The phrase "appear to block" is correct and usable in written English.
You can use it when describing a situation where something seems to obstruct or hinder progress or access.
Example: "The new regulations appear to block any further development in the area."
Alternatives: "seem to obstruct" or "seem to hinder".
Although Mr. Bryant's case was the only one before the commission, the ruling would appear to block several other former state legislators who are facing criminal charges from using their campaign reserves to defend themselves.
Davidson's second two principles appear to block such relevance.
The suppressors p19 from tombusvirus and p21 from Beet yellows virus appear to block silencing by directly binding siRNA, a critical mediator in the process.
In recent years the news media have trained a spotlight on angiostatin and its cousin endostatin, which appear to block cancer growth by stopping the birth of new blood vessels that nourish tumors.
We performed manual checks leading to the following results: Amazon allows outgoing packets with DF is one as well as incoming ICMP destination unreachable messages; Google filters all kind of ICMP messages with type is three (but letting others pass!), and both deployment models of Azure appear to block all kind of ICMP messages, see also Section 6).
Two officers appear to block the doors so they can't leave the building.
Again psilo-cybin appears to block that activity and stops this obsessive rumination".
But then it appears to block blood flow associated with the growth of new tumours.
It appeared to block chemicals that prevented cells from becoming nerve cells.
Eusebio pounced on the rebound and this time Pagliuca appeared to block the shot with his face.
Chinese customs officials appeared to block crucial exports to Japan of rare earths, which are metals vital to Japan's auto and electronics industries.
