How we protect info, when time paradox happens ?

when info overwritten

   1⃣ time paradox
   2⃣ when 2 world string merges
   3⃣ when graviton overwritten
   4⃣ when something happens to what gathers world string with gravity 
   5⃣ when attack from evil livings, in other world string

what info, necessary to check overwitten ?

   1⃣ wiki
   2⃣ recent news 
   3⃣ TV program 
   4⃣ outcome of superimportant investigations

suggestions

   1⃣ blackhole, heavy player, heavy service, save some of information, because they pull info
   2⃣ common truth, more stable to remain in public, when info overwritten (by attack, or accident).