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From: Jonas Schnelli <dev@jonasschnelli.ch>
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To: Andreas Schildbach <andreas@schildbach.de>
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Subject: Re: [bitcoin-dev] BIP Proposal: Compact Client Side Filtering for
Light Clients
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>=20
> On the other hand, I remember only 1 (one) inquiry about the privacy
> problems of BIP37 (or privacy at all).
IMO privacy its something developers should make sure users have it.
Also, I think, todays SPV wallets should make users more aware of the =
possible privacy implications.
Do users know, if they pay for a good in a shop while consuming the =
shops WIFI, that the shop-owner as well as the ISP can use that data to =
combine it with the user profile (and ~ALL FUTURE purchases you do with =
the same wallet IN ANY LOCATION online or in-person)?
Do users know, that ISPs (cellular; including Google) can completely =
link the used Bitcoin wallet (again: all purchase including future ones) =
with the to the ISP well known user profile including credit-card data =
and may sell the Bitcoin data to any other data mining company?
If you use BIP37, you basically give your transaction history (_ALL =
TRANSACTIONS_ including transactions in future) to everyone.
>=20
> =46rom a regular user's point of view, privacy is non-issue. Sure,
> everyone would take it for free, but certainly not if it a) delays
> incoming payments or b) quickly eats up your traffic quota.
This may be true because they are not aware of the ramification and I =
don=E2=80=99t think client side filtering is a drop-in replacement for =
todays, smartphone SPV-model.
/jonas
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