System time as cookie/deanonymization?

Jason McVetta jason.mcvetta at
Wed Jul 27 03:55:52 PDT 2016

On Wed, Jul 27, 2016 at 3:58 PM, Georgi Guninski <guninski at>
> Getting very good approximation of system time from a browser is not
> very trivial, but likely writing something like NTP in javascript is
> doable.

Haven't tried it, but this JS library claims to return
microsecond-resolution system time in a vareity of browsers:
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/html
Size: 840 bytes
Desc: not available
URL: <>

More information about the cypherpunks mailing list