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There may be a few misunderstandings around BIP32/BIP44 key derivation and bcoin wallet usage in particular. I re-wrote your script below to demonstrate how to use bcoin multisig wallets and manually derive multisig P2SH addresses from keys. If you run it, you should see all three output addresses are identical. Here are a few things you need to know for ...


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You are correct in thinking that there is only one private key for one public key (or rather that is one of the assumptions that ECDSA relies on). While technically it is possible for a Bitcoin address to have multiple public keys and therefore multiple private keys, this is extremely unlikely to occur as it requires a hash collision. Of course there are ...


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Also as @bitcoin hodler has pointed out, the gap limit is not just a backup restore issue. usually for commercial purposes your users may be curious to see the checkout page without actually checking out thereby generating unused addresses. I suggest one can satisfy their curiosity by including a demo checkout page thereby reducing the number of them that ...


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What's best way to scan addresses without submitting so much request (for each index) to blockchain explorer to scan funds? You should not build your service to trust some third party blockchain explorer service. If you are handling payments from customers, you should be running your own node, and looking to it for confirmation of payments.


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How much UTXO each address should have to consider generating new address to avoid address re-using? Preventing address re-use by itself means that an address should not be used more than once. So unless, someone sends you two outputs to the same address in the same transaction (highly unlikely) you are going to end up with one UTXO per address. Preventing ...


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Trezor follows (and helped design) BIP44. BIP44 details how a single mnemonic may be used to create individual keychains for different blockchains, and how multiple accounts may work within those keychains. This is not a foolproof system - if you deviate from the expectations of BIP 44 (such as using addresses beyond the 20 address gap limit) automated ...


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