Sponsored Link:   Alt.Estate - ERC20 for Real Estate. Live Prototype in Japan, USA, EU.Buy ALT tokens. Endorsed by partners of PWC, Knight Frank.
Contract Overview
Balance: 0.465127691653115788 Ether
Ether Value: $279.37 (@ $600.63/ETH)
Transactions: 207 txns
Token Contract: EthPyramid (EPY)
 Latest 25 txns from a total Of 207 transactions
View All

TxHash Age From To Value [TxFee]
0xe91e27c33572659e7e7bde4d633c91223aad8b722a0c40ea836727f527ddcac31 hr 43 mins ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.00062627
0x8cc81ec101cda288ba6787ba8a78ce400c286b73a04b63ea9a0f5ac525d1f91e19 hrs 38 mins ago0x123085670e817602041e58febb243abe01a9a825  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000688897
0x4313f8066091fd2f18219867e373432c853c224428d3911baf02c0e9ca0a67ae1 day 21 hrs ago0x3d2084d65cd56583aaf306e38db432a399b34b63  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.00075066
0x8bc64d9e31f99d51ca5959e9681c18868809fbd8b04f231ba52671267b75554f18 days 20 hrs ago0x391a3ea52c4a9f04be6900c3fd057dd9676c72e1  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000091854
0xbeb5208f36c76a34efd8b54cbc6c14f209343b67eca2a63d5348f714fd608ec719 days 4 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.001319 Ether0.000177543
0x3d76efda33d9520d53346c0aca0497840e2f413db1adcb32eda99f93b694e9a022 days 18 hrs ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000137781
0x016c55dae64d0505b44657849e0f0edd0a9f2fca11363141995adcb06c1173bd23 days 19 hrs ago0x123085670e817602041e58febb243abe01a9a825  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.08 Ether0.000267543
0x753b7c62ebd6536393711c29dbc9ce01b671559e51e68cd44b4085cdb525d36025 days 14 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000137781
0x6296bece5300b26792802acf4b3087dcfcd4975629335cb83d8c93b083061f7d26 days 13 hrs ago0x66c25415ff086244b2c9119c4a15d7e150bd4248  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.0001010394
0xbd90d1c87249202510bf2e3006d8d74a858326b2ce3ac3727defe9c7abb0178628 days 12 hrs ago0x3d2084d65cd56583aaf306e38db432a399b34b63  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000091854
0x9550e528b338115c04db838039e97ca22a0d46c320194cfb5f206ee3dd963b6830 days 37 mins ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.02773 Ether0.000177543
0x79da3100e6bacda2d6290e6a05c1c018cb9ab3333b40166e6e5fca537fe19a5430 days 7 hrs ago0x92095a3c57843bbe1582b0a269fe6f6d5ad51425  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000065441
0x2e3c0c53dad12888706df4748290d50e422a22bfb156ea3d0e068a4d4d42081330 days 7 hrs ago0xaec539a116fa75e8bdcf016d3c146a25bc1af93b  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000062555
0x151d348f63b284c3b1a5a4632d834a080c5276cdd70b1cc24fc7269143d9987430 days 15 hrs ago0x9ad03d0307d22bfbe2a057839121e53049804eeb  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.02 Ether0.000178362
0xa1a7482b7bec1bf294b5dd61dbe94798e11c3110407879c8f515aa4e65f03cb630 days 16 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.1 Ether0.000118362
0xe1de4c2e06a668a57cfd1e263b380d65006dbd7366147aaa717a2ff9cb5d2eab31 days 12 hrs ago0x6ec751f86e3adff24db54822dd70fa4f5f763fc7  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000065513
0x6729e2d17aa9aba36743425e425db48faacd3f91ca558b0e9c4ff788c7eccc5d31 days 16 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000045927
0x74c2e56a01bd82b2e29fddd78d4df74330de17c220260c9a01d1dd280510f02631 days 20 hrs ago0x1f2672e17fd7ec4b52b7f40d41ec5c477fe85c0c  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.005 Ether0.000222759
0x953b01cf936e1f68b3eff13f6c8c247fdd230c69739dca1f39fdbcf5efd1047d31 days 23 hrs ago0x6ec751f86e3adff24db54822dd70fa4f5f763fc7  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.001 Ether0.000118506
0xe76d8d7dca477d93ed4b41dc045ffa8ac9569b8286753683811b600dcb82bc8132 days 3 hrs ago0xfaeeb28890c14f45e68a62e2e29b1b1e8d41c950  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.1 Ether0.000177759
0xac067c7eca5638d7d52533761aee222d496d9b7ce25e104e279259f015a6132532 days 4 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.0038 Ether0.000118506
0x76a483e314796d774e3c42b9b064c726cc7de20ac46a0586f4c86bdbf94773f732 days 4 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.007501 Ether0.000118506
0x289047910f0e3b5f1f30bd20d71091eedbb8d471504e8728bdde672a43a7fba632 days 4 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000137781
0x7882fd9367dc693cf2f1523d558afbb9f1dbeea4fa110601ba1fde65c78898e832 days 5 hrs ago0xab8c5c034f1cd123c62413a88ef3ada2d90f68c5  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650 Ether0.000062627
0x164653dd2a82db730911fa1e1bf97787c0afa98c778fbd59e649eaa298391cb132 days 10 hrs ago0xfaeeb28890c14f45e68a62e2e29b1b1e8d41c950  IN   0x5ac108d7b48979f261cf57ed7f9df95f8cb568650.1 Ether0.000059181
[ 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
0xe91e27c33572659e7e7bde4d633c91223aad8b722a0c40ea836727f527ddcac356794781 hr 43 mins ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x341c48c0e833e179cca6c605b823e9a4911a3d000.042486302094019319 Ether
