FB8PFFHT364M: https://genshin.hoyoverse.com/en/gift?code=FB8PFFHT364M
JS96FEZS3P59: https://genshin.hoyoverse.com/en/gift?code=JS96FEZS3P59
2T86EWGBJP6V: https://genshin.hoyoverse.com/en/gift?code=2T86EWGBJP6V
FB8PFFHT364M: https://genshin.hoyoverse.com/en/gift?code=FB8PFFHT364M
JS96FEZS3P59: https://genshin.hoyoverse.com/en/gift?code=JS96FEZS3P59
2T86EWGBJP6V: https://genshin.hoyoverse.com/en/gift?code=2T86EWGBJP6V
I think this livestream was also the first time that they sent these codes via email if you get the newsletter.