Contract 0x1d77340D3819007BbfD7fdD37C22BD3b5c311350 2

 
 
Txn Hash
Method
Block
From
To
Value
0x0b551d8bbecaa1f9a900b8ef6e7bbe868b3536db6afad11d18780cf0e20f4de5Withdraw34243562017-03-26 22:08:051971 days 1 hr ago0x04528fb91840ce4bcfc7390919a455d530da8ecb IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500 Ether0.‍0007930220
0xcd310ca353c7bf22efd2b323b4acea93c0ca7d9c8416e1a26436d273346f5b05Announce34181002017-03-25 21:01:011972 days 2 hrs ago0x04528fb91840ce4bcfc7390919a455d530da8ecb IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500 Ether0.‍000695420
0xd760c364994ac78d06936521117e0027b6418a7a1c438c31d143e50c44593ed2Play34180982017-03-25 21:00:301972 days 2 hrs ago0x04528fb91840ce4bcfc7390919a455d530da8ecb IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500.‍1 Ether0.‍0026317220
0xfa28dbef46699e5263aa1e59d213f61074e9f01786872ed702fb84069c7f82b6Play33909202017-03-21 7:33:001976 days 15 hrs ago0x6c87ad01c7771243ee35fa87b13f0a9890d8d3b7 IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500.‍1 Ether0.‍0019186220
0x4b01e5a55f1763d1a1725b491e7e5dfd4566b90f006b730a88920d21d2b87e10Withdraw27434682016-12-04 1:48:012083 days 21 hrs ago0xa69c7e93f7b073cdae328a57eff059b130e75fd4 IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500 Ether0.‍0013585525.‍68398838
0xd82dd7712ef80dfec1acf6fa9676acaf7139bcd4b5651720b1c0327edca82bf0Announce27434632016-12-04 1:45:282083 days 21 hrs ago0xa69c7e93f7b073cdae328a57eff059b130e75fd4 IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500 Ether0.‍0008930325.‍68398838
0x5e00c4380cf2f30ce8eb50532c6d6efa561be8544d88a83df042690e2d7c4062Play27434452016-12-04 1:41:092083 days 21 hrs ago0xa69c7e93f7b073cdae328a57eff059b130e75fd4 IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500.‍1 Ether0.‍0033796525.‍68398838
0x9ff17cb5edc57aebf2c128301af7985e7d7ff0f073cc82d2060cadb6e153a44dAnnounce26419522016-11-17 6:10:022100 days 17 hrs ago0x9c34e4bc5f2928a96b271f0c06bf1da001beeafb IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500 Ether0.‍001734550
0xfb09a97a16bd0c0aa34f2d79048bb784e192e541d2ee359a3bbf7252e30796dePlay26419232016-11-17 6:04:312100 days 17 hrs ago0x9c34e4bc5f2928a96b271f0c06bf1da001beeafb IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500.‍1 Ether0.‍0062925550
0x971ef327ee442c0aaeb14b713b4aa56540c56745abf7f9e32900e907606ba473Owner Announce23501692016-09-29 19:16:452149 days 4 hrs ago0xa69c7e93f7b073cdae328a57eff059b130e75fd4 IN  0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500 Ether0.‍0011459125.‍68398838
0x474c4d206cb4edfc0a35c135245795b38566317435477a320173b22d28f6cfe00x6060604023500882016-09-29 19:00:342149 days 4 hrs ago0xa69c7e93f7b073cdae328a57eff059b130e75fd4 IN  Create: RockPaperScissors0 Ether0.‍0352236325.‍68398838
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Latest 4 internal transactions
Parent Txn Hash Block From To Value
0x0b551d8bbecaa1f9a900b8ef6e7bbe868b3536db6afad11d18780cf0e20f4de534243562017-03-26 22:08:051971 days 1 hr ago 0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500xa69c7e93f7b073cdae328a57eff059b130e75fd40.‍002 Ether
0x0b551d8bbecaa1f9a900b8ef6e7bbe868b3536db6afad11d18780cf0e20f4de534243562017-03-26 22:08:051971 days 1 hr ago 0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500x04528fb91840ce4bcfc7390919a455d530da8ecb0.‍198 Ether
0x4b01e5a55f1763d1a1725b491e7e5dfd4566b90f006b730a88920d21d2b87e1027434682016-12-04 1:48:012083 days 21 hrs ago 0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500xa69c7e93f7b073cdae328a57eff059b130e75fd40.‍002 Ether
0x4b01e5a55f1763d1a1725b491e7e5dfd4566b90f006b730a88920d21d2b87e1027434682016-12-04 1:48:012083 days 21 hrs ago 0x1d77340d3819007bbfd7fdd37c22bd3b5c3113500xa69c7e93f7b073cdae328a57eff059b130e75fd40.‍198 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
RockPaperScissors

