Both accounts have edited Handball - Rpo.castro's edit and Scblaster's edit. Also, Rpo.castro is editing in Scblaster's sandbox here - Sandbox AND his own Sandbox with the same content Sandbox at the same identical time. Both accounts edit Portuguese related soccer articles like S.C. Braga. It is my belief that these accounts are the same person. JMHamo (talk) 16:36, 19 February 2014 (UTC)
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I have also added an IP address I suspect he might have used when he took a dislike to my opinion in an AfD and lauched a mass PRODding / Revert attack against articles I had created / edited, as outlined in the AN/I here. Fenix down (talk) 17:01, 19 February 2014 (UTC)
Rpo.castro is probably from Braga, Portugal (his editing is related to S.C. Braga, roller hockey, association football, and sometimes F.C. Porto). 89.152.188.132 is an IP from Braga. IP started vandalizing Wikipedia and harassing me at 20:33, 24 January 2015. Rpo.castro started editing exactly one hour later (21:33, 24 January 2015). What is the connection? If you check the history page of Talk:List of unrelegated association football clubs, you see a known disruptive user (reported at ANI) but that user utilizes IPs from Lisbon, not Braga. Rpo.castro and I had some issues before (see Rui Barros, F.C. Porto player), so it might be possible that Rpo.castro is/was 89.152.188.132 and is trying to trick me by pretending that he is the other blocked user. At first I was thinking about reporting suspect user Tesd52 (recently blocked, see F.C. Porto). It is one of those Portuguese users. SLBedit (talk) 23:03, 24 January 2015 (UTC)
Previous harassment: 1 (IP from Lisbon). Harassment and vandalism with new IP: 1, 2, 3, 4, 5 (IP from Braga).
"but there are no edits for the master on the 24th" means the edit was deleted because the article or template was deleted. I copy/pasted the time and date of the edit! SLBedit (talk) 08:45, 1 February 2015 (UTC)
Accused parties may also comment/discuss in this section below. See Defending yourself against claims.
Clerk note: @SLBedit: I need diffs comparing the master and the IP. For example, you talk about the IP starting to vandalize you, whatever that means, with a time but without a diff (there are three edits at that time). You say the master started one hour later, but there are no edits for the master on the 24th.--Bbb23 (talk) 00:21, 1 February 2015 (UTC)