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As I know, in HD wallets, we have a seed that called "master seed" with 256bit length. When we want to generate the master node, we use a Hmac-sha512 with this seed as text and "bitcoin seed" as key. In the result we have 512bit that we split it in two section. In this way we have master private key and chain code. Now how can I compute master public key for this master node?

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