diff --git a/contracts/lib/ethereans/bank/Bank.sol b/contracts/lib/ethereans/bank/Bank.sol
index fa27df6..e12081d 100644
--- a/contracts/lib/ethereans/bank/Bank.sol
+++ b/contracts/lib/ethereans/bank/Bank.sol
@@ -3,8 +3,17 @@ pragma solidity  ^0.4.9;
 
 contract Bank {
     
-    
-    
-    
-    
+    event Withdrawn(address reciever, uint256 amount);
+    event Deposited(address sender,uint256 value);
+    //allow deposit and call event
+    function deposit() payable {
+        Deposited(msg.sender, msg.value);
+    }
+
+    //withdraw if locked and not paid, updates epoch
+    function withdrawal(address dest, uint amount)
+     internal {
+        if(!dest.send(amount)) throw;
+        Withdrawn(msg.sender, amount);
+    }
 }
\ No newline at end of file
diff --git a/contracts/lib/ethereans/bank/CollaborationBank.sol b/contracts/lib/ethereans/bank/CollaborationBank.sol
new file mode 100644
index 0000000..b41ed74
--- /dev/null
+++ b/contracts/lib/ethereans/bank/CollaborationBank.sol
@@ -0,0 +1,98 @@
+pragma solidity ^0.4.0;
+
+/**
+ * Abstract contract used for recieving donations or profits
+ * Withdraw is divided by total tokens each account owns
+ * Unlock period allows transfers
+ * Lock period allow withdraws
+ * Child contract that implement minting should use modifier not_locked in minting function
+ * Inspired by ProfitContainer and Lockable by vDice
+ * 
+ * By Ricardo Guilherme Schmidt
+ * Released under GPLv3 License
+ */
+
+import "./Bank.sol";
+import "../management/EpochLocker.sol";
+import "../token/LockerToken.sol";
+
+contract CollaborationBank is Bank, EpochLocker {
+
+    LockableToken public token;
+    //used for calculating balance and for checking if account withdrawn
+    uint256 public currentPayEpoch;
+    //stores the balance from the lock time
+    uint256 public epochBalance;
+    //used for hecking if account withdrawn
+    mapping (address => uint) lastPaidOutEpoch;
+    //events
+    event Withdrawn(address tokenHolder, uint256 amountPaidOut);
+    event Deposited(address donator,uint256 value);
+
+    public CollaborationBank(LockableToken _token) EpochLockable(8 minutes,12 minutes){
+        token = _token;
+    }
+    
+    //update the balance and payout epoch
+    modifier update_epoch {
+        if(currentPayEpoch < CURRENT_EPOCH) {
+            currentPayEpoch = _token.CURRENT_EPOCH();
+            epochBalance = this.balance;
+        }
+        _;
+    }
+
+    //checks if user already withdrawn
+    modifier not_paid {
+        if (lastPaidOutEpoch[msg.sender] == currentPayEpoch) throw;
+        _;
+    }
+    
+    //check overflow in multiply
+    function safeMultiply(uint256 _a, uint256 _b) private {
+        if (!(_b == 0 || ((_a * _b) / _b) == _a)) throw;
+        _;
+    }
+    
+    //allow deposit and call event
+    function ()
+     payable {
+        deposit();
+    }
+
+    function setLock(bool _lock){
+        token.setLock(_lock);
+        
+    }
+    //withdraw if locked and not paid, updates epoch
+    function withdrawal()
+     external
+     check_lock(true)
+     update_epoch
+     not_paid {
+        uint256 _tokenBalance = token.balanceOf(msg.sender);
+        uint256 _tokenSupply = token.totalSupply();
+        safeMultiply(_tokenBalance, epochBalance);
+        lastPaidOutEpoch[msg.sender] = currentPayEpoch; 
+        if (this.balance >= epochBalance || _tokenBalance == 0 || _tokenSupply == 0) throw;
+        super.withdrawal(msg.sender, (_tokenBalance * epochBalance) / _tokenSupply);
+    }
+
+    //if this coin owns tokens of other CollaborationBank, allow withdraw
+    function withdrawalFrom(CollaborationBank _otherCollaborationToken) {
+        _otherCollaborationToken.withdrawal();
+    }
+
+    //return expected payout in lock or estimated when not locked
+    function expectedPayout(address _tokenHolder)
+     external
+     constant 
+     returns (uint256 payout) {
+        if (now < NEXT_LOCK) //unlocked, estimate
+            payout = (token.balanceOf(_tokenHolder) * this.balance) / token.totalSupply(); 
+        else
+            payout = (token.balanceOf(_tokenHolder) * epochBalance) / token.totalSupply();
