[FIG(quote)[
[FIGCAPTION[
[1] [CITE[Official Document RCC.71 - RCS Universal Profile Service Definition Document]]
([TIME[2017-07-12 18:57:42 +09:00]])
<https://www.gsma.com/futurenetworks/wp-content/uploads/2017/07/RCC.71_v2.0.pdf#page=248>
]FIGCAPTION]

> rcs-chat:<groupid>?users=<encoded list of users separated by comma> 
> If the list of users contains the current user, it has to be marked with a special parameter
> “self=true”. 

]FIG]


[FIG(quote)[
[FIGCAPTION[
[2] [CITE[Official Document RCC.71 - RCS Universal Profile Service Definition Document]]
([TIME[2017-07-12 18:57:42 +09:00]])
<https://www.gsma.com/futurenetworks/wp-content/uploads/2017/07/RCC.71_v2.0.pdf#page=249>
]FIGCAPTION]

> When anonymizing a Group Chat URI, any single user in the group shall be anonymized.
> Example of an anonymized group address:
> rcschat:12345?users=tel%3A%252B123456789%3Falias%3DGoofy%26self%3Dtrue,tel%3A%
> 252B123456788%3Falias%3DSpooky,tel%3A%252B123456787%3Falias%3Wooky
> becomes
> rcschat:12345?users=tel%3A<HASH>%3Falias%3DGoofy%26self%3Dtrue,tel%3A<HASH>%3F
> alias%3DSpooky,tel%3A<HASH>%3Falias%3Wooky

]FIG]