Compiler Version
v0.3.6+commit.3fc68da

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2016-09-30
*/

contract RockPaperScissors {
  /*
    Brief introduction:
    the game is about to submit your pick (R/P/S) with fee to the blockchain,
    join players into pairs and withdraw 2x the fee, or just 1x the fee in case of draw.
    if there will be no other player in "LimitOfMinutes" minutes you can refund your fee.

    The whole thing is made by picking a random value called SECRET_RAND, where (SECRET_RAND % 3) gives 0,1 or 2 for Rock,Paper or Scissors,
    then taking a hash of SECRET_RAND and submitting it as your ticket.
    At this moment player waits for opponent. If there is no opponent in "LimitOfMinutes", player can refund or wait more.
    When both players sended their hashes then they have "LimitOfMinutes" minutes to announce their SECRET_RAND.
    As soon as both players provided their SECRET_RAND the withdraw is possible.
    If opponent will not announce his SECRET_RAND in LimitOfMinutes then the players bet is treated as a winning one.
    In any case (win, draw, refund) you should use Withdraw() function to pay out.

    There is fee of 1% for contract owner, charged while player withdraws.
    There is no fee for contract owner in case of refund.
   */

  /*
  JSON Interface:

[{"constant":true,"inputs":[],"name":"Announcement","outputs":[{"name":"","type":"string"}],"type":"function"},{"constant":false,"inputs":[{"name":"HASH","type":"bytes32"}],"name":"play","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"MySecretRand","type":"bytes32"}],"name":"announce","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"MyHash","type":"bytes32"}],"name":"IsPayoutReady__InfoFunction","outputs":[{"name":"Info","type":"string"}],"type":"function"},{"constant":true,"inputs":[{"name":"RockPaperOrScissors","type":"uint8"},{"name":"WriteHereSomeUniqeRandomStuff","type":"string"}],"name":"CreateHash","outputs":[{"name":"SendThisHashToStart","type":"bytes32"},{"name":"YourSecretRandKey","type":"bytes32"},{"name":"Info","type":"string"}],"type":"function"},{"constant":true,"inputs":[{"name":"SecretRand","type":"bytes32"}],"name":"WhatWasMyHash","outputs":[{"name":"HASH","type":"bytes32"}],"type":"function"},{"constant":false,"inputs":[{"name":"HASH","type":"bytes32"}],"name":"withdraw","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"LimitOfMinutes","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":true,"inputs":[],"name":"Cost","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"inputs":[],"type":"constructor"}]
 */
  modifier OnlyOwner()
  { // Modifier
    if (msg.sender != owner) throw;
    _
  }
  
  uint8 public LimitOfMinutes;//number of minutes you have to announce (1)your choice or (2)wait to withdraw funds back if no one else will play
  uint public Cost;
  string public Announcement;

  address owner;
  uint TimeOfLastPriceChange;
  mapping(bytes32=>bet_t) bets;
  uint playerssofar;
  struct bet_t {
    bytes32 OpponentHash;
    address sender;
    uint timestamp;
    int8 Pick;
    bool can_withdraw;//default==false
  }
  bytes32 LastHash;
  
  function RockPaperScissors()
  {
    playerssofar=0;
    owner=msg.sender;
    //SetInternalValues(limitofminutes, cost);
    LimitOfMinutes=255;
    Cost=100000000000000000;//0.1ETH
    TimeOfLastPriceChange = now - 255*60;
  }
  function SetInternalValues(uint8 limitofminutes, uint cost)
    OnlyOwner
  {
    LimitOfMinutes=limitofminutes;
    if(Cost!=cost)
      {
	Cost=cost;
	TimeOfLastPriceChange=now;
      }
  }
  function OwnerAnnounce(string announcement)
    OnlyOwner
  {
    Announcement=announcement;
  }
 
