Sponsored:   [Largest VC Funded] TEMCO, millions sold out in seconds. Join TEMCO's last presale at CoinBene!
Contract Overview
Balance: 0.806862824896489484 Ether
Ether Value: $68.01 (@ $84.29/ETH)
Transactions: 83 txns
Token Tracker: EthPyramid (EPY)
Misc:
Address Watch: Add To Watch List
Contract Creator: 0x5db1c3bf9d068a284a8455ce7649870f6ca12584at txn 0x8c49ad54ebc4ab1cd752e57cec36775a67a990f2a71b69f46ea1aba87c84453f
Token Balance:
 Latest 25 transactions from a total of 83 transactions

TxHash Age From To Value [TxFee]
0xdc5f3ad720077449a17d14710544019d82caaa4309bfcad412f3913b36622b40140 days 6 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.000062555
0xcc98574ddeeface5f71d4d34580f931b7426b28f9e97b0215158e138348c51ea159 days 6 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00062555
0xd647ee5ca2ec2a2b0008c49af7aa3f79c56c73f99ae7787e88d0c7c79c245349190 days 15 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00075066
0x6b5df893c29b6d6fd6b7b6e1133e527a682b2ee7d0220e9ecc5373e2c93251aa193 days 23 hrs ago0x263b604509d6a825719859ee458b2d91fb7d330d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00037533
0xd388917975a1d65af091abe7bcc6b5bc35ae20e89e5447e444009934282074c6198 days 9 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.1 Ether0.00148362
0x24e736a3ff0f86619f47164dded5745f5df06f4fe70c4fcdb51cd4e27482e77b199 days 4 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.000779405
0x781f856a1e608fa1999f3cfc3c954d4581197a39b1990753b3e9f66e19e72e2b199 days 4 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00062555
0xc75a83adc6601ededc5bb06d9d20d839b77783d18674d1de39c37f25f41d6db6202 days 6 hrs ago0x391a3ea52c4a9f04be6900c3fd057dd9676c72e1  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00025022
0xcdeb11d3ec3c11c76c6e2ba07b8df4fa900050aeb72fc354a5048c2f83d33c9a202 days 14 hrs ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00062555
0x31fad253861ed6d4f61a4291ccad43bc54a619d3ed1612331dbbfde63bedfb7d208 days 15 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.000275562
0x79d1afe8495080723e16e85bb7507c02c0fc338dd9bf82fb2e9aa6fe19efe14b220 days 11 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.0048 Ether0.000236436
0xdae3ed6a8a63b2caa7740659769b1818c3033b50ba1bd656838c53a30f06264b225 days 7 hrs ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.000137781
0x9d294baaee63cf602508723871fef2afd0d53c5d43269ef4da81289739f73df7232 days 5 hrs ago0xb9cc1875eec851548cb7eca33ecc643fce9d44e3  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.000187665
0x35246434db129338f0a34993d8e2a908b2b57779a1fe5c2bc33e36cc9e59ac1f233 days 2 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.0000505197
0xd3e8518faab23bf08a6130e2291868133ad9617878107b93f845b08eac91383f234 days 15 hrs ago0xab8c5c034f1cd123c62413a88ef3ada2d90f68c5  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.00012511
0x8d0536c5dc0575e10072df0b9ab2c4aeb803dcff795855f0fca9fc74e3503f65234 days 20 hrs ago0xb9cc1875eec851548cb7eca33ecc643fce9d44e3  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.0000229635
0xe096e666df59c8e5f07476773834ac387ac6e5078e160a0257a0d900644af9d9235 days 2 hrs ago0x8da4f82dc4d03c5421bb2087f858750c650d8571  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550 Ether0.000187665
0xe990c89c7f7079cc1d63a750748f1392278b6218444e6247d7170fe3bc2842f1236 days 7 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.2 Ether0.000059109
0x296c2da30dc0f629a7ac32f32f057d7f7a3c458b06b442830cf3bbdd1382331e238 days 23 hrs ago0xfaeeb28890c14f45e68a62e2e29b1b1e8d41c950  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.2 Ether0.000089109
0x105f481ceba0f897e1fe1498bdcb724b3e79124f85803bb6e893a227c36a5919239 days 2 hrs ago0xb9cc1875eec851548cb7eca33ecc643fce9d44e3  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.05 Ether0.000178362
0x26583bc08f3047de56b9e5450d36defa136c98f132fdae7dc63a6c90158e3fbc241 days 3 hrs ago0x8da4f82dc4d03c5421bb2087f858750c650d8571  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.1 Ether0.0000980991
0x7300d133912efce3773f3625295557a3f7751e412ec0235c2488c4bf20cf22f2241 days 3 hrs ago0x263b604509d6a825719859ee458b2d91fb7d330d  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.05 Ether0.000089181
0xb29c1beba4a4f45b86c3164d70f5af3ae8245ccc3933ce04609ea3e784a38f4a245 days 17 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.002 Ether0.000059181
0x3448713aa6b93c6cb7e41098b5a495e80b3c238e5f4323789c827c94a8678f9c247 days 14 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.0026 Ether0.00001479525
0xab3613fed2b8e43c8c265d820819f4fbf42bf32ed49fa28c9a65e57373baf380250 days 16 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550.0026 Ether0.0000178362
[ 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
0xdc5f3ad720077449a17d14710544019d82caaa4309bfcad412f3913b36622b406040675140 days 6 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.077971276692965948 Ether
