Rod Culleton update from Manolini farm 17 days in

Altering a title is a criminal offence. Will add the relevant sections here shortly.
As for disposing of titles:
Criminal Code Act Compilation Act 1913 (WA) Criminal Code Acts are similar in each State and Territory.

Chapter XXXVII — Offences analogous to stealing

379.Concealing official register

Any person who, with intent to defraud, conceals or takes from its place of deposit any register which is authorised or required by law to be kept for authenticating or recording the title to any property, or for recording births, baptisms, marriages, deaths, or burials, or a copy of any part of any such register which is required by law to be sent to any public officer, is guilty of a crime, and is liable to imprisonment for 14 years.

Alternative offence: s. 424.

[Section 379 amended: No. 51 of 1992 s. 16(2); No. 70 of 2004 s. 36(3).]

380.Concealing will

Any person who, with intent to defraud, conceals any testamentary instrument, whether the testator is living or dead, is guilty of a crime, and is liable to imprisonment for 14 years.

[Section 380 amended: No. 51 of 1992 s. 16(2).]

381.Concealing certificate of title etc.

Any person who, with intent to defraud, conceals the whole or part of any document which is evidence of title to any land or estate in land is guilty of a crime, and is liable to imprisonment for 3 years.

[Section 381 amended: No. 51 of 1992 s. 16(2).]