Only the latest minor version of ERC-721 Token — Reference Implementation is supported with security updates. These updates are published as new patch versions. All versioning follows Semantic Versioning. You can find the latest version released on GitHub and simultaneously published on NPM under individual packages.
We really appreciate your help in finding bugs and vulnerabilities in this repository. Please report bugs and vulnerabilities using GitHub Issues and we will pay you according to our bug bounty. If you wish to report issues privately to us then you are still eligible for our bug bounty program and can see additional details on that page.