Step 1) cryo prison
Step 2) While they are in stasis, we develop mind prison technology, a virtual reality prison that uses a new developed technology allowing us to map their brains and upload their consciousness
Step 3) miniaturize mind prison, equip with an infinity drive, something something plutonium encased in 3" thick vibranium. Upload them into the mini mindprison, launch into deep space, the battery lasts 10,000 yrs, upon tampering it plays a recorded message explaining its purpose, then it wipes the memory, filling with random data 8 x 10^1024 times. Unless tampered, they cannot reincarnate for 10,000 yrs. Add solar power and extend this to 10B yrs
Step 4) call this mini mind prison virtual reality "the Phantom Zone" -- this is mandatory!
I propose another plan of action.
Step 1: Woodchipper with output exhaust going into cryogenic bath
Step 2: Cryogenic bath after proper freezing will shut down and vat of acid will then automatically drop to meld frozen remains with acid with special stirring ladle to ensure proper mixture
Step 3: After appropriate mixing, thermite dropped and ignited on top of it all
Step 4: Sealed and stored until Stacey Abrams, Shaye Moss, and Ruby Freeman are located
Step 5: Rocket ship with livestream and all of the above for experimental mission to the sun.