> For the complete documentation index, see [llms.txt](https://docs.giwa.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.giwa.io/notices/en/giwa-chain.md).

# GIWA Chain Notices

- [Upgrade 19 Karst hardfork](https://docs.giwa.io/notices/en/giwa-chain/upgrade-19.md)
- [End of Support for op-geth and transition to op-reth](https://docs.giwa.io/notices/en/giwa-chain/op-geth-sunset.md)
- [Flashblocks Support](https://docs.giwa.io/notices/en/giwa-chain/flashblocks.md)
- [Archive](https://docs.giwa.io/notices/en/giwa-chain/archive.md)
- [Upgrade 18 Protocol upgrade](https://docs.giwa.io/notices/en/giwa-chain/archive/upgrade-18.md)
- [Upgrade 17 Jovian hardfork](https://docs.giwa.io/notices/en/giwa-chain/archive/upgrade-17.md)
- [Upgrade 16a Protocol upgrade](https://docs.giwa.io/notices/en/giwa-chain/archive/upgrade-16a.md)


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