0xcc98574ddeeface5f71d4d34580f931b7426b28f9e97b0215158e138348c51ea5928822159 days 6 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x415e94a5246ac4d3f16a833f51ff9066f215a4210.005465701541882754 Ether
0xd647ee5ca2ec2a2b0008c49af7aa3f79c56c73f99ae7787e88d0c7c79c2453495746992190 days 15 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x361084af8d45e07885b31fcedcb642b9cc7b72d70.008381759538487083 Ether
0x6b5df893c29b6d6fd6b7b6e1133e527a682b2ee7d0220e9ecc5373e2c93251aa5728231193 days 23 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x263b604509d6a825719859ee458b2d91fb7d330d0.047406544101126131 Ether
0x781f856a1e608fa1999f3cfc3c954d4581197a39b1990753b3e9f66e19e72e2b5699010199 days 4 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.236271373599811789 Ether
0xc75a83adc6601ededc5bb06d9d20d839b77783d18674d1de39c37f25f41d6db65681521202 days 6 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x391a3ea52c4a9f04be6900c3fd057dd9676c72e10.011818793412536811 Ether
0xcdeb11d3ec3c11c76c6e2ba07b8df4fa900050aeb72fc354a5048c2f83d33c9a5679507202 days 14 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x341c48c0e833e179cca6c605b823e9a4911a3d000.029800020391035001 Ether
0x31fad253861ed6d4f61a4291ccad43bc54a619d3ed1612331dbbfde63bedfb7d5645577208 days 15 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.008496337818077217 Ether
0xdae3ed6a8a63b2caa7740659769b1818c3033b50ba1bd656838c53a30f06264b5550394225 days 7 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x341c48c0e833e179cca6c605b823e9a4911a3d000.002377949922735857 Ether
0x9d294baaee63cf602508723871fef2afd0d53c5d43269ef4da81289739f73df75510859232 days 5 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550xb9cc1875eec851548cb7eca33ecc643fce9d44e30.046264706845346657 Ether
0x35246434db129338f0a34993d8e2a908b2b57779a1fe5c2bc33e36cc9e59ac1f5505689233 days 2 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x415e94a5246ac4d3f16a833f51ff9066f215a4210.000352611865556763 Ether
0xd3e8518faab23bf08a6130e2291868133ad9617878107b93f845b08eac91383f5496777234 days 15 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.022681576631992403 Ether
0x8d0536c5dc0575e10072df0b9ab2c4aeb803dcff795855f0fca9fc74e3503f655495632234 days 20 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550xb9cc1875eec851548cb7eca33ecc643fce9d44e30.001475464293990405 Ether
0xe096e666df59c8e5f07476773834ac387ac6e5078e160a0257a0d900644af9d95494081235 days 2 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x8da4f82dc4d03c5421bb2087f858750c650d85710.105284540180061704 Ether
0x5b5057e18beb0d2b98fafbcef79045fdf603afc720ee8501246ed15cacd5c20d5350987259 days 4 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x9afda2dd29775559f42833302feb357b0cf33f970.016218967430101246 Ether
0xc5782f65f5dc563eb80a49742edce9cc7d03c47bc7edfd7644a5a420b930f6e75194864285 days 12 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550xd88a02c8f433d689e5cf8ff0737e2c2efdc65fef0.026893047870304583 Ether
0x310ff512a5817c4fca72e52fcf47e265aeeb76fe723b4c38c67a96a1e56890065072122306 days 7 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x415e94a5246ac4d3f16a833f51ff9066f215a4210.00015787910872709 Ether
0xb73cffaa8e9382ca88c21ea9c95fcfaa089d776fdbc6d201c89f05c573fa75615069315306 days 19 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x5e79ec5eb679cea45be3392381f4637fe1eb6e620.000202502839529632 Ether
0x3df897eea2033bdaeaabda250a4d0b01f3e622e8bed97c6fb87c18aebac223515068624306 days 22 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x5e79ec5eb679cea45be3392381f4637fe1eb6e620.0008100454015472 Ether
0x82dd9770ddb9914199f06305d2c419d7e42673cc7407c4a011fb8033d033267e5044646310 days 22 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x959b9d1fb6954e66c64a64a824d681e1282f56ee0.073351935704023375 Ether
0x4fbdc8ecf20930b304c129d96076bf303d09f579271225ad332e5a9f7983188e5043419311 days 3 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x9cbc32c1ceb5d7e7ab2938a1797b6019900c08bd0.003427945794525804 Ether
0xffa1f6e7597acba613ce99714709696c9c0a736fa76a07095a9929dd12e98e7b5038262312 days 20 mins ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550xd88a02c8f433d689e5cf8ff0737e2c2efdc65fef0.000070502755513929 Ether
0x9bd5245dca6e3314d06453663529cd3d5cf68975bf5a32f12802580d9461a6525034728312 days 14 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x9455a90cbf43d331dd76a2d07192431370f643840.001497077601653929 Ether
0x083a1c38f9aa3a71f9410e7b1875878a1f1ad3df450b255a02c9065da49c2bea5031659313 days 2 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x959b9d1fb6954e66c64a64a824d681e1282f56ee0.01673904021506337 Ether
0x91b41728fe30d9b6e1b8e8ac92177691307aac532d7e1af6a4f50c5a04c8ea3c5031483313 days 3 hrs ago0x1ab8c9fc5f3b9ec59216777cc4514ab2a0a96d550x4dbd161ab0455505b0f80e27b4be96302ccfd54b0.052705561444986673 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 GasUsed 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.