Sponsored Link:   $30 Mn 5 star ICO - TrakInvest building crypto AI engine. Buy TRAK token now here.
Contract Overview
Balance: 0.823034442884310876 Ether
Ether Value: $494.34 (@ $600.63/ETH)
Transactions: 371 txns
Token Contract: EthPyramid (EPY)
 Latest 25 txns from a total Of 371 transactions
View All

TxHash Age From To Value [TxFee]
0x68701a646ae44406cc2921e194ed22f83025d8c674d68f882420aab86970408e1 hr 36 mins ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.00062555
0x6f482f2de5d294fad120e14e0ad1eb6257f312208a736b65ed01395476ac41ef6 days 2 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000275562
0xc5c45b9bb40802d529d539421066bcc80faca5ee1a2341764399887711a555b615 days 15 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.015 Ether0.000295905
0xd87e30b1a379a2b769dc51dfedcec0da84b77ee630d1a0450c09c959e178844e15 days 23 hrs ago0x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd42  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000229635
0x4bb807d6a89320651441b3b6ba5cd5be9d0df1a3f3d8e01aaf0f1c6231d1e15a16 days 18 mins ago0x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd42  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000190765
0x445d5b3134ea789145e5cf13205392ab38cac36a6a4342414cbab086359ad87a17 days 18 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.02 Ether0.000177543
0xfe4d1f394b5a9db4375589da6e62095e01ff003d0807551d827790a98ce3d6b717 days 22 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.01 Ether0.000236724
0xa6be6431812781c386ea5f015ca2b5a9aeabb9f5a3c2ed07e16f26cfb923ad8f17 days 23 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.01 Ether0.000177543
0x1345be12f4a822fa0056794878e51a63b2fbeb7f005cc32a5448c96eca02bc7c18 days 1 hr ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.015 Ether0.000118362
0x6e47e2e58b2b1299186ce6992a6915fc5a2ecabf4c7adf7b0c5d6297b33c811418 days 3 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.03 Ether0.000118362
0xb40eeccada4ca4aa192ac75e6af8103ccd92aa36b05b045f8ca46d821b0c596718 days 4 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.015 Ether0.000118362
0x92ab3447b1cec4515845047075d043ae44e02b314544aa7505a31e64ed87835619 days 4 hrs ago0x361084af8d45e07885b31fcedcb642b9cc7b72d7  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0.02639 Ether0.000177543
0xde4676aefe2490258e5160aaae14ba4b99fb268910e88061ec67817e4eb0eccb21 days 2 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000078454
0x554c32c4f9b99223abc9321dc21eb7e54ced76f69b247c202f7ea537ae0109a021 days 2 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000091854
0xfeb2d22082f2214c8ae5e4357993e45c29ba87b870e9b0ae44db3ace105ce82a22 days 19 hrs ago0x341c48c0e833e179cca6c605b823e9a4911a3d00  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000137781
0xdcc079ad04200d125548ad2b16e040bc099d3390bf5362b778665d7babda55e723 days 15 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.00008037225
0x79a0b2241b0a0c68e0df8bca5153c9ffdc26414480131f8e4e9584db2a4d633023 days 23 hrs ago0x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd42  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000183708
0x8f1ddb5d6cba1dbee08dfd12f736abf0e7d7e8b742b6376b9015f993a41804bb24 days 9 hrs ago0xaec539a116fa75e8bdcf016d3c146a25bc1af93b  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000187665
0xa39ed79556e1133eabcfbde0f1272f9ec4d4248980e07bab9a15868fa6751e3527 days 20 hrs ago0x66c25415ff086244b2c9119c4a15d7e150bd4248  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.00009231327
0xa489e067ab6fc2f732ed9f4461e609540a89ec52af6c1aa88e24bd1ee3fbd4dc31 days 22 hrs ago0x415e94a5246ac4d3f16a833f51ff9066f215a421  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.00004684554
0x39b2725ba538307485ada40ec3c250b6ef6348ce3d63fcc2392cedd5a84276f732 days 2 hrs ago0xaec539a116fa75e8bdcf016d3c146a25bc1af93b  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000091854
0x83ac1df1c72b85a5fe44579c5086b71e12c17e15f4822f552b21cf8c104c44ec32 days 3 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000137781
0x6c2871e1ec67255ea382dea1dc656d1e922683798b03d2f7bfd020f39b0ee71232 days 5 hrs ago0xab8c5c034f1cd123c62413a88ef3ada2d90f68c5  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.00012511
0x39d29ce780ecbe40890216ee8ef44aa35aa68618809b1afca3d6a55849ea5a2c33 days 4 hrs ago0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000045927
0xad9a973dd5e868010710bd8db2370bfd03ee8a470e89bfc3956b38f4a7e7030334 days 9 hrs ago0x32d9270f08c5a67f6cb3aef94031102ee8fc413b  IN   0xe0af40d534685f46718d07cdee8f2d78af9916dd0 Ether0.000062555
[ 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
0x68701a646ae44406cc2921e194ed22f83025d8c674d68f882420aab86970408e56795011 hr 36 mins ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x341c48c0e833e179cca6c605b823e9a4911a3d000.022583218218106844 Ether
