u/Natural_Elk8075

At the screenshots you can see how:

A) Mod cracks a seed on a server with UltimateAntiSeedCracker datapack and a plugin AntiSeedCracker.
B) Mod successfully proceeds with locating structures on the server with UltimateAntiSeedCracker datapack working.
C) It was impossible to get a correctly working /locate command or /seed command on server even with OP, because of a datapack protection. (proves that a datapack works).

Last time a u/pulnocni-knihovna mentioned that the mod had a serious problem - it is not capable of fighting datapack protection. Plugins are not really protecting the seed, because they are not moving the structures - datapacks do.

Well, this version solves this problem as well. Pls read how to use it in the github (not gonna explain the whole thing here). Mode now basically is able to -

#Changes

- Added per-server anti-datapack profiles.

- Added custom structure spacing, separation, frequency, and salt settings.

- Added verified UltimateAntiSeedCracker 1.0.0 placement values.

- Added automatic fallback:

Vanilla → UltimateAntiSeedCracker → manual observation.

- Failed profiles now rebuild saved structure observations before retrying.

- Random salts are never guessed.

- Added automatic recording of detected structure start chunks.

- Added placement analysis for estimating compatible spacing and separation values.

- Added village-here proximity evidence when the exact village start chunk is unknown.

- Fixed null-name crashes involving structure comparison and hashing.

- Added client-side structure locating without OP or server /locate.

- Added custom-salt support to local structure locating.

- Added local locating for all vanilla 26.2 biomes through SeedMapper.

- Added spawn-habitat locating—for example, villages and swamp huts for cats.

- Added support for more structure types, including Nether structures, ruined portals, ocean ruins, mansions, mineshafts, and trial chambers.

- Added persistent cracked/manual seeds for each server.

- Added candidate validation and safer evidence rebuilding.

GITHUB - https://github.com/egarrr0808/seedcracker-resilient

https://www.reddit.com/r/MinecraftExploits/s/5sgmc9Uxkr - previous post.

If u do not understand how it works, and what has to be done - ask AI and send it my repo.

If u are a server admin and you want to protect your server - use custom terrain/world generation unrelated to vanilla seed, or try to use custom datapack settings (might not help, as the mod is able to crack it, if a player will find enough of structures of one type.)

If u are just a guy that somehow gets error messages - /seedcracker data clear, if appears again - write here, I will help you or fix a mistake in mod.

So there’s a plugin called AntiSeedCracker, made by Gadse, which sends fake seed information to make seed crackers give up and go, in other words - protecting server seed.

Gaider actually pointed out the main problem years ago: changing the hashed seed makes cracking more annoying, but the world’s structures are still sitting there leaking information like nothing happened.

https://www.spigotmc.org/threads/antiseedcracker-1-20-4-1-21.451684/

Anyway, I made SeedCracker Resilient for Minecraft 26.

> “Thank you for the seed hash. I will now completely ignore it."

It uses structures and dungeons instead, validates the result, and can export the collected evidence to JSON. You can also adjust which finders and evidence types you want to trust for a particular

I tested it on my own Paper 26.2 server with SeedProtector. The server gave it fake seed information, the mod politely ignored it, and then recovered the real seed anyway. No hate toward AntiSeedCracker, SeedProtector, or their developers/projects. This was just a fun technical experiment to see whether changing the client-visible seed is enough.

Spoiler: apparently not.

https://github.com/egarrr0808/seedcracker-resilient

Be aware of possible risks - the only way to detect you for sure with this type of thing is either through https://modrinth.com/plugin/snitch-detector, / both client side and server side https://modrinth.com/plugin/client-id, / or through https://www.spigotmc.org/resources/detect-player-client.108839/.

But, always remember kids, “Visibility is a trap.” — Michel Foucault. The best seed-cracker detector isn’t a plugin. It’s the admin wondering why you visited six shipwrecks and suddenly know where every slime chunk is. And be sure, that on servers with AntiSeedCracker - they will care enough.