  function play(bytes32 HASH)
  {
    if(now < TimeOfLastPriceChange + LimitOfMinutes*60 || //the game is temprorary off 
       msg.value != Cost || // pay to play 
       //bets[HASH].can_withdraw == true ||//to play twice, give another random seed in CreateHash() f-n
       bets[HASH].sender != 0 || //throw because someone have already made this bet 
       HASH == 0 //this would be problematic situation
       )
      throw;

    bets[HASH].sender=msg.sender;
    bets[HASH].can_withdraw=true;
    if(playerssofar%2 == 1)
      {
	bets[HASH].OpponentHash=LastHash;
	bets[LastHash].OpponentHash=HASH;
      }
    else
      LastHash=HASH;
    bets[HASH].timestamp=now;
    playerssofar++;
  }

  function announce(bytes32 MySecretRand)
  {
    if(msg.value != 0 ||
       bets[sha3(MySecretRand)].can_withdraw==false)
      throw; //if you try to announce non existing bet (do not waste your gas)
    bets[sha3(MySecretRand)].Pick= int8( uint(MySecretRand)%3 + 1 );
    //there is no check of msg.sender. If your secret rand was guessed by someone else it is no longer secret
    //remember to give good 'random' seed as input of CreateHash f-n.
    bets[sha3(MySecretRand)].timestamp=now;
  }

  function withdraw(bytes32 HASH)
  { //3 ways to payout:
    //1: both sides announced their picks and you have won OR draw happend
    //2: no one else played - you can payout after LimitOfMinutes (100% refund)
    //3: you have announced your pick but opponent not (you have won)
    //note that both of you has "LimitOfMinutes" minutes to announce the SecretRand numbers after 2nd player played
    if(msg.value != 0 || 
       bets[HASH].can_withdraw == false)
      throw;

    if(bets[HASH].OpponentHash!=0 && //case 1
       bets[bets[HASH].OpponentHash].Pick != 0 && //check if opponent announced
       bets[HASH].Pick != 0 //check if player announced
       //it is impossible for val .Pick to be !=0 without broadcasting SecretRand
       )
      {
	int8 tmp = bets[HASH].Pick - bets[bets[HASH].OpponentHash].Pick;
	if(tmp==0)//draw?
	  {
	    bets[HASH].can_withdraw=false;
	    if(!bets[HASH].sender.send(Cost*99/100)) //return ETH
	      throw;
	    else
	      if(!owner.send(Cost/100))
		throw;
	  }
	else if(tmp == 1 || tmp == -2)//you have won
	  {
	    bets[HASH].can_withdraw=false;
	    bets[bets[HASH].OpponentHash].can_withdraw=false;
	    if(!bets[HASH].sender.send(2*Cost*99/100)) //refund
	      throw;	    
	    else
	      if(!owner.send(2*Cost/100))
		throw;
	  }
	else
	  throw;
      }
    else if(bets[HASH].OpponentHash==0 && //case 2
	    now > bets[HASH].timestamp + LimitOfMinutes*60)
      {
	bets[HASH].can_withdraw=false;
	if(!bets[HASH].sender.send(Cost)) //refund
	  throw;

	//if we are here that means we should repair playerssofar
	--playerssofar;
      }
    else if(bets[HASH].OpponentHash!=0 && 
	    bets[bets[HASH].OpponentHash].Pick == 0 && //opponent did not announced
	    bets[HASH].Pick != 0 //check if player announced
	    )//case 3
      {
	//now lets make sure that opponent had enough time to announce
	if(//now > (time of last interaction from player or opponent)
	   now > bets[HASH].timestamp + LimitOfMinutes*60 &&
	   now > bets[bets[HASH].OpponentHash].timestamp + LimitOfMinutes*60
	   )//then refund is possible
	  {
	    bets[HASH].can_withdraw=false;
	    bets[bets[HASH].OpponentHash].can_withdraw=false;
	    if(!bets[HASH].sender.send(2*Cost*99/100)) 
	      throw;
	    else
	      if(!owner.send(2*Cost/100))
		throw;
	  }
	else
	  throw;//you still need to wait some more time
      }
    else
      throw; //throw in any other case
    //here program flow jumps
    //and program ends
  }

  function IsPayoutReady__InfoFunction(bytes32 MyHash)
    constant
    returns (string Info) 
  {
    // "write your hash"
    // "you can send this hash and double your ETH!"
    // "wait for opponent [Xmin left]"
    // "you can announce your SecretRand"
    // "wait for opponent SecretRand"
    // "ready to withdraw - you have won!"
    // "you have lost, try again"
    if(MyHash == 0)
      return "write your hash";
    if(bets[MyHash].sender == 0) 
      return "you can send this hash and double your ETH!";
    if(bets[MyHash].sender != 0 &&
       bets[MyHash].can_withdraw==false) 
      return "this bet is burned";
    if(bets[MyHash].OpponentHash==0 &&
       now < bets[MyHash].timestamp + LimitOfMinutes*60)
      return "wait for other player";
    if(bets[MyHash].OpponentHash==0)
      return "no one played, use withdraw() for refund";
    
