Add SB Curated (copied from the smartbugs repository).

dataset/time_manipulation/ether_lotto.sol

@@ -0,0 +1,59 @@
+/*
+ * @article: https://blog.positive.com/predicting-random-numbers-in-ethereum-smart-contracts-e5358c6b8620
+ * @source: https://etherscan.io/address/0xa11e4ed59dc94e69612f3111942626ed513cb172#code
+ * @vulnerable_at_lines: 43
+ * @author: -
+ */
+
+ pragma solidity ^0.4.15;
+
+/// @title Ethereum Lottery Game.
+
+contract EtherLotto {
+
+    // Amount of ether needed for participating in the lottery.
+    uint constant TICKET_AMOUNT = 10;
+
+    // Fixed amount fee for each lottery game.
+    uint constant FEE_AMOUNT = 1;
+
+    // Address where fee is sent.
+    address public bank;
+
+    // Public jackpot that each participant can win (minus fee).
+    uint public pot;
+
+    // Lottery constructor sets bank account from the smart-contract owner.
+    function EtherLotto() {
+        bank = msg.sender;
+    }
+
+    // Public function for playing lottery. Each time this function
+    // is invoked, the sender has an oportunity for winning pot.
+    function play() payable {
+
+        // Participants must spend some fixed ether before playing lottery.
+        assert(msg.value == TICKET_AMOUNT);
+
+        // Increase pot for each participant.
+        pot += msg.value;
+
+        // Compute some *almost random* value for selecting winner from current transaction.
+        // <yes> <report> TIME_MANIPULATION
+        var random = uint(sha3(block.timestamp)) % 2;
+
+        // Distribution: 50% of participants will be winners.
+        if (random == 0) {
+
+            // Send fee to bank account.
+            bank.transfer(FEE_AMOUNT);
+
+            // Send jackpot to winner.
+            msg.sender.transfer(pot - FEE_AMOUNT);
+
+            // Restart jackpot.
+            pot = 0;
+        }
+    }
+
+}