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0xfbce2ab94fc7c945c38adbdb964982c118f061b2038e98eb4d56686e82e477d628 days 19 mins ago0x30585a4f2323e990606a2b479585b9aa65025b43  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.00058254
0xb29e490555cd236ce91d352dcd1bc7e22b67a403198cd6dbe01496e331c1029b34 days 10 mins ago0xe1c76d0d6fe65fb01e8932a41d74f48ea24cda04  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.00045927
0xafa2dc24ca74f088f871847f6703a3f241c3433bbdb54b51d6dbb7c7b73c139134 days 36 mins ago0xe1c76d0d6fe65fb01e8932a41d74f48ea24cda04  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.0004587
0x7b0644d519687ff2c30e9c6496210869983d177ac52cd676a94881affe678c4956 days 6 hrs ago0x9ecaccb95fa45796c39537c555494833062839d2  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000053225
0x25536f8460cf6d81306df0b7a0d7a90465fcff09a3135048a1f00086f238c44b56 days 6 hrs ago0x9ecaccb95fa45796c39537c555494833062839d2  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000039227
0x34979d1770eec0a05575d46f67e6a8897930af7d2c3661d4a7794b6174d784b556 days 6 hrs ago0x9ecaccb95fa45796c39537c555494833062839d2  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000045927
0xc7052103ae307b229713e4ed706afa17bbb8a3012495846559081eff63ebb90f56 days 6 hrs ago0x9ecaccb95fa45796c39537c555494833062839d2  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000038225
0x7ef806297cb5625c6041ae098b4f0774574ec058c2288e84b570f854f48910ae70 days 5 hrs ago0xed2ea6cf87a8d853ae2fdf97eeea4d43f30a8376  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000053153
0xc424962c6ffff4dbf9ec2d9cd32fc125440adecc0e9f94f5459e2f04ff1daf9870 days 5 hrs ago0xed2ea6cf87a8d853ae2fdf97eeea4d43f30a8376  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000053153
0x47d273aea5062125b35544318517e45bf41676df2a002fee4ab7fbf1ee40006a70 days 5 hrs ago0xed2ea6cf87a8d853ae2fdf97eeea4d43f30a8376  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000038153
0xc22b5759b552cd7fbb42af6553603880b06e77c44a35b24b41a940e7c7f0667570 days 5 hrs ago0xed2ea6cf87a8d853ae2fdf97eeea4d43f30a8376  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000045927
0xc4ea533efb00dffb92c13c5948e80ce97391a62683db7af00724533baec4162970 days 6 hrs ago0xed2ea6cf87a8d853ae2fdf97eeea4d43f30a8376  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000080369
0x84413be2c94a526ca7fcaa5b942dbb4bad60b14a9d51c9dd0aa521094e43e67d70 days 6 hrs ago0xed2ea6cf87a8d853ae2fdf97eeea4d43f30a8376  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000038153
0xc61f1a4a6a520e12ce7c26039a42f479128cdc5c2f243bb74e93e51092cf0948100 days 21 hrs ago0x36db164f42fe65bd5ce3473a73d833c17624affd  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000091854
0xed1ce479740b00a22ba541d630328a35918a174b0aa2950d3bb2057f58933d15100 days 21 hrs ago0x36db164f42fe65bd5ce3473a73d833c17624affd  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000076306
0xe9ade85f58e92512634d7054a719e979418ab7eadad5bbb2443d89a94ca897b7100 days 21 hrs ago0x36db164f42fe65bd5ce3473a73d833c17624affd  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000091854
0xc5f7e5d4645aa1d03daef4cb95a1a1717f31377d26e23cdbdb27f9e74fa71310101 days 2 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000033341
0x350bb403b2ee89d35a83491bd3e8383f0fd2ba12914d9b8f02b25327f9e0dad6101 days 4 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000033341
0x3cb4518518092069a69a8c211d5403801a5489cd0076f4b67c3d20b7be02d1c4101 days 5 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000033341