0x8cc81ec101cda288ba6787ba8a78ce400c286b73a04b63ea9a0f5ac525d1f91e567524219 hrs 38 mins ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x123085670e817602041e58febb243abe01a9a8250.060198184327028337 Ether
0x4313f8066091fd2f18219867e373432c853c224428d3911baf02c0e9ca0a67ae56691571 day 21 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x3d2084d65cd56583aaf306e38db432a399b34b630.079447622420322226 Ether
0x8bc64d9e31f99d51ca5959e9681c18868809fbd8b04f231ba52671267b75554f557284418 days 20 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x391a3ea52c4a9f04be6900c3fd057dd9676c72e10.005735841137722288 Ether
0x3d76efda33d9520d53346c0aca0497840e2f413db1adcb32eda99f93b694e9a0555034522 days 18 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x341c48c0e833e179cca6c605b823e9a4911a3d000.013535633638458931 Ether
0x753b7c62ebd6536393711c29dbc9ce01b671559e51e68cd44b4085cdb525d360553420025 days 14 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.008941330833918308 Ether
0x6296bece5300b26792802acf4b3087dcfcd4975629335cb83d8c93b083061f7d552881026 days 13 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x66c25415ff086244b2c9119c4a15d7e150bd42480.001109455360528283 Ether
0xbd90d1c87249202510bf2e3006d8d74a858326b2ce3ac3727defe9c7abb01786551745228 days 12 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x3d2084d65cd56583aaf306e38db432a399b34b630.021296823394619151 Ether
0x2e3c0c53dad12888706df4748290d50e422a22bfb156ea3d0e068a4d4d420813550710530 days 7 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xaec539a116fa75e8bdcf016d3c146a25bc1af93b0.065424547112711446 Ether
0x6729e2d17aa9aba36743425e425db48faacd3f91ca558b0e9c4ff788c7eccc5d549902431 days 16 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x415e94a5246ac4d3f16a833f51ff9066f215a4210.001164518328892446 Ether
0x289047910f0e3b5f1f30bd20d71091eedbb8d471504e8728bdde672a43a7fba6549622732 days 4 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.018888865722452299 Ether
0x7882fd9367dc693cf2f1523d558afbb9f1dbeea4fa110601ba1fde65c78898e8549597832 days 5 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.288106030861345872 Ether
0x1e0d5bb1fe540675ba7af625b5972a041048c691a7b1b0ef841412cb171c9b04549385532 days 14 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.015071848129032459 Ether
0x405e75e792f80fcebde29b7504688fcede5f8dd88655fad417a95098ad567f46549363032 days 15 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xa820a8182801e98e1332230f5f347809ede871bc0.414135259790152712 Ether
0x342618bdb8436c2569e34c497ba7d1e2f4b0ef00758ea328c0b0c63dd48a945a547938435 days 1 hr ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.012253141477377262 Ether
0xb94822652b1c282aa801eb0675e12cd00b5d64ea1dab3631866d48f3a468a8d5546377937 days 18 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x66c25415ff086244b2c9119c4a15d7e150bd42480.0009040450409074 Ether
0x0e08733d49d18d98983e7280e7f3411f97818800f4d4064bbe7eebb6446efddd545313539 days 14 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.021127535157642174 Ether
0x16ef17bdeb96f617de1dfebdd33c07b4caf971ff4e2751891c3486337bc2fced543241343 days 2 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x3e0b2a332c8c252eadbc039d27e3a53e89e85b230.016745767162288688 Ether
0x8abcf142ff5a12ca6e9d789b1713dc2d17ad42d1e5f4784d84f195bde74011de541911445 days 8 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x8926ff3b2239d813fd7f112982320dfe23cbb7b00.025041103052802031 Ether
0xff50232ae40d611c1b753a6b020e3db923b7bf62b8721078ba3cf7abde0f02be540485147 days 17 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x415e94a5246ac4d3f16a833f51ff9066f215a4210.000358825093592661 Ether
0x8c92af2e5dd438ba565e9b1bc4d292438a646c921888d7022caf5e82badd2e62539974048 days 13 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.010022667824240482 Ether
0xbcc10448224d8295c2abefc6d364d5259d9005928977225c79c6b8b50a2a3d3f535003956 days 19 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x9afda2dd29775559f42833302feb357b0cf33f970.016231012171245899 Ether
0xc10104dc9f83c7a254e18f67d79cb31246568db87ea76fe23ba2c91d3b3fb649519487082 days 23 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xd88a02c8f433d689e5cf8ff0737e2c2efdc65fef0.011079484269587415 Ether
0xae010d5edba208718f2b5642a0067047b229f629eedbed21753b98566f0b4bf3518965683 days 20 hrs ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650x391a3ea52c4a9f04be6900c3fd057dd9676c72e10.004787311823075811 Ether
0x6fd09dc11f523fbc2c80bb1490a1c8f37681991efdc94d3b10b0b30fe5a5fd93516497788 days 1 hr ago0x5ac108d7b48979f261cf57ed7f9df95f8cb568650xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.00245061609146689 Ether
[ Download CSV Export  ] 
Contract Source Code Verified (Similar match)
Note: Displaying similar matching verified source code at contract 0xc908a34165d2720d12ffcfb6b99b47161b1c9946(excluding Constructor Arguments if any)
Contract Name: EthPyramid
Compiler Version: 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 txn Difficulty GasUsed Reward
View All
Block Age UncleNumber Difficulty GasUsed Reward
Make sure to use the "downvote" button for any spammy posts, and the "upvote" for interesting conversations.