Is there an official substrate-based chain-list with chain-ids within polkadot-js?

[wottpal]

Hey!

From the EVM-ecosystem, I was used to having an official chain ID for every chain (e.g. 1 for Ethereum Mainnet, 137 for Polygon, etc.). See the following repositories/files on GitHub for reference:

• https://github.com/DefiLlama/chainlist/blob/main/constants/chainIds.js
• https://github.com/wagmi-dev/wagmi/blob/cabba6a6fd68a25bdfcaf47a19b4b34ffb4d83bb/packages/core/src/constants/chains.ts#L21

Is there something equivalent for Substrate-based chains? I'm asking here because I assume you have something like this in polkadot-js already somewhere. I'm currently building a boilerplate for dynamic multi-chain usage, and something like this would come in handy, otherwise, I would have to define inofficial IDs myself. The only things I could find via search:

• https://github.com/polkadot-js/build-bundle/blob/231c37d3c97bf9baaf493aa23ee8a037ca549e6c/bundle-polkadot-hw-ledger.js#L597 (is cla meant to be an identifier? but unfortunately, there are testnets missing)
• I also found this by subscan, but also without uint IDs: https://github.com/subscan-explorer/network-runtime-check/blob/17ffba30ff5941aad225f81fd1e44f470516c24e/conf/config.yaml

ty in advance

[jacogr]

This is not Ethereum, so there is no chain id.

There is the ss58 prefixes that can be used for address encoding, see https://github.com/paritytech/ss58-registry which is probably closest to a "list of chains" (Testnets are not registered in this list, they should always use the general 42 prefix for addresses)

The first repo you linked to is only for Ledger apps, aligning with the Ledger repo by ZondaX - some chains have Ledger apps, some do not. (Cannot comment on the second link)

[wottpal]

Thank you for the reference to ss58-registry, really appreciated! I probably have to use network string identifiers to be also able to separate testnets from each other, but that's not a big deal. I just wanted to make sure I don't miss out on anything :)

ty

[polkadot-js-bot]

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