So then you need to know distance / roundtrip-length within centimeter precision as well (below 29.98 cm for sub-nanosecond precision… to be precise).

Since cm precision is often not possible, is roundtrip-length an estimated average from prior roundtrips?

The roundtrip time is measured and compensated. Even NTP does this. Knowing the distance is not necessary for time synchronization.

gPTP estimates the link delay and the peer clock ratio, see for example this random link I just found for you: https://blog.meinbergglobal.com/2024/03/27/what-is-gptp/

Hmm one would expect heat expansion to change the length of fiber over tens of kilometers. Does it also affect light speed in the fiber? I think consumer fiber is not buried very deep on average, but maybe for these use cases you use something hefty anyway.

It doesn't matter if the length changes provided:

* you measure the round trip time often enough

* the shift affects light in both directions equally

delay is easy

jitter kills

... why would cm precision be often not possible?

Because you're using fibres laid years ago. Often pulse velocity isn't known to better than one part in 1000.

Then, since it’s about publishing (emails), they should have picked

e-mprimatur

(⌐⊙_⊙)

It is not

Source: own multiple, via EU registrar

(Edit: Parent was edited after reply - parent statement is now correct)

Registering a .com through a EU-based registrar doesn't change anything.

Verisign, the organisation that actually controls the .com top-level domain, is a US company and operates under US jurisdiction.

Where you purchase the domain from is irrelevant.

That… is true - thanks for editing your comment to clarify

The initial thread read like “.com domains are exclusive to US” which they of course aren’t

It's a bit like .gov and .edu; technically exclusive to the US. The difference is that .com and .org were opened up for anyone to purchase.

And it goes deeper than just intent: .com was literally administered under a US government contract for decades, with Verisign only ending up in control because they acquired the company that held that government contract.

So while anyone can buy a .com today, the infrastructure and oversight have always been firmly American.

you do not really own a domain

“Security through obscurity” has the connotation that it is the obscurity that achieves the security - which is bad.

”Security including obscurity“ is fine.

Yeah, I always thought that real security is priority #1. But, using convenient obscurity lowers the obvious attack surface to things like automated scanners, just a bit.

Yes it’s not that it’s bad, it just means you aren’t done yet

Would you have any more info? I have both: adobe synctool + issues with smb shares

Such a great personal project!

These kind of things is what the ‘www’ was created for - good vibes!

Why riddle it with ads?

It’s an expensive hobby on top of server / service costs to run the site?

Source: myself through wife which is maxed on chickens and has her own site with no ads

It should be profitable from just the eggs (source also wife) unless you're overpaying for server costs

Fair.

And I my point was I really like the site!

I promise to become lessvocal about the ads.

> Are you sure it's a DDoS and not just a DoS?

I think these days it’s ‘DAIS’, as in your site just DAIS - from Distributed/Damned AI Scraping

It’s only bad if you’re a closed, for-profit entity

</sarcasm>

Was that sarcasm? Speaking of it, what parts of OpenAI are still open?

I know, always hard to tell on HN. Added the relevant declarative tag

The front door…

You’re calling people who critique Palantir “borderline Q-Anon” ?

While you yourself think Palantir’s products are “like Excel” ?

They are not. Source: https://www.theguardian.com/news/2026/mar/26/ai-got-the-blam...