Would anyone like a cheap service that would map your

it's still better for a merchant to put up a printed QR of a p2pkh address than using a RPA. It just works massively easier and since the merchant doesn't need to have the private keys on premises it really isn't something that needs solving

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9 дней назад

bitcoincashautist

Shawn Pringle
Would a system linked to an xpub be any better?

not a good idea to share xpub, if any 1 of derived privkeys leaks, then xpriv can be derived

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9 дней назад

tula s

bitcoincashautist
not a good idea to share xpub, if any 1 of derived...

there is such a thing as an xpub thats not the root one right? can the root one be compromised when the branch is compromised? eg i derive 10 xpubs from the root one and give them out. i derive priv key from xpub7 this key leaks - is the root xpub compromised or just the corresponding xpub 7?

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9 дней назад

JF

tula s
there is such a thing as an xpub thats not the roo...

yes its heirarchical. in addition you can create hardended child keys that cannot be derived from the parent pubkey , only from its private key

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9 дней назад

molecular#123 🐓

JF
yes its heirarchical. in addition you can create ...

Yeah, but can the parent privkey be derived from a keypair that was derived using a hardened path?

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9 дней назад

Tom

tula s
there is such a thing as an xpub thats not the roo...

An xpub can be just for a certain level For instance only the change keys. If you just went change 7, that's a pub key and not an xpub

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9 дней назад

Tom

molecular#123 🐓
Yeah, but can the parent privkey be derived from a...

No Hardened is best understood as disabling the exposure of parent info.

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9 дней назад

bitcoincashautist

tula s
there is such a thing as an xpub thats not the roo...

yeah, there is hardened derivation where leaking child xpub would not compromise higher nodes

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9 дней назад

tula s

bitcoincashautist
yeah, there is hardened derivation where leaking c...

ok so your original statement was a bit misleading and sharing hardened xpubs should be considered as an improvement to sharing addresses.

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9 дней назад

molecular#123 🐓

Tom
No Hardened is best understood as disabling the e...

Thx! I was never sure about that. And thanks @tula_s for asking.

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8 дней назад

molecular#123 🐓

bitcoincashautist
yeah, there is hardened derivation where leaking c...

Стикер

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8 дней назад

Tom

tula s
ok so your original statement was a bit misleading...

An xpub is hierarchical based. - It either is for an entire wallet. - It is for all main addressees OR all change addresses. - Or, last, it can be for exactly one address. There isn't any advantage to having an xpub for one address, too much overhead, just use the actual address. Shorter and simpler.

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8 дней назад

tula s

Tom
An xpub is hierarchical based. - It either is for ...

the advantage is significantly increased privacy as you say just below.

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8 дней назад

JF

it will expose it if its unhardened.

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8 дней назад