diff --git a/master/server.go b/master/server.go
new file mode 100644
index 0000000..2eb2898
--- /dev/null
+++ b/master/server.go
@@ -0,0 +1,85 @@
+package master
+
+import "context"
+import "log"
+import "math/rand"
+
+import "github.com/google/uuid"
+
+import "pcloud/api"
+
+type chunkServers struct {
+	address string
+}
+
+type BlobStatus int
+
+const (
+	NEW BlobStatus = iota
+)
+
+type ChunkStatus int
+
+const (
+	ASSIGNED ChunkStatus = iota
+	STORED
+)
+
+type chunkReplica struct {
+	chunkServer string
+	status      ChunkStatus
+}
+
+type chunk struct {
+	id      string
+	replica []chunkReplica
+}
+
+type blob struct {
+	id     string
+	status BlobStatus
+	chunks []chunk
+}
+
+type MasterServer struct {
+	chunkServers []string
+	blobs        []*blob
+}
+
+func NewMasterServer() *MasterServer {
+	return &MasterServer{}
+}
+
+func (s *MasterServer) AddChunkServer(
+	ctx context.Context,
+	request *api.AddChunkServerRequest) (*api.AddChunkServerResponse, error) {
+	s.chunkServers = append(s.chunkServers, request.Address)
+	log.Printf("Registered Chunk server: %s", request.Address)
+	return &api.AddChunkServerResponse{}, nil
+}
+
+func (s *MasterServer) CreateBlob(
+	ctx context.Context,
+	request *api.CreateBlobRequest) (*api.CreateBlobResponse, error) {
+	if int(request.NumReplicas) > len(s.chunkServers) {
+		return nil, nil
+	}
+	resp := api.CreateBlobResponse{
+		BlobId: uuid.New().String(),
+		Chunk: []*api.ChunkStorageMetadata{
+			{ChunkId: uuid.New().String()},
+		}}
+	ids := rand.Perm(len(s.chunkServers))
+	for i := 0; i < int(request.NumReplicas); i++ {
+		resp.Chunk[0].Server = append(
+			resp.Chunk[0].Server,
+			s.chunkServers[ids[i]])
+	}
+	return &resp, nil
+}
+
+func (s *MasterServer) GetBlobMetadata(
+	ctx context.Context,
+	request *api.GetBlobMetadataRequest) (*api.GetBlobMetadataResponse, error) {
+	return nil, nil
+}