Where could I find a sample simple chain spec for substrate ready for production?

3 Answers 3


Why not just export one from substrate-node-template ? You can run the following cmd:

${path-to-substrate-template-binary} build-spec

Some parachain teams commit them to their Github (so poke around in their Substrate repos).

You can see Polkadot's chain spec here:

There are several others from the ecosystem:


Relay chain

The Local relay chain tutorial on substrate.io has links to predefined rococo chain specs for local use. You can download the plain version and browse it.


The Connect a local parachain tutorial has instructions how to generate (and modify) specs from the parachain template

./target/release/parachain-collator build-spec --disable-default-bootnode > rococo-local-parachain-plain.json

You can generate one and browse it.

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