and the buyer.
			// The buyer receives part of the distribution for each token bought in the
			// same way they would have if they bought each token individually.
			var bonusCoEff =
			    (scaleFactor - (res + numEther) * numTokens * scaleFactor / (totalSupply + numTokens) / numEther)
			    * (uint)(crr_d) / (uint)(crr_d-crr_n);
				
			// The total reward to be distributed amongst the masses is the fee (in Ether)
			// multiplied by the bonus co-efficient.
			var holderReward = fee * bonusCoEff;
			
			buyerFee -= holderReward;

			// Fee is distributed to all existing token holders before the new tokens are purchased.
			// rewardPerShare is the amount gained per token thanks to this buy-in.
			var rewardPerShare = holderReward / totalSupply;
			
			// The Ether value per token is increased proportionally.
			earningsPerToken += rewardPerShare;
		}
		
		// Add the numTokens which were just created to the total supply. We're a crypto central bank!
		totalSupply = add(totalSupply, numTokens);
		
		// Assign the tokens to the balance of the buyer.
		tokenBalance[sender] = add(tokenBalance[sender], numTokens);
		
		// Update the payout array so that the buyer cannot claim dividends on previous purchases.
		// Also include the fee paid for entering the scheme.
		// First we compute how much was just paid out to the buyer...
		var payoutDiff  = (int256) ((earningsPerToken * numTokens) - buyerFee);
		
		// Then we update the payouts array for the buyer with this amount...
		payouts[sender] += payoutDiff;
		
		// And then we finally add it to the variable tracking the total amount spent to maintain invariance.
		totalPayouts    += payoutDiff;
		
	}

	// Sells your tokens for Ether. This Ether is assigned to the callers entry
	// in the tokenBalance array, and therefore is shown as a dividend. A second
	// call to withdraw() must be made to invoke the transfer of Ether back to your address.
	function sellMyTokens() public {
		var balance = balanceOf(msg.sender);
		sell(balance);
	}

	// The slam-the-button escape hatch. Sells the callers tokens for Ether, then immediately
	// invokes the withdraw() function, sending the resulting Ether to the callers address.
    function getMeOutOfHere() public {
		sellMyTokens();
        withdraw();
	}

	// Gatekeeper function to check if the amount of Ether being sent isn't either
	// too small or too large. If it passes, goes direct to buy().
	function fund() payable public {
		// Don't allow for funding if the amount of Ether sent is less than 1 szabo.
		if (msg.value > 0.000001 ether) {
		    contractBalance = add(contractBalance, msg.value);
			buy();
		} else {
			revert();
		}
    }

	// Function that returns the (dynamic) price of buying a finney worth of tokens.
	function buyPrice() public constant returns (uint) {
		return getTokensForEther(1 finney);
	}

	// Function that returns the (dynamic) price of selling a single token.
	function sellPrice() public constant returns (uint) {
        var eth = getEtherForTokens(1 finney);
        var fee = div(eth, 10);
        return eth - fee;
    }

	// Calculate the current dividends associated with the caller address. This is the net result
	// of multiplying the number of tokens held by their current value in Ether and subtracting the
	// Ether that has already been paid out.
	function dividends(address _owner) public constant returns (uint256 amount) {
		return (uint256) ((int256)(earningsPerToken * tokenBalance[_owner]) - payouts[_owner]) / scaleFactor;
	}

	// Version of withdraw that extracts the dividends and sends the Ether to the caller.
	// This is only used in the case when there is no transaction data, and that should be
	// quite rare unless interacting directly with the smart contract.
	function withdrawOld(address to) public {
		// Retrieve the dividends associated with the address the request came from.
		var balance = dividends(msg.sender);
		
		// Update the payouts array, incrementing the request address by `balance`.
		payouts[msg.sender] += (int256) (balance * scaleFactor);
		
		// Increase the total amount that's been paid out to maintain invariance.
		totalPayouts += (int256) (balance * scaleFactor);
		
