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Judging Technology » Post: Electronic Decklists for Competitive REL events run with event link

Electronic Decklists for Competitive REL events run with event link

Aug. 18, 2025 02:42:12 AM

Jonas Swiatek
Level 2 Judge (Swedish Judge Association), Judge

Copenhagen, Denmark

Electronic Decklists for Competitive REL events run with event link

Originally posted by Isaac King:

There is an error that can appear on the homepage: "This code doesn't seem right. Check that you entered it correctly.". What causes this error to appear?

That's because the event code not entered doesn't exist or is otherwise invalid.

There's a checksum built into the string of letters so attempts to iterate them can be rejected without loading the database.

 

Aug. 18, 2025 12:31:59 PM

Isaac King
Level 1 Judge (Judge Foundry), Judge

Barriere, British Columbia, Canada

Electronic Decklists for Competitive REL events run with event link

Neat, I didn't know that. What's the checksum?

Aug. 18, 2025 03:46:37 PM

Jonas Swiatek
Level 2 Judge (Swedish Judge Association), Judge

Copenhagen, Denmark

Electronic Decklists for Competitive REL events run with event link

Originally posted by Isaac King:

Neat, I didn't know that. What's the checksum?

Essentially just ID + SHORTHASH(ID, SECRET). So it's not so much a checksum as it's a signature. Just a very small one.

Aug. 18, 2025 07:48:09 PM

Isaac King
Level 1 Judge (Judge Foundry), Judge

Barriere, British Columbia, Canada

Electronic Decklists for Competitive REL events run with event link

Ah, so you're not validating Eventlink codes; you're just checking whether it's a code that someone has made an event for on decklist.lol. I see.

Aug. 19, 2025 02:45:50 AM

Jonas Swiatek
Level 2 Judge (Swedish Judge Association), Judge

Copenhagen, Denmark

Electronic Decklists for Competitive REL events run with event link

Originally posted by Isaac King:

Ah, so you're not validating Eventlink codes; you're just checking whether it's a code that someone has made an event for on decklist.lol. I see.

Correct!

Eventlink, unfortunately, offers no way it integrate with it at all.

April 4, 2026 12:06:01 PM

James Skoog
Level 2 Judge (Judge Foundry), Judge

USA - Plains

Electronic Decklists for Competitive REL events run with event link

I've noticed that creating a tournament on decklist.lol seems to result in the date not "sticking" as I would expect it to. For instance, I created a test tournament and set the Tournament Date to 04/04/2026 during that process. However, after clicking the Create Tournament button, I can see that the Tournament Date has been set to 4/3/2026 in the Tournament Information panel despite my earlier input. Is this intended behavior?