This is an interesting case worth following
We don't know if he is alive or not.
He left some unique things. Using those things we can verify the account owner.
He has a website that is still up but not updated.
https://tomostasks.website/ (Nudity inside)
The website redirects to
gaysfinder.life (NSFW) I am not sure if that was the owner's intention

He also signed a message from His Bitcoin wallet.
-----BEGIN BITCOIN SIGNED MESSAGE-----
I am tomos81 and asking CasioK for a loan of 0.015BTC for 7 days. I am offering my BCT account as collateral. I will repay 0.018BTC.
-----BEGIN BITCOIN SIGNATURE-----
Version: MultiBit HD (0.5.1)
Comment:
https://multibit.orgAddress: 1DnWG7sL7yWekSS11nZsNNnxyWrwtHNYRs
H5wRNPy+rwHpZREzzu1sdKtm9kwzg6/dtw9Fnrmpz16yCFXf9csHPvR3cQPZrkeur7FHRGPl4kcVvYiO5F9gSpo=
-----END BITCOIN SIGNATURE-----
To prove that he is the original owner of the account, he should be summoned to sign a message from this address or else I think it will be safe to assume the account changed hands
Seems like he was accepted on the Stake Signature Campaign. But, I was unable to find a Spreadsheet of signature campaign participants.
@
Carollzinha, Would you mind letting me know if he was accepted or not?
I have seen the spreadsheet and can confirm that he was accepted in the signature campaign.