# Advanced

- [Reusing contracts](/knowledge-base/for-creators/advanced/reusing-contracts.md)
- [Randomization algorithm](/knowledge-base/for-creators/advanced/randomization-algorithm.md)
- [Upload asset specifications](/knowledge-base/for-creators/advanced/upload-asset-specifications.md)
- [Fulfilling auctions for non-transferable tokens](/knowledge-base/for-creators/advanced/fulfilling-auctions-for-non-transferable-tokens.md)