From L. attestari|attestÄri "to bear witness" + -ed
#proven|Proven; shown to be true with evidence
#supported|Supported with testimony
#certified|Certified as good, correct, or pure
#*1599 â w:Shakespeare|Shakespeare, s:Twelfth Night|Twelfth Night v 1 (First Folio edition)
#*:A Contract of eternall bond of loue,<br>Confirm'd by mutuall ioynder of your hands,<br>AtteÅ¿ted by the holy cloÅ¿e of lippes,
- Simple past and past participle of to attest.