Update all testnet references, removing those deprecated

[wackerow]

Issue

Goerli (Görli), Ropsten, Rinkeby testnets are all deprecated, and remaining references to these should be removed.

Of note, some tutorials still reference these. Open for discussion on an individual basis how to handle these, but ideally these are updated to use the Sepolia testnet.

Tasks

• Remove all remaining non-tutorial references to Goerli (Görli), Ropsten, Rinkeby
• Update any tutorial mentions to use Sepolia; or remove entire tutorial if fully dependent upon a deprecated testnet
• Update any use of "Holesovice" to use "Holesky" naming instead

Contribute

Please comment for assignment if you'd like to work on this, thanks!

[dJoshware]

I'm interested in learning how to contribute to something like this!

[sumitvekariya]

I have previously worked on issue like this, I can work on this

#13738

[konopkja]

https://ethereum.org/en/developers/docs/networks/

this page may provide outdated information about current testnets

[YakshitAgarwal]

Can I take this issue @wackerow ?

[hryer]

Hi there, @wackerow. I'm interested in these issues. Is it still relevant or open to contributors?

[hryer]

Thank's @konopkja , will work for this

[TheOnma]

Hello @wackerow is this still open to contribution? I would love to work on it.

[wackerow]

Hey folks! Love all the offerings for support here ❤ Looks like @hryer is a new contributor and @konopkja has assigned so let's start there.

---

@hryer Some slight changes are incoming that maybe you'd be down to address??...

Would review this: https://blog.ethereum.org/2025/03/18/hoodi-holesky

Moving forward, staking operators and infrastructure providers should use Hoodi for validator testing. To allow time for the migration, the Holesky testnet will be supported until September 2025. Aside from validator exits, all other Pectra features can be tested on Holesky.

tl;dr- Holesky is being deprecated over 2025, Hoodi is a new testnet replacing it for purposes related to staking and validator testing. Sepolia loosely remains unchanged for now.

Please take these changes into consideration when making your updates. Let us know if you're having any issues or have clarifying questions 🙏

[wackerow]

And on that note, will confirm that all links currently to https://holesky.launchpad.ethereum.org should be updated to point to https://hoodi.launchpad.ethereum.org

[hryer]

@wackerow Yes, I’ve read it. Thanks for sharing more details! To clarify, anything related to connecting the testnet at the domain validators and staking will reference the Hoodi network. Otherwise, it will refer to the Sepolia network. Is that right?

[wackerow]

@hryer Perfect! Sepolia for dapp developer testing, Hoodi for validator testing

[hryer]

Hey @wackerow, I need your help reviewing my PR for the following tasks:

• Removed all remaining non-tutorial references to Goerli (Görli), Ropsten, and Rinkeby
• Updated any use of "Holesovice" to "Holesky" instead

#15257

As for the tutorials themselves, I'll create a separate PR. If you don't mind, I think we should also recreate the images since most of them still use Goerli or Kovan.