0x6f482f2de5d294fad120e14e0ad1eb6257f312208a736b65ed01395476ac41ef56455806 days 2 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.0077788391005333 Ether
0xd87e30b1a379a2b769dc51dfedcec0da84b77ee630d1a0450c09c959e178844e558919315 days 23 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd420.020333738476862521 Ether
0x554c32c4f9b99223abc9321dc21eb7e54ced76f69b247c202f7ea537ae0109a0555986421 days 2 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.010448422473394203 Ether
0xfeb2d22082f2214c8ae5e4357993e45c29ba87b870e9b0ae44db3ace105ce82a554998922 days 19 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x341c48c0e833e179cca6c605b823e9a4911a3d000.00352609160716789 Ether
0xdcc079ad04200d125548ad2b16e040bc099d3390bf5362b778665d7babda55e7554549123 days 15 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x415e94a5246ac4d3f16a833f51ff9066f215a4210.000565336378508918 Ether
0x79a0b2241b0a0c68e0df8bca5153c9ffdc26414480131f8e4e9584db2a4d6330554353123 days 23 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3052e2dbf3c84cf0b9693ebe6a7ef1b11b93cd420.001327826079278507 Ether
0x8f1ddb5d6cba1dbee08dfd12f736abf0e7d7e8b742b6376b9015f993a41804bb554102124 days 9 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0xaec539a116fa75e8bdcf016d3c146a25bc1af93b0.184662210563975216 Ether
0xa39ed79556e1133eabcfbde0f1272f9ec4d4248980e07bab9a15868fa6751e35552136927 days 20 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x66c25415ff086244b2c9119c4a15d7e150bd42480.000242434277298154 Ether
0xa489e067ab6fc2f732ed9f4461e609540a89ec52af6c1aa88e24bd1ee3fbd4dc549778831 days 22 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x415e94a5246ac4d3f16a833f51ff9066f215a4210.001128389482328668 Ether
0x39b2725ba538307485ada40ec3c250b6ef6348ce3d63fcc2392cedd5a84276f7549664932 days 2 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0xaec539a116fa75e8bdcf016d3c146a25bc1af93b0.008781067237484431 Ether
0x83ac1df1c72b85a5fe44579c5086b71e12c17e15f4822f552b21cf8c104c44ec549642432 days 3 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.010316976253715819 Ether
0x6c2871e1ec67255ea382dea1dc656d1e922683798b03d2f7bfd020f39b0ee712549606432 days 5 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.22583791686325154 Ether
0x39d29ce780ecbe40890216ee8ef44aa35aa68618809b1afca3d6a55849ea5a2c549046433 days 4 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3e9f41ac3068bbb232dc422ec9d2857866b24c3d0.009494436171821658 Ether
0xad9a973dd5e868010710bd8db2370bfd03ee8a470e89bfc3956b38f4a7e70303548331434 days 9 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x32d9270f08c5a67f6cb3aef94031102ee8fc413b0.019762487164833192 Ether
0x0327dc4b45534c029527abbbc4e4bd25e576e07fa6b351d965a9d382df9dbdc8541540945 days 23 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x9a0cf297c8143d8e08296f5257ba81081b1a2e5b0.027135451669121702 Ether
0x1eef77919f7bfb0dbcec1e16b315e66333ce0cd2a6b2aed91d8cf394b3e284e3541540145 days 23 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x9a0cf297c8143d8e08296f5257ba81081b1a2e5b0.001384368711307819 Ether
0x4c0202e5a89044dbdb7813b3d1d2ffebe2ca921d67dd1793d3dd37074695159a539972548 days 13 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0xab8c5c034f1cd123c62413a88ef3ada2d90f68c50.017900647402092965 Ether
0xd4b5168bca48f5c2d3616ffc34e10d87f7f7f775c41e65e9ddad93a579062af7538804350 days 11 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0xbe551345db7534d37c7f446d2391fb71022221510.057993621719768797 Ether
0xce1d1152eba9bc8cebb4cc22cdd8e69d4d5c84833f9aaddd1cd970888f42cd35535088656 days 15 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x9afda2dd29775559f42833302feb357b0cf33f970.016639366470804612 Ether
0x2d3fcb49e216872eb2c5f713e49ba8b3cfb0b9d9365d300bbbc0c816b9ff5425529101466 days 16 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x341c48c0e833e179cca6c605b823e9a4911a3d000.004079763204338192 Ether
0xe6b014e13c0b625f957860053e4d7301b9314ae470db86b01bf1e10bb9aa13b6525701472 days 10 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0xf2898375a42deda8a52147ae7bbf58d6c84c3b760.002824488925566878 Ether
0xc5c5dba00fa2cd72408eb953bb7d77e55dbb2699f0bbcf822b786ccceb034a41524782773 days 23 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x415e94a5246ac4d3f16a833f51ff9066f215a4210.000760087994297154 Ether
0x3e23f299a6956ea1916ee8442280b7596c97d7e2bc38d40fbc50e056cab41f6c523832775 days 14 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x1948e57b65d8dd00043e34c9e52048250f6f5df60.000505857891910089 Ether
0x809c71a9d86a440e2594bd453fcf1b92089d775779e421e3866c054575af18e2523270176 days 13 hrs ago0xe0af40d534685f46718d07cdee8f2d78af9916dd0x3b4f5a310acc2df9c47025ec9f15acec6e42ff630.03773619145424397 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.