+    }
+
+
+}
diff --git a/contracts/lib/ethereans/management/EpochLocker.sol b/contracts/lib/ethereans/management/EpochLocker.sol
new file mode 100644
index 0000000..1d25737
--- /dev/null
+++ b/contracts/lib/ethereans/management/EpochLocker.sol
@@ -0,0 +1,44 @@
+pragma solidity ^0.4.8;
+
+contract EpochLocker is Lockable {
+
+    uint256 public creationTime = now;
+    uint256 public unlockedTime = 25 days 
+    uint256 public lockedTime = 5 days; 
+    uint256 public constant EPOCH_LENGTH = unlockedTime + lockedTime;
+    //current epoch constant formula, recalculated in any contract call
+    uint256 public constant CURRENT_EPOCH = (now - creationTime) / EPOCH_LENGTH + 1;    
+    //next lock constant formula, recalculated in any contract call
+    uint256 public constant NEXT_LOCK = (creationTime + CURRENT_EPOCH * unlockedTime) + (CURRENT_EPOCH - 1) * lockedTime;
+    
+    
+    function EpochLockable(uint256 _unlockedTime, uint256 _lockedTime){ 
+        unlockedTime = _unlockedTime;
+        lockedTime = _lockedTime;
+    }
+    
+    //update lock value if needed or throw if unexpected lock
+    modifier check_lock(bool lockedOnly) {
+        if(lockedOnly){ //method allowed when locked
+            if (NEXT_LOCK < now) { //is locked!
+                if (!lock) setLock(true); //storage says other thing, update it.
+            }
+            else { //is not locked!
+                if (!lock) throw; //unlocked and storage already say so, throw to prevent event flood.
+                setLock(false); //update storage
+                return; //prevent method from running post states.
+            }  
+        }else{ //method allowed when unlocked.
+             if (NEXT_LOCK < now) { //is locked!
+                if (lock) throw; //no need to update storage.
+                setLock(true);//update storage
+                return; //prevent method from running post states.
+            }
+            else { //is not locked!
+                if (lock) setLock(false); //storage says other thing, update it.
+            }  
+        }
+    }
+    
+
+}
\ No newline at end of file
diff --git a/contracts/lib/ethereans/management/Lockable.sol b/contracts/lib/ethereans/management/Lockable.sol
new file mode 100644
index 0000000..eae6ef9
--- /dev/null
+++ b/contracts/lib/ethereans/management/Lockable.sol
@@ -0,0 +1,14 @@
+pragma solidity ^0.4.8;
+
+import "./Owned.sol";
+
+contract Lockable {
+    bool public lock = true;
+    event Locked(bool lock);
+    
+    fuction setLock(bool _lock) internal {
+        Locked(_lock);
+        lock = _lock;
+    }
+    
+}
\ No newline at end of file
diff --git a/contracts/lib/ethereans/token/CollaborationToken.sol b/contracts/lib/ethereans/token/CollaborationToken.sol
deleted file mode 100644
index 6a44312..0000000
--- a/contracts/lib/ethereans/token/CollaborationToken.sol
+++ /dev/null
@@ -1,158 +0,0 @@
-pragma solidity ^0.4.0;
-
-/**
- * Abstract contract used for recieving donations or profits
- * Withdraw is divided by total tokens each account owns
- * Unlock period allows transfers
- * Lock period allow withdraws
- * Child contract that implement minting should use modifier not_locked in minting function
- * Inspired by ProfitContainer and Lockable by vDice
- * 
- * By Ricardo Guilherme Schmidt
- * Released under GPLv3 License
- */
-
-import "./AbstractToken.sol";
-
-contract CollaborationToken is AbstractToken {
-    //creation time, defined when contract is created
-    uint256 public creationTime = now;
-    //time constants, defines epoch size and periods
-    uint256 public constant UNLOCKED_TIME = 25 days;
-    uint256 public constant LOCKED_TIME = 5 days;
-    uint256 public constant EPOCH_LENGTH = UNLOCKED_TIME + LOCKED_TIME;
-    //current epoch constant formula, recalculated in any contract call
-    uint256 public constant CURRENT_EPOCH = (now - creationTime) / EPOCH_LENGTH + 1;    
-    //next lock constant formula, recalculated in any contract call
-    uint256 public constant NEXT_LOCK = (creationTime + CURRENT_EPOCH * UNLOCKED_TIME) + (CURRENT_EPOCH - 1) * LOCKED_TIME;
