> For the complete documentation index, see [llms.txt](https://contact-108.gitbook.io/spongebored-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://contact-108.gitbook.io/spongebored-whitepaper/technical-aspects/contract.md).

# Contract 📃

### Technical aspects

The contract is ERC-721 Non-Fungible Token Standard. Compiled in Version v0.8.7+commit.e28d00a7 under the SPDX-License-Identifier: MIT 

The structure is written in Solidity, a new language that is subject to continuous improvement on an on-going basis. 

### Optimization

**Yes** the contract is optimized so the transactions will flow without encountering any problem, meaning the Gas fee will be significantly lower.