Create provenance.sol

provenance/provenance.sol

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+// provenance concept contract created by M.ElBoudi, A.Blackwell, M.Terzi et al during Ethereum development workshop in London
+
+contract Certifiers {
+        mapping (address => bool) certifier;
+        address provenance;
+
+        //initialiser is run the first time the contract is uploaded to the network. Launched by Provenance and reads provenance "public key"
+        function Certifiers () {
+            provenance = msg.sender;    
+        }
+
+        function createNewCertifier() returns (bool completed) {
+                certifier[msg.sender] = false;
+                return true;
+        }
+
+        //if Provenance is launching the contract, then the entity becomes certified
+        function certify(address targetCertifier) returns (bool completed) {
+            if (provenance == msg.sender) {
+                certifier[targetCertifier] = true;
+                return true;
+            } else {
+                return false;    
+            }
+        }
+}
+
+contract Producers{
+    struct meta{
+        bytes32 description;
+        uint phoneNumber;
+        bytes32 name;
+        bool certified;
+        }
+        mapping (address => meta) producer;
+
+        function createProducer(bytes32 desc, uint phone, bytes32 name) returns (bool created) {
+            producer[msg.sender].description = desc;
+            producer[msg.sender].phoneNumber = phone;
+            producer[msg.sender].name = name;
+            producer[msg.sender].certified = false;
+            return true;
+        }
+}
+
+contract producerList{
+
+        mapping (address => bytes32) producerList;
+
+        function addProducer(bytes32 desc, uint phone, byte name) returns (bool completed) {
+                var producers = new Producers();
+                return producers.createProducer(desc, phone, name);
+
+        }
+}