diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c47c3f..b895b98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+## 0.5.0 (2020-07-04)
+
+Feature: ([#5](https://github.com/progrhyme/binq/pull/5))
+
+- (CLI) Add `register` subcommand to add Item into Index
+- (CLI) Add `deregister` subcommand to remove Item from Index
+- (CLI) Add `modify` subcommand to edit properties of Item in Index
+- (install, client) Verify checksum of downloaded item when it is provided by Item JSON
+
+Change: ([#5](https://github.com/progrhyme/binq/pull/5))
+
+- (schema/item) Rename struct ItemChecksums -> ItemChecksum
+
 ## 0.4.0 (2020-07-03)
 
 Feature: ([#4](https://github.com/progrhyme/binq/pull/4))
diff --git a/README.md b/README.md
index 69d6570..de84a6f 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Typical commands to achieve this are following:
 
 ```sh
 bin=/usr/local/bin  # Change to your favorite path
-version=0.4.0       # Make sure this is the latest
+version=0.5.0       # Make sure this is the latest
 os=darwin           # or "linux" is supported
 tmpfile=$(mktemp)
 curl -Lo $tmpfile "https://github.com/progrhyme/binq/releases/download/v${version}/binq_${version}_${os}_amd64.zip"
@@ -58,9 +58,12 @@ binq [install] [-t|--target] SOURCE \
   [GENERAL_OPTIONS]
 
 # Other Commands
-binq new      # Create Item JSON for Index Server
-binq revise   # Add/Edit/Delete a version in Item JSON
-binq version  # Show binq version
+binq new         # Create Item JSON for Index Server
+binq revise      # Add/Edit/Delete a version in Item JSON
+binq register    # Register item JSON into Local Index Dataset
+binq modify      # Modify item properties on Local Index
+binq deregister  # Deregister item from Local Index Dataset
+binq version     # Show binq version
 
 # Show help
 binq [COMMAND] -h|--help
@@ -131,13 +134,33 @@ binq revise ITEM_JSON_FILE VERSION \
 binq revise ITEM_JSON_FILE VERSION --delete [-y|--yes] [GENERAL_OPTIONS]
 ```
 
+## Manipulate Local Index Dataset
+
+You can interact with Index Dataset using `binq`, but currently CLI only supports Local Dataset in
+filesystem.
+
+Commands Syntax:
+
+```sh
+# Register or Update Item content on Local Index Dataset
+binq register pato/to/root[/index.json] path/to/item.json \
+  [-n|--name NAME] [-p|--path PATH] [-y|--yes] [GENERAL_OPTIONS]
+
+# Modify Item properties in Local Index Dataset
+binq modify pato/to/root[/index.json] NAME \
+  [-n|--name NEW_NAME] [-p|--path PATH] [-y|--yes] [GENERAL_OPTIONS]
+
+# Deregister Item from Local Index Dataset
+binq deregister pato/to/root[/index.json] NAME [-y|--yes] [GENERAL_OPTIONS]
+```
+
 # Binq Index Server
 
 `binq` refers to an index server to fetch meta data of an item when its identifier is specified
 instead of full URL.  
 We call it **Binq Index Server**.
 
-It contains the database of downloadable items with their URLs for `binq`.  
+It contains the dataset of downloadable items with their URLs for `binq`.  
 When `binq` send a request to the server, it responds a JSON data which contains information about
 the item.
 
diff --git a/binq.go b/binq.go
index 11b1977..b090100 100644
--- a/binq.go
+++ b/binq.go
@@ -1,6 +1,6 @@
 package binq
 
 const (
-	Version      = "0.4.0"
+	Version      = "0.5.0"
 	EnvKeyServer = "BINQ_SERVER"
 )
diff --git a/internal/cli/deregister.go b/internal/cli/deregister.go
index d48b5d7..96ecca8 100644
--- a/internal/cli/deregister.go
+++ b/internal/cli/deregister.go
@@ -27,7 +27,7 @@ func newDeregisterCmd(common *commonCmd) (self *deregisterCmd) {
 
 func (cmd *deregisterCmd) usage() {
 	const help = `Summary:
-  Deregister an Item from {{.prog}} Index.
+  Deregister an Item from Local {{.prog}} Index Dataset.
 
 Usage:
   {{.prog}} {{.name}} pato/to/root[/index.json] NAME [-y|--yes] [GENERAL_OPTIONS]
diff --git a/internal/cli/install.go b/internal/cli/install.go
index ecd5c69..f4f8478 100644
--- a/internal/cli/install.go
+++ b/internal/cli/install.go
@@ -86,6 +86,9 @@ Available Commands:
   install (Default)  # Install binary or archive item
   new                # Create item JSON for Index Server
   revise             # Add/Edit/Delete a version in item JSON
+  register           # Register item JSON into Local Index Dataset
+  modify             # Modify item properties on Local Index
+  deregister         # Deregister item from Local Index Dataset
   version            # Show {{.prog}} version
 
 Run "{{.prog}} COMMAND -h|--help" to see usage of each command.
diff --git a/internal/cli/modify.go b/internal/cli/modify.go
index 0432fe2..b4091e3 100644
--- a/internal/cli/modify.go
+++ b/internal/cli/modify.go
@@ -42,7 +42,7 @@ func newModifyCmd(common *commonCmd) (self *modifyCmd) {
 
 func (cmd *modifyCmd) usage() {
 	const help = `Summary:
-  Modify the indice properties of an Item in {{.prog}} Index.
+  Modify the indice properties of an Item in Local {{.prog}} Index Dataset.
 
 Usage:
   {{.prog}} {{.name}} pato/to/root[/index.json] NAME \
diff --git a/internal/cli/register.go b/internal/cli/register.go
index 9cbb941..fbe5dc4 100644
--- a/internal/cli/register.go
+++ b/internal/cli/register.go
@@ -48,7 +48,7 @@ func newRegisterCmd(common *commonCmd) (self *registerCmd) {
 
 func (cmd *registerCmd) usage() {
 	const help = `Summary:
-  Register or Update Item content on {{.prog}} Index.
+  Register or Update Item content on Local {{.prog}} Index Dataset.
 
 Usage:
   {{.prog}} {{.name}} pato/to/root[/index.json] path/to/item.json \