That's not independent verification; it's not even vaguely close to independent verification.
"Even if Rossi did some screwy stuff, it cannot explain the 1.5 MWh gain for more than 32 days"
Sure, he could have literally hacked the instruments. But, 1.5 MWh over 32 days is a fairly small amount of energy as in 2kW * 32 days a lot of chemical processes can get you there. Also, measuring heat output is really easy to mess up. Something as simple as putting an insulating blanket under the device could significantly alter the measurements. The point is he was there when they were setting up the experiment so he could have easily lead them astray.
PS: As to warrants further research nope, sorry the correct response is to declare this a clear scam.
"Even if Rossi did some screwy stuff, it cannot explain the 1.5 MWh gain for more than 32 days"
Sure, he could have literally hacked the instruments. But, 1.5 MWh over 32 days is a fairly small amount of energy as in 2kW * 32 days a lot of chemical processes can get you there. Also, measuring heat output is really easy to mess up. Something as simple as putting an insulating blanket under the device could significantly alter the measurements. The point is he was there when they were setting up the experiment so he could have easily lead them astray.
PS: As to warrants further research nope, sorry the correct response is to declare this a clear scam.