    //from now there is opponent
    bool timeforaction =
      (now < bets[MyHash].timestamp + LimitOfMinutes*60) ||
      (now < bets[bets[MyHash].OpponentHash].timestamp + LimitOfMinutes*60 );
    
    if(bets[MyHash].Pick == 0 &&
       timeforaction
       )
      return "you can announce your SecretRand";
    if(bets[MyHash].Pick == 0)
      return "you have failed to announce your SecretRand but still you can try before opponent withdraws";
    if(bets[bets[MyHash].OpponentHash].Pick == 0 &&
       timeforaction
       )
      return "wait for opponent SecretRand";


    bool win=false;
    bool draw=false;
    int8 tmp = bets[MyHash].Pick - bets[bets[MyHash].OpponentHash].Pick;
    if(tmp==0)//draw?
      draw=true;
    else if(tmp == 1 || tmp == -2)//you have won
      win=true;
    
    if(bets[bets[MyHash].OpponentHash].Pick == 0 ||
       win
       )
      return "you have won! now you can withdraw your ETH";
    if(draw)
      return "Draw happend! withdraw back your funds";


    return "you have lost, try again";
  }

  function WhatWasMyHash(bytes32 SecretRand)
    constant
    returns (bytes32 HASH) 
  {
    return sha3(SecretRand);
  }

  function CreateHash(uint8 RockPaperOrScissors, string WriteHereSomeUniqeRandomStuff)
    constant
    returns (bytes32 SendThisHashToStart,
	     bytes32 YourSecretRandKey,
	     string Info)
  {
    uint SecretRand;

    SecretRand=3*( uint(sha3(WriteHereSomeUniqeRandomStuff))/3 ) + (RockPaperOrScissors-1)%3;
    //SecretRand%3 ==
    //0 - Rock
    //1 - Paper
    //2 - Scissors

    if(RockPaperOrScissors==0)
      return(0,0, "enter 1 for Rock, 2 for Paper, 3 for Scissors");

    return (sha3(bytes32(SecretRand)),bytes32(SecretRand),  bets[sha3(bytes32(SecretRand))].sender != 0 ? "someone have already used this random string - try another one" :
                                                            SecretRand%3==0 ? "Rock" :
	                                                        SecretRand%3==1 ? "Paper" :
	                                                        "Scissors");
  }

}

Contract Security Audit

Contract ABI

[{"constant":false,"inputs":[{"name":"limitofminutes","type":"uint8"},{"name":"cost","type":"uint256"}],"name":"SetInternalValues","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"Announcement","outputs":[{"name":"","type":"string"}],"type":"function"},{"constant":true,"inputs":[],"name":"LimitOfMinutes","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":false,"inputs":[{"name":"MySecretRand","type":"bytes32"}],"name":"announce","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"MyHash","type":"bytes32"}],"name":"IsPayoutReady__InfoFunction","outputs":[{"name":"Info","type":"string"}],"type":"function"},{"constant":true,"inputs":[{"name":"SecretRand","type":"bytes32"}],"name":"WhatWasMyHash","outputs":[{"name":"HASH","type":"bytes32"}],"type":"function"},{"constant":false,"inputs":[{"name":"HASH","type":"bytes32"}],"name":"withdraw","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"HASH","type":"bytes32"}],"name":"play","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"announcement","type":"string"}],"name":"OwnerAnnounce","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"RockPaperOrScissors","type":"uint8"},{"name":"WriteHereSomeUniqeRandomStuff","type":"string"}],"name":"CreateHash","outputs":[{"name":"SendThisHashToStart","type":"bytes32"},{"name":"YourSecretRandKey","type":"bytes32"},{"name":"Info","type":"string"}],"type":"function"},{"constant":true,"inputs":[],"name":"Cost","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"inputs":[],"type":"constructor"}]

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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