-    //used for calculating balance and for checking if account withdrawn
-    uint256 public currentPayEpoch;
-    //stores the balance from the lock time
-    uint256 public epochBalance;
-    //stores lock state, used for events
-    bool public lock;
-    //used for hecking if account withdrawn
-    mapping (address => uint) lastPaidOutEpoch;
-    //events
-    event Withdrawn(address tokenHolder, uint256 amountPaidOut);
-    event Deposited(address donator,uint256 value);
-    event Locked();
-    event Unlocked();
-    
-    //checks if not locked and call event on change
-    modifier not_locked {
-        if (NEXT_LOCK < now) {
-            if (lock) throw;
-            lock = true;
-            Locked();
-            return;
-        }
-        else {
-            if (lock) {
-                lock = false;
-                Unlocked();
-            }
-        }
-        _;
-    }
-    
-    //checks if is locked and call event on change
-    modifier locked {
-        if (NEXT_LOCK < now) {
-            if (!lock){
-                lock = true;
-                Locked();
-            }
-        }
-        else {
-            if (!lock) throw;
-            lock = false;
-            Unlocked();
-            return;
-        }
-        _;
-    }
-    
-    //update the balance and payout epoch
-    modifier update_epoch {
-        if(currentPayEpoch < CURRENT_EPOCH) {
-            currentPayEpoch = CURRENT_EPOCH;
-            epochBalance = this.balance;
-        }
-        _;
-    }
-
-    //checks if user already withdrawn
-    modifier not_paid {
-        if (lastPaidOutEpoch[msg.sender] == currentPayEpoch) throw;
-        _;
-    }
-    
-    //check overflow in multiply
-    modifier safe_multiply(uint256 _a, uint256 _b) {
-        if (!(_b == 0 || ((_a * _b) / _b) == _a)) throw;
-        _;
-    }
-    
-    //allow deposit and call event
-    function ()
-     payable {
-        Deposited(msg.sender, msg.value);
-    }
-
-    //withdraw if locked and not paid, updates epoch
-    function withdrawal()
-     external
-     locked
-     update_epoch
-     not_paid
-     safe_multiply(balanceOf(msg.sender), epochBalance) {
-        uint256 _currentEpoch = CURRENT_EPOCH;
-        uint256 _tokenBalance = balanceOf(msg.sender);
-        uint256 _totalSupply = totalSupply;
-        if (this.balance == 0 || _tokenBalance == 0) throw;
-        lastPaidOutEpoch[msg.sender] = currentPayEpoch;
-        uint256 amountToPayOut = (_tokenBalance * epochBalance) / _totalSupply;
-        if(!msg.sender.send(amountToPayOut)) {
-            throw;
-        }
-        Withdrawn(msg.sender, amountToPayOut);
-    }
-
-    //if this coin owns tokens of other lockablecoin, allow withdraw
-    function withdrawalFrom(CollaborationToken _otherCollaborationToken) {
-        _otherCollaborationToken.withdrawal();
-    }
-
-    //return expected payout in lock or estimated when not locked
-    function expectedPayout(address _tokenHolder)
-     external
-     constant 
-     returns (uint256 payout) {
-        if (now < NEXT_LOCK) //unlocked, estimate
-            payout = (balanceOf(_tokenHolder) * this.balance) / totalSupply; 
-        else
-            payout = (balanceOf(_tokenHolder) * epochBalance) / totalSupply;
-    }
-
-    //overwrite not allow transfer during lock
-    function transfer(address _to, uint256 _value) 
-     not_locked
-     returns (bool ok) {
-        return super.transfer(_to,_value);
-    }
-    
-    //overwrite not allow transfer during lock
-    function transferFrom(address _from, address _to, uint256 _value) 
-     not_locked
-     returns (bool ok) {
-        return super.transferFrom(_from,_to,_value);
-    }
-    
-    //overwrite not allow transfer during lock
-    function approve(address _spender, uint256 _value)
-     returns (bool ok) {
-        return super.approve(_spender,_value);
-    }
-
-}
diff --git a/contracts/lib/ethereans/token/LockerToken.sol b/contracts/lib/ethereans/token/LockerToken.sol
new file mode 100644
index 0000000..89425b9
--- /dev/null
+++ b/contracts/lib/ethereans/token/LockerToken.sol
@@ -0,0 +1,49 @@
+pragma solidity ^0.4.0;
+
+/**
