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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Application: Bitcoin Core Feature: Enhanced privacy by change obfuscation Operation: Provide a user selectable 'Enhanced privacy' option for transact= ion creation, when true the transaction randomly distributes change across = up to twenty output addresses (minimum five?), provided each output is not = dust. Suggestions: Perhaps limit the total random number of addresses to distribu= te to by change amount. Optionally: If necessary, additional inputs can be = selected if available to increase change although consider if this may even= tually result in a decrease in obfuscation in some cases when the outputs a= re spent. Issues: Transaction cost will be higher for the initial spend with the chan= ge due to increased outputs and, possibly for later spending the change dep= ending on the future spend amount(s) and the number of inputs required. Argument: If transaction linkage is possible, it is still possible with the= obfuscated change but, it is far more difficult to guess what was retained= by the owner of the originating utxo's unless the new change outputs are s= pent together in the same transaction. Regards, Damian Williamson --_000_PS2P216MB0179FCA8077AAE946BFA2D069DD50PS2P216MB0179KORP_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Application: Bitcoin Core

Feature: Enhanced privacy by change obfuscation

Operation: Provide a user selectable 'Enhanced privacy' option for transact= ion creation, when true the transaction randomly distributes change across = up to twenty output addresses (minimum five?), provided each output is not = dust.

Suggestions: Perhaps limit the total random number of addresses to distribu= te to by change amount. Optionally: If necessary, additional inputs can be selected if availa= ble to increase change although consider if this may eventually result in a= decrease in obfuscation in some cases when the outputs are spent.
Issues: Transaction cost will be higher for the initial spend with the chan= ge due to increased outputs and, possibly for later spending the change dep= ending on the future spend amount(s) and the number of inputs required.

Argument: If transaction linkage is possible, it is still possible with the= obfuscated change but, it is far more difficult to guess what was retained= by the owner of the originating utxo's unless the new change outputs are s= pent together in the same transaction.


Regards,

Damian Williamson

--_000_PS2P216MB0179FCA8077AAE946BFA2D069DD50PS2P216MB0179KORP_--