When requesting Rococo slots here, there are two options:

  • Upload your Genesis Head (genesis state) - Do not submit a compressed file.
  • Upload your Validation Code (genesis runtime Wasm) - Do not submit a compressed file.

I am confused what exactly should I need to upload there?

1 Answer 1


If you follow the Substrate tutorial: Connect a local parachain there is a section where it shows you how to export information about its runtime and genesis state: Prepare the parachain collator.

1- Export the WebAssembly runtime for the parachain.

./target/release/parachain-template-node export-genesis-wasm --chain your-chainspec.json name-of-your-wasm

2- And Generate a parachain genesis state.

./target/release/parachain-template-node export-genesis-state --chain your-chainspec.json name-of-your-genesis-state

What you have to upload in the issue for requesting Rococo slots are this 2 files you have just generated: name-of-your-wasm and name-of-your-genesis-state. Drag and drop the files exactly like that or you can copy the content of this files and paste there. What means with the Do not submit a compressed file is basically to upload only the file and do not compressed it to avoid issues when retrieving the data.

  • what format should I make while creating file?
    – go11li
    Commented Aug 7, 2023 at 7:00
  • I just create file with name para-4284-genesis-state but I can't upload this file
    – go11li
    Commented Aug 7, 2023 at 7:01
  • What's the error? an easy trick is to convert this file to .txt (rename it) and you will be able to upload
    – Alex Bean
    Commented Aug 7, 2023 at 7:05
  • thanks @Alex, how much time does it take to accept my request?
    – go11li
    Commented Aug 7, 2023 at 11:06
  • the time it depends, yours should be onboarding now
    – Alex Bean
    Commented Aug 7, 2023 at 13:01

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