Can I use one mnemonic for all Avalanche chains?

Is it possible? between P, C and X.

Yes. The avax wallet already supports that, but does not support defi on the c-chain currently. So I assume you want to know how to do it with metamask and the avax wallet.

Best way is you use a ledger. You can then login to the avax wallet and metamask with the same device.

The other way would be to generate a seed on the official avax wallet. From there you can export a private key and import it in metamask to use the same C-Chain address.

thank you! appreciate that

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