		// Send the dividends to the address that requested the withdraw.
		contractBalance = sub(contractBalance, balance);
		to.transfer(balance);		
	}

	// Internal balance function, used to calculate the dynamic reserve value.
	function balance() internal constant returns (uint256 amount) {
		// msg.value is the amount of Ether sent by the transaction.
		return contractBalance - msg.value;
	}

	function buy() internal {
		// Any transaction of less than 1 szabo is likely to be worth less than the gas used to send it.
		if (msg.value < 0.000001 ether || msg.value > 1000000 ether)
			revert();
						
		// msg.sender is the address of the caller.
		var sender = msg.sender;
		
		// 10% of the total Ether sent is used to pay existing holders.
		var fee = div(msg.value, 10);
		
		// The amount of Ether used to purchase new tokens for the caller.
		var numEther = msg.value - fee;
		
		// The number of tokens which can be purchased for numEther.
		var numTokens = getTokensForEther(numEther);
		
		// The buyer fee, scaled by the scaleFactor variable.
		var buyerFee = fee * scaleFactor;
		
		// Check that we have tokens in existence (this should always be true), or
		// else you're gonna have a bad time.
		if (totalSupply > 0) {
			// Compute the bonus co-efficient for all existing holders and the buyer.
			// The buyer receives part of the distribution for each token bought in the
			// same way they would have if they bought each token individually.
			var bonusCoEff =
			    (scaleFactor - (reserve() + numEther) * numTokens * scaleFactor / (totalSupply + numTokens) / numEther)
			    * (uint)(crr_d) / (uint)(crr_d-crr_n);
				
			// The total reward to be distributed amongst the masses is the fee (in Ether)
			// multiplied by the bonus co-efficient.
			var holderReward = fee * bonusCoEff;
			
			buyerFee -= holderReward;

			// Fee is distributed to all existing token holders before the new tokens are purchased.
			// rewardPerShare is the amount gained per token thanks to this buy-in.
			var rewardPerShare = holderReward / totalSupply;
			
			// The Ether value per token is increased proportionally.
			earningsPerToken += rewardPerShare;
			
		}

		// Add the numTokens which were just created to the total supply. We're a crypto central bank!
		totalSupply = add(totalSupply, numTokens);

		// Assign the tokens to the balance of the buyer.
		tokenBalance[sender] = add(tokenBalance[sender], numTokens);

		// Update the payout array so that the buyer cannot claim dividends on previous purchases.
		// Also include the fee paid for entering the scheme.
		// First we compute how much was just paid out to the buyer...
		var payoutDiff = (int256) ((earningsPerToken * numTokens) - buyerFee);
		
		// Then we update the payouts array for the buyer with this amount...
		payouts[sender] += payoutDiff;
		
		// And then we finally add it to the variable tracking the total amount spent to maintain invariance.
		totalPayouts    += payoutDiff;
		
	}

	// Sell function that takes tokens and converts them into Ether. Also comes with a 10% fee
	// to discouraging dumping, and means that if someone near the top sells, the fee distributed
	// will be *significant*.
	function sell(uint256 amount) internal {
	    // Calculate the amount of Ether that the holders tokens sell for at the current sell price.
		var numEthersBeforeFee = getEtherForTokens(amount);
		
		// 10% of the resulting Ether is used to pay remaining holders.
        var fee = div(numEthersBeforeFee, 10);
		
		// Net Ether for the seller after the fee has been subtracted.
        var numEthers = numEthersBeforeFee - fee;
		
		// *Remove* the numTokens which were just sold from the total supply. We're /definitely/ a crypto central bank.
		totalSupply = sub(totalSupply, amount);
		
        // Remove the tokens from the balance of the buyer.
		tokenBalance[msg.sender] = sub(tokenBalance[msg.sender], amount);

        // Update the payout array so that the seller cannot claim future dividends unless they buy back in.
		// First we compute how much was just paid out to the seller...
		var payoutDiff = (int256) (earningsPerToken * amount + (numEthers * scaleFactor));
		
