diff --git a/knowledge base/acronyms and abbreviations.md b/knowledge base/acronyms and abbreviations.md
index 43d9861..b3ed0d5 100644
--- a/knowledge base/acronyms and abbreviations.md	
+++ b/knowledge base/acronyms and abbreviations.md	
@@ -41,6 +41,7 @@
 | DB      | Data Base                                              |                                                                                                     |
 | DBMS    | DB Management System                                   |                                                                                                     |
 | DDL     | Data Definition Language                               |                                                                                                     |
+| [DePIN] | Decentralized Physical Infrastructure Network          |                                                                                                     |
 | DKIM    | DomainKeys Identified Mail                             |                                                                                                     |
 | DML     | Data Manipulation Language                             |                                                                                                     |
 | EA      | Extended Attributes                                    |                                                                                                     |
@@ -64,6 +65,7 @@
 | HPC     | High Performance Computing                             | Collections of systems and tools used to achieve a greater processing capacity than the single unit |
 | IaC     | [Infrastructure as Code][iac]                          |                                                                                                     |
 | IC      | Integrated Circuit                                     |                                                                                                     |
+| IoT     | Internet of Things                                     | Also see [LoRa]                                                                                     |
 | IP      | Internet Protocol                                      |                                                                                                     |
 | IPvX    | Internet Protocol version X                            |                                                                                                     |
 | ISP     | Internet Service Provider                              |                                                                                                     |
@@ -118,9 +120,9 @@
 | UART    | Universal Asynchronous Receiver and Transmitter        |                                                                                                     |
 | UDP     | User Datagram Protocol                                 |                                                                                                     |
 | UFW     | Uncomplicated FireWall                                 |                                                                                                     |
-| URI     | Uniform Resource Identifier                            |                                                                                                     |
-| URL     | Uniform Resource Locator                               |                                                                                                     |
-| URN     | Uniform Resource Name                                  |                                                                                                     |
+| URI     | Uniform Resource Identifier                            | [uri vs url vs urn]                                                                                 |
+| URL     | Uniform Resource Locator                               | [uri vs url vs urn]                                                                                 |
+| URN     | Uniform Resource Name                                  | [uri vs url vs urn]                                                                                 |
 | USB     | Universal Serial Bus                                   |                                                                                                     |
 | UT      | Unit Test                                              |                                                                                                     |
 | UX      | User eXperience                                        |                                                                                                     |
@@ -158,7 +160,8 @@
 [adr]: adr.md
 [bash]: bash.md
 [cni]: cni.md
-[fhs]: fhs.placeholder
+[depin]: depin.md
+[fhs]: filesystem%20hierarchy%20standard.md
 [fish]: fish.md
 [iac]: iac.md
 [kubernetes]: kubernetes/README.md
@@ -167,6 +170,7 @@
 [ssh]: ssh.md
 [sssd]: sssd.md
 [terraform enterprise]: terraform%20enterprise.md
+[uri vs url vs urn]: uri%20vs%20url%20vs%20urn.webp
 [vim]: vim.md
 [yaml]: yaml.md
 [zfs]: zfs.md
diff --git a/knowledge base/depin.md b/knowledge base/depin.md
new file mode 100644
index 0000000..d3846c9
--- /dev/null
+++ b/knowledge base/depin.md	
@@ -0,0 +1,62 @@
+# Decentralized Physical Infrastructure Networks
+
+> TODO
+
+Intro
+
+<!-- Remove this line to uncomment if used
+## Table of contents <!-- omit in toc -->
+
+1. [TL;DR](#tldr)
+1. [Further readings](#further-readings)
+   1. [Sources](#sources)
+
+## TL;DR
+
+<!-- Uncomment if used
+<details>
+  <summary>Setup</summary>
+
+```sh
+```
+
+</details>
+-->
+
+<!-- Uncomment if used
+<details>
+  <summary>Usage</summary>
+
+```sh
+```
+
+</details>
+-->
+
+<!-- Uncomment if used
+<details>
+  <summary>Real world use cases</summary>
+
+```sh
+```
+
+</details>
+-->
+
+## Further readings
+
+### Sources
+
+- [DePIN Explained: What Are Decentralized Physical Infrastructure Networks?]
+
+<!--
+  Reference
+  ═╬═Time══
+  -->
+
+<!-- In-article sections -->
+<!-- Knowledge base -->
+<!-- Files -->
+<!-- Upstream -->
+<!-- Others -->
+[depin explained: what are decentralized physical infrastructure networks?]: https://hackernoon.com/depin-explained-what-are-decentralized-physical-infrastructure-networks
diff --git a/knowledge base/uri vs url vs urn.webp b/knowledge base/uri vs url vs urn.webp
new file mode 100644
index 0000000..2710ae7
Binary files /dev/null and b/knowledge base/uri vs url vs urn.webp differ