# TOWER Achievement Badge

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The TOWER Achievement Badge is a Souldbound Token (non-transferrable) NFT collection that signifies the contribution and achievements of the player's journey within the TOWER Ecosystem.

The concept of **Soulbound token (SBT)** was first discussed by [Ethereum co-founder Vitalik Buterin](https://vitalik.ca/general/2022/01/26/soulbound.html) in January 2022. a soulbound token indicates non-transferrable ownership in the blockchain world that’s tied to a specific person, once it’s obtained, it cannot be transferred or sold to others. Learn more about Soulbound tokens from [CoinDesk](https://www.coindesk.com/learn/what-are-soulbound-tokens-the-non-transferrable-nft-explained/) and [Binance](https://academy.binance.com/en/articles/what-are-soulbound-tokens-sbt).

TOWER Achievement Badge NFTs could be obtained from various Ecosystem Play-and-earn events, community engagement events,  and external collaborations, Including:

**CDH Play-and-earn events:**&#x20;

* Avatar XP Gain Elite Badge&#x20;
* Daily Star Chest Attendance Badge

**Co-op Battle:**

* Warrior Badge
* Participation Badge

**Meme Competition:**

* Discord Meme God Badge

**External Collaboration:**&#x20;

* BAYC Halloween Invasion Badge
* TOWER x OnePlanet Event Badge

All badges are viewable on [NFT marketplaces](https://linktr.ee/towertoken) and TOWER[ website](https://www.crazydefenseheroes.com/achievements).