        // We reduce the amount paid out to the seller (this effectively resets their payouts value to zero,
		// since they're selling all of their tokens). This makes sure the seller isn't disadvantaged if
		// they decide to buy back in.
		payouts[msg.sender] -= payoutDiff;		
		
		// Decrease the total amount that's been paid out to maintain invariance.
        totalPayouts -= payoutDiff;
		
		// Check that we have tokens in existence (this is a bit of an irrelevant check since we're
		// selling tokens, but it guards against division by zero).
		if (totalSupply > 0) {
			// Scale the Ether taken as the selling fee by the scaleFactor variable.
			var etherFee = fee * scaleFactor;
			
			// Fee is distributed to all remaining token holders.
			// rewardPerShare is the amount gained per token thanks to this sell.
			var rewardPerShare = etherFee / totalSupply;
			
			// The Ether value per token is increased proportionally.
			earningsPerToken = add(earningsPerToken, rewardPerShare);
		}
	}
	
	// Dynamic value of Ether in reserve, according to the CRR requirement.
	function reserve() internal constant returns (uint256 amount) {
		return sub(balance(),
			 ((uint256) ((int256) (earningsPerToken * totalSupply) - totalPayouts) / scaleFactor));
	}

	// Calculates the number of tokens that can be bought for a given amount of Ether, according to the
	// dynamic reserve and totalSupply values (derived from the buy and sell prices).
	function getTokensForEther(uint256 ethervalue) public constant returns (uint256 tokens) {
		return sub(fixedExp(fixedLog(reserve() + ethervalue)*crr_n/crr_d + price_coeff), totalSupply);
	}

	// Semantically similar to getTokensForEther, but subtracts the callers balance from the amount of Ether returned for conversion.
	function calculateDividendTokens(uint256 ethervalue, uint256 subvalue) public constant returns (uint256 tokens) {
		return sub(fixedExp(fixedLog(reserve() - subvalue + ethervalue)*crr_n/crr_d + price_coeff), totalSupply);
	}

	// Converts a number tokens into an Ether value.
	function getEtherForTokens(uint256 tokens) public constant returns (uint256 ethervalue) {
		// How much reserve Ether do we have left in the contract?
		var reserveAmount = reserve();

		// If you're the Highlander (or bagholder), you get The Prize. Everything left in the vault.
		if (tokens == totalSupply)
			return reserveAmount;

		// If there would be excess Ether left after the transaction this is called within, return the Ether
		// corresponding to the equation in Dr Jochen Hoenicke's original Ponzi paper, which can be found
		// at https://test.jochen-hoenicke.de/eth/ponzitoken/ in the third equation, with the CRR numerator 
		// and denominator altered to 1 and 2 respectively.
		return sub(reserveAmount, fixedExp((fixedLog(totalSupply - tokens) - price_coeff) * crr_d/crr_n));
	}

	// You don't care about these, but if you really do they're hex values for 
	// co-efficients used to simulate approximations of the log and exp functions.
	int256  constant one        = 0x10000000000000000;
	uint256 constant sqrt2      = 0x16a09e667f3bcc908;
	uint256 constant sqrtdot5   = 0x0b504f333f9de6484;
	int256  constant ln2        = 0x0b17217f7d1cf79ac;
	int256  constant ln2_64dot5 = 0x2cb53f09f05cc627c8;
	int256  constant c1         = 0x1ffffffffff9dac9b;
	int256  constant c3         = 0x0aaaaaaac16877908;
	int256  constant c5         = 0x0666664e5e9fa0c99;
	int256  constant c7         = 0x049254026a7630acf;
	int256  constant c9         = 0x038bd75ed37753d68;
	int256  constant c11        = 0x03284a0c14610924f;