0xbdfdd308bfdc3819936547e377ca412ed0b83b1343b58b42071f0537ad03e8a5101 days 5 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.00033341
0xdcd26990c0be320f78226b4cea25e37f6f062f57a673338ef979f15ad9fa4cf1101 days 5 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000033341
0x53f063a70cac6e018e5523a52e2f13a393fd7931d0099becd345043604e2db1d101 days 5 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000033341
0x80e0f7efaa0b7fb5f6d89ef95291b4c5d167651de70c9dc2359df7b8aceb63b6104 days 13 hrs ago0x48368ebbb08284f5e069f9d401c9fcf6c18075b5  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000091854
0x44b7433a6bd2d1e16d16029d749e0b60edfb3061717327537546aa66282b2c32104 days 13 hrs ago0xcaa63a18ee15854c0e722b298a82bc9958ec662e  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.001313655
0x5863776639b34aa15dcee131d63fc0edae84c92bc3b1b1fa2c1443e195233971104 days 13 hrs ago0x48368ebbb08284f5e069f9d401c9fcf6c18075b5  IN   0x3b72358e3b630f03b904380a76248a49805137d80 Ether0.000076306
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0xb29e490555cd236ce91d352dcd1bc7e22b67a403198cd6dbe01496e331c1029b562900234 days 10 mins ago0x3b72358e3b630f03b904380a76248a49805137d80xe1c76d0d6fe65fb01e8932a41d74f48ea24cda040.218276671313028653 Ether
0x34979d1770eec0a05575d46f67e6a8897930af7d2c3661d4a7794b6174d784b5550142756 days 6 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x9ecaccb95fa45796c39537c555494833062839d20.728263810099478695 Ether
0xc22b5759b552cd7fbb42af6553603880b06e77c44a35b24b41a940e7c7f06675541964070 days 5 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xed2ea6cf87a8d853ae2fdf97eeea4d43f30a83760.000475727512991205 Ether
0xc61f1a4a6a520e12ce7c26039a42f479128cdc5c2f243bb74e93e51092cf09485236582100 days 21 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x36db164f42fe65bd5ce3473a73d833c17624affd0.006030415871259642 Ether
0xe9ade85f58e92512634d7054a719e979418ab7eadad5bbb2443d89a94ca897b75236559100 days 21 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x36db164f42fe65bd5ce3473a73d833c17624affd0.000232248001574746 Ether
0x80e0f7efaa0b7fb5f6d89ef95291b4c5d167651de70c9dc2359df7b8aceb63b65215071104 days 13 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x48368ebbb08284f5e069f9d401c9fcf6c18075b50.382212643880361832 Ether
0x44b7433a6bd2d1e16d16029d749e0b60edfb3061717327537546aa66282b2c325215060104 days 13 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xcaa63a18ee15854c0e722b298a82bc9958ec662e0.257402932866972305 Ether
0xf966478c45e05f58718b4d948ece0f47db7c569dbe1ac8af0becd13617d5fe725214916104 days 13 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xb39d5218ea04fedd46f7b8519c55740a64184bca0.046626752804704291 Ether
0xef6edf92197828558c12e487d364044f6fd984153efa79f5f458b4ec4084bbf55206331106 days 41 mins ago0x3b72358e3b630f03b904380a76248a49805137d80xa0e2432c3b40c751dd4dfde119b63e8df96d55060.03590784032316499 Ether
0x75a19a0754c92fe2c12409d236d952c9628900ded5272e79bb319572cc0944675194575108 days 42 mins ago0x3b72358e3b630f03b904380a76248a49805137d80xa0e2432c3b40c751dd4dfde119b63e8df96d55060.00879421679971577 Ether
0x573249417238c5d684c83334ca2303e27045d95a8c63e81a3dc5a087a51876ab5181228110 days 6 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xa2107e70346acc65eafb427a36a08f160b92f29d1.539196959641679165 Ether
0xf9df9c7d6d35ba576148c34057dd1d6c20edcdfb39ada83a142d8c2d502debbc5171360111 days 23 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x675b10c4e4dc793b80031b8da72c1c7ee4b38de41.532078966565394322 Ether
