Merge pull request #7 from tschubotz/master

Add Gnosis Safe tx format

README.md

@@ -15,7 +15,9 @@ For now, join us on telegram for the discussion: https://t.me/joinchat/HcTaOxJH6
 
 [tenzorum](https://github.com/austintgriffith/meta-transaction-format-share/blob/master/tenzorum.org.md)
 
-[tokenubscription](https://github.com/austintgriffith/meta-transaction-format-share/blob/master/tokensubscription.com.md) 
+[tokensubscription](https://github.com/austintgriffith/meta-transaction-format-share/blob/master/tokensubscription.com.md) 
+
+[Gnosis Safe](safe.gnosis.io.md) 
 
 
 ## Important problems to solve

safe.gnosis.io.md

@@ -0,0 +1,65 @@
+### Format
+```
+    /// @dev Returns hash to be signed by owners.
+    /// @param to Destination address.
+    /// @param value Ether value.
+    /// @param data Data payload.
+    /// @param operation Operation type.
+    /// @param safeTxGas Fas that should be used for the safe transaction.
+    /// @param dataGas Gas costs for data used to trigger the safe transaction.
+    /// @param gasPrice Maximum gas price that should be used for this transaction.
+    /// @param gasToken Token address (or 0 if ETH) that is used for the payment.
+    /// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
+    /// @param _nonce Transaction nonce.
+    /// @return Transaction hash.
+    function getTransactionHash(
+        address to, 
+        uint256 value, 
+        bytes data, 
+        Enum.Operation operation, 
+        uint256 safeTxGas, 
+        uint256 dataGas, 
+        uint256 gasPrice, 
+        address gasToken,
+        address refundReceiver,
+        uint256 _nonce
+    )
+```
+
+### Rx
+```
+There is currently no endpoint to pull the transactions from.
+```
+
+
+### Tx
+```
+    /// @dev Allows to execute a Safe transaction confirmed by required number of owners and then pays the account that submitted the transaction.
+    ///      Note: The fees are always transfered, even if the user transaction fails. 
+    /// @param to Destination address of Safe transaction.
+    /// @param value Ether value of Safe transaction.
+    /// @param data Data payload of Safe transaction.
+    /// @param operation Operation type of Safe transaction.
+    /// @param safeTxGas Gas that should be used for the Safe transaction.
+    /// @param dataGas Gas costs for data used to trigger the safe transaction and to pay the payment transfer
+    /// @param gasPrice Gas price that should be used for the payment calculation.
+    /// @param gasToken Token address (or 0 if ETH) that is used for the payment.
+    /// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
+    /// @param signatures Packed signature data ({bytes32 r}{bytes32 s}{uint8 v})
+    function execTransaction(
+        address to, 
+        uint256 value, 
+        bytes data, 
+        Enum.Operation operation, 
+        uint256 safeTxGas,
+        uint256 dataGas,
+        uint256 gasPrice,
+        address gasToken,
+        address refundReceiver,
+        bytes signatures
+    )
+```
+
+Please check the following links for further context and details:
+* https://github.com/gnosis/safe-contracts
+* https://gnosis-safe.readthedocs.io/en/latest/