	// The polynomial R = c1*x + c3*x^3 + ... + c11 * x^11
	// approximates the function log(1+x)-log(1-x)
	// Hence R(s) = log((1+s)/(1-s)) = log(a)
	function fixedLog(uint256 a) internal pure returns (int256 log) {
		int32 scale = 0;
		while (a > sqrt2) {
			a /= 2;
			scale++;
		}
		while (a <= sqrtdot5) {
			a *= 2;
			scale--;
		}
		int256 s = (((int256)(a) - one) * one) / ((int256)(a) + one);
		var z = (s*s) / one;
		return scale * ln2 +
			(s*(c1 + (z*(c3 + (z*(c5 + (z*(c7 + (z*(c9 + (z*c11/one))
				/one))/one))/one))/one))/one);
	}

	int256 constant c2 =  0x02aaaaaaaaa015db0;
	int256 constant c4 = -0x000b60b60808399d1;
	int256 constant c6 =  0x0000455956bccdd06;
	int256 constant c8 = -0x000001b893ad04b3a;
	
	// The polynomial R = 2 + c2*x^2 + c4*x^4 + ...
	// approximates the function x*(exp(x)+1)/(exp(x)-1)
	// Hence exp(x) = (R(x)+x)/(R(x)-x)
	function fixedExp(int256 a) internal pure returns (uint256 exp) {
		int256 scale = (a + (ln2_64dot5)) / ln2 - 64;
		a -= scale*ln2;
		int256 z = (a*a) / one;
		int256 R = ((int256)(2) * one) +
			(z*(c2 + (z*(c4 + (z*(c6 + (z*c8/one))/one))/one))/one);
		exp = (uint256) (((R + a) * one) / (R - a));
		if (scale >= 0)
			exp <<= scale;
		else
			exp >>= -scale;
		return exp;
	}
	
	// The below are safemath implementations of the four arithmetic operators
	// designed to explicitly prevent over- and under-flows of integer values.

	function mul(uint256 a, uint256 b) internal pure returns (uint256) {
		if (a == 0) {
			return 0;
		}
		uint256 c = a * b;
		assert(c / a == b);
		return c;
	}

	function div(uint256 a, uint256 b) internal pure returns (uint256) {
		// assert(b > 0); // Solidity automatically throws when dividing by 0
		uint256 c = a / b;
		// assert(a == b * c + a % b); // There is no case in which this doesn't hold
		return c;
	}

	function sub(uint256 a, uint256 b) internal pure returns (uint256) {
		assert(b <= a);
		return a - b;
	}

	function add(uint256 a, uint256 b) internal pure returns (uint256) {
		uint256 c = a + b;
		assert(c >= a);
		return c;
	}

	// This allows you to buy tokens by sending Ether directly to the smart contract
	// without including any transaction data (useful for, say, mobile wallet apps).
	function () payable public {
		// msg.value is the amount of Ether sent by the transaction.
		if (msg.value > 0) {
			fund();
		} else {
			withdrawOld(msg.sender);
		}
	}
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"}],"name":"withdrawOld","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"sellPrice","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"ethervalue","type":"uint256"}],"name":"getTokensForEther","outputs":[{"name":"tokens","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"payouts","outputs":[{"name":"","type":"int256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"dividends","outputs":[{"name":"amount","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"buyPrice","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"contractBalance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"reinvestDividends","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"getMeOutOfHere","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"fund","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"tokens","type":"uint256"}],"name":"getEtherForTokens","outputs":[{"name":"ethervalue","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"ethervalue","type":"uint256"},{"name":"subvalue","type":"uint256"}],"name":"calculateDividendTokens","outputs":[{"name":"tokens","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"sellMyTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"tokenBalance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"}]

  Contract Creation Code Switch To Opcodes View
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

   Swarm Source:
bzzr://6c7d107dcbe6f00e6ccb3d36b76f1e1c60de2a3c015200fad50d432f2f7f92f3

 

View All
Block Age transaction Difficulty Reward
View All
Block Age UncleNumber Difficulty GasUsed Reward
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.