0x4d832d01fd735a9ec2882b9a559ad9f7d80dcac9f53388f7387e757af21cfb9e5164887113 days 1 hr ago0x3b72358e3b630f03b904380a76248a49805137d80x6a115b548c12bb48081df320b8c38c9642d199380.240282452385865912 Ether
0xe86cf20892936041b80e7e35f99752e1b42260bba775c1231fd2be5803830ed25163336113 days 7 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xa0a4bcfba4580bc7ec9c6e19794aa3a304d5e80e0.16012073273270094 Ether
0x14e948a5ec1cc81dea8fccbe13668e90f29cd91f1500f1df7d7821e6495188a25163209113 days 8 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xd607009682abbe3c9965e1ee12a89e2fd63e7f290.687125897160739101 Ether
0x45ececff2d26622aa8d90e730375db63d60912fa70aa34525ca40830d7a209625163145113 days 8 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x47db36fb98accb2ddf5aee20cf2f7d11da7e95520.061505908119026709 Ether
0xbdc8cb5d1120ca6ade08402fcb1e7a8998d02335f769b43350a663bbb207c4bd5163134113 days 8 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x47db36fb98accb2ddf5aee20cf2f7d11da7e95520.000029748453882834 Ether
0x2677bf61826bc02d57c46c8286243acb34ea2224fee0c28de8813a6d80aee3ed5163117113 days 8 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x47db36fb98accb2ddf5aee20cf2f7d11da7e95520.011153048073844669 Ether
0xe63d7c8f5afe18334a3d1d4957a30c5c0d61ee25c19e7634f5f2ed1a46790dbf5162848113 days 9 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xa2107e70346acc65eafb427a36a08f160b92f29d0.110359679935268149 Ether
0xe75ea9b00f5de5fa2108b909814f1a3c06ac2f475db99dec7b341cbd876ac0a25159042114 days 1 hr ago0x3b72358e3b630f03b904380a76248a49805137d80xa0a4bcfba4580bc7ec9c6e19794aa3a304d5e80e0.000053367369962887 Ether
0xb11aa723328e55f499692f7ece42f9fa893655a59ed2c70ebb4e66eb6f8d23be5153784114 days 23 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xbb10749e514b9fb2e6e98596256b8bd45096d6620.012878801625070821 Ether
0xb96b672f7a3e8f15b8bd9a05856d34c749e8fb35ea4f48a88553f831db0f89555153549115 days 4 mins ago0x3b72358e3b630f03b904380a76248a49805137d80x2b84141d60fcd59a3b634089345643c282c0deb90.910784850643316114 Ether
0x248dd4b22c69b97b5819faea46e280879693b4922987d9ffd11744ca998117c25153224115 days 1 hr ago0x3b72358e3b630f03b904380a76248a49805137d80x26d27d0ecaff60ad696409097042006b4f05f3350.651037562321318419 Ether
0xc235c7f835966a381c8ff610990f0d09628cb22da4b90c58f4e8d988ac22aea45152778115 days 3 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80xd53252267ea2d2e3dd62cb09e9d2d3b922d487150.506054981011724146 Ether
0x791e0f3dc9a2e7df97236e5c0f4748b85854299bc574edaafd61472cfccc23315150689115 days 11 hrs ago0x3b72358e3b630f03b904380a76248a49805137d80x6f261556e402b7e1e8b464342bd6721223c2f7bb0.236646546864880428 Ether
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Contract Source Code Verified (Exact match)
Contract Name: HODLCoin
Compiler Version: v0.4.18+commit.9cf6e910
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.18;

/*
  HODLCoin. A no-bullshit, transparent, self-sustaining pyramid scheme.
 Clone of Ethpyramid original developers, Built in Safemath to stop under/overflow errors. 
 
 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 HODLCoin{

	// 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 = "HODLCoin";
	string constant public symbol = "HODL";
	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 HODLCoin() 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 LPY 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://ec94232fa941934bd373bb653787364fbc704a54038368fd774267a7d85eec16

 

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