Tangle is a type of Distributed Ledger Technology (DLT) and an alternative to traditional blockchains. Instead of storing transactions in blocks that are added in a linear chain, Tangle uses a structure called a Directed Acyclic Graph (DAG). This structure allows every new transaction to confirm two previous ones, creating a mesh-like system of verifications. Tangle was introduced by IOTA, a project focused on building infrastructure for the Internet of Things (IoT). It was designed to solve issues like high fees, limited scalability, and energy inefficiency often found in conventional blockchain networks.

 

How Does Tangle Work?

In Tangle, every transaction has a dual purpose:

1.) It transfers value or data.

2.) It validates two older transactions in the network.

Because of this system:

• There are no miners.
• Users validate transactions themselves.
• There are no transaction fees.
• The system becomes faster and more secure as more people use it.

This self-reinforcing structure is ideal for networks with many small, frequent interactions—like devices communicating in a smart city.

 

Key Benefits of Tangle

• Feeless Transactions:
  There are no miners to pay. This makes microtransactions possible, even for amounts less than a cent.
• Scalability:
  Unlike blockchains that slow down with more users, Tangle actually speeds up as the network grows.
• Energy Efficiency:
  Without mining, the system consumes very little power—great for sustainability.
• Decentralization:
  Everyone participates in securing the network.

 

How Tangle Differs from Blockchain

Instead of:

• Chaining blocks together,
• Paying miners for validation,
• And worrying about high gas fees,

Tangle:

• Connects transactions directly to one another,
• Has no mining process,
• And operates entirely fee-free.

 

Use Cases for Tangle

Tangle was created with IoT (Internet of Things) in mind. Its strengths make it suitable for:

• Smart cities
• Automated tolls and transport
• Micropayments between machines
• Real-time supply chain tracking

 

Current Challenges

Despite its potential, Tangle is still growing. Some challenges include:

• Limited adoption compared to blockchains like Ethereum or Bitcoin.
• Reliance on IOTA’s “Coordinator”, a central node that secures the network. The team plans to remove it (a process called “Coordicide”) to achieve full decentralization.
• Security during low usage: When few transactions happen, the network becomes slower and more vulnerable.

 

Conclusion

Tangle is a promising alternative to blockchain, especially for fast, feeless, and scalable applications. Its innovative structure could be the key to enabling billions of connected devices to exchange data and payments in real time. As IOTA and similar projects mature, Tangle may play a major role in the decentralized future.