+ * Abstract contract used for recieving donations or profits
+ * Withdraw is divided by total tokens each account owns
+ * Unlock period allows transfers
+ * Lock period allow withdraws
+ * Child contract that implement minting should use modifier not_locked in minting function
+ * Inspired by ProfitContainer and Lockable by vDice
+ * 
+ * By Ricardo Guilherme Schmidt
+ * Released under GPLv3 License
+ */
+
+import "./AbstractToken.sol";
+import "../management/Lockable.sol";
+
+contract LockerToken is AbstractToken, Lockable, Owned {
+    Lockable public locker = this;
+    
+    
+    function unlinkLocker() only_owner {
+        locker = this;
+    }
+    function linkLocker(Lockable _locker) only_owner {
+        locker = _locker;
+    }
+    function lock(bool _lock) only_owner {
+        setLock(_lock);
+    }
+    
+    modifier when_locked(bool value){
+        if (lock != value && locker.lock() != value) throw;
+        _;
+    }
+    
+    //overwrite not allow transfer during lock
+    function transfer(address _to, uint256 _value) when_locked(true);
+     returns (bool ok) {
+        return super.transfer(_to,_value);
+    }
+    
+    //overwrite not allow transfer during lock
+    function transferFrom(address _from, address _to, uint256 _value) 
+     returns (bool ok)  when_locked(true) {
+        return super.transferFrom(_from,_to,_value);
+    }
+    
+}
diff --git a/contracts/src/BountyBank.sol b/contracts/src/BountyBank.sol
new file mode 100644
index 0000000..ef04915
--- /dev/null
+++ b/contracts/src/BountyBank.sol
@@ -0,0 +1,63 @@
+pragma solidity ^0.4.9; 
+ 
+import "lib/ethereans/management/Owned.sol"
+ 
+contract BountyBank is Owned {
+    
+    enum State {CLOSED, OPEN, CLAIMED};
+    struct Bounty {
+        State state;
+        uint closedAt;
+        mapping (address => int) deposits;
+        mapping (address => int) claimers;
+        uint balance;
+        uint points;
+     }
+     
+    mapping (uint => Bounty) bounties;
+    uint count = 0;
+
+    function deposit(int num) payable {
+         if(bounties[num].state != OPEN || msg.value == 0) throw;
+         bounties[num].deposits[msg.sender] += msg.value;
+         bounties[num].balance += msg.value;
+    }
+
+    function withdraw(int num) {
+         uint value = bounties[num].deposits[msg.sender];
+         if(bounties[num].state != OPEN || value == 0) throw;
+         delete bounties[num].deposits[msg.sender];
+         if(!msg.sender.send(value)) throw;
+    }
+
+    function open(uint num) only_owner {
+         if(bounties[num].claimed == true) throw;
+         bounties[num].state = State.OPEN;
+    }
+
+    function setClaimer(uint num, address claimer, uint points) only_owner {
+        if(bounties[num].state == State.CLAIMED) throw;
+        bounties[num].claimers[claimer] += points;
+        bounties[num].points += points;
+    }
+
+    function close(uint num) only_owner {
+         if(bounties[num].state == State.CLAIMED) throw;
+         bounties[num].close = true;
+         bounties[num].closedAt = now;
+    }
+     
+    function claim(uint num){
+        if (bounties[num].state == State.OPEN) throw;
+        uint totalPoints = bounties[num].points;
+        if(totalPoints == 0) throw;
+        uint points = bounties[num].claimers[msg.sender];
+        if (points == 0) throw;
+        delete bounties[num].claimers[msg.sender];
+        uint award = (bounties[num].balance / totalPoints)*points;
+        bounties[num].points -= points;
+        bounties[num].balance -= award;
+        if(!msg.sender.send(award)) throw;
+    }
+
+ }
\ No newline at end of file
diff --git a/contracts/src/AbstractBounty.sol b/contracts/src/GitBountyBank.sol
similarity index 100%
rename from contracts/src/AbstractBounty.sol
rename to contracts/src/GitBountyBank.sol
diff --git a/contracts/src/git-repository/GitRepository.sol b/contracts/src/git-repository/GitRepository.sol
index cf15a3a..75ced84 100644
--- a/contracts/src/git-repository/GitRepository.sol
+++ b/contracts/src/git-repository/GitRepository.sol
@@ -15,6 +15,7 @@ pragma solidity ^0.4.8;
  * Released under GPLv3 License
  */
  
+import "lib/ethereans/bank/CollaborationBank.sol";
 import "lib/ethereans/management/Owned.sol";
 import "./GitRepositoryI.sol";
 import "./GitRepositoryToken.sol";
@@ -25,6 +26,9 @@ contract GitRepository is GitRepositoryI, Owned {
     //Address of the oracle, used for github login address lookup
     GitRepositoryStorage public db;
     GitRepositoryToken public token;
+    CollaborationBank public donationBank;
+    BountyBank
+    mapping (address=>uint) beers;
     
     uint256 public subscribers;
     uint256 public watchers;
@@ -37,9 +41,17 @@ contract GitRepository is GitRepositoryI, Owned {
         _;
     }
     
+    function () payable {
+        donationBank.deposit();
+    }
+    
+   
+    
     function GitRepository(uint256 _uid, string _name) {
        db = new GitRepositoryStorage(_uid,_name);
        token = new GitRepositoryToken(_name);
+       donationBank = new CollaborationBank(token);
+       token.linkLocker(donationBank);
     }
     
     //checks if a commit is already claimed
diff --git a/contracts/src/git-repository/GitRepositoryToken.sol b/contracts/src/git-repository/GitRepositoryToken.sol
index 7b7a9c6..1cb70ff 100644
--- a/contracts/src/git-repository/GitRepositoryToken.sol
+++ b/contracts/src/git-repository/GitRepositoryToken.sol
@@ -15,10 +15,10 @@ pragma solidity ^0.4.8;
  * Released under GPLv3 License
  */
 
-import "lib/ethereans/token/CollaborationToken.sol";
+import "lib/ethereans/token/LockerToken.sol";
 import "lib/ethereans/management/Owned.sol";
 
-contract GitRepositoryToken is CollaborationToken, Owned {
+contract GitRepositoryToken is LockerToken {
 
     function GitRepositoryToken(string _repository) {
         setAttribute("name", _repository);
@@ -27,7 +27,7 @@ contract GitRepositoryToken is CollaborationToken, Owned {
     }
     
     function mint(address _who, uint256 _value)
-     only_owner {
+     only_owner when_locked(false)) {
         _mint(_who,_value);
     }