The phrase "attested as being" is correct and usable in written English.
It can be used when referring to something that has been confirmed or verified as existing or being true.
Example: "The ancient manuscript was attested as being authentic by several experts in the field."
Alternatives: "verified as" or "confirmed to be".
Supernatural themes, songs of banditry, songs of a hero's return, and a variety of other traditional subjects are attested, as are historical songs, which can while using the traditional language treat events as recent as conflicts in the 1990s.
Historically, there have also been a number of alternative forms of the name including Lihoumel, which was attested as early as the twelfth century, and Lehowe, which was mentioned in the sixteenth century.
His cult is attested as early as about 2500 bc, and, according to texts found at Ras Shamra (ancient Ugarit), he was the father of the god Baal.
In northern Syria the god of war Astapi and the goddess of oaths Ishara are attested as early as the 3rd millennium bce.
Similar examples exemplifying the structures given in 1 and 2 are attested as early as Old High German (750 1050) (examples adapted from Axel-Tober, this issue).
The basic design of the flag was used by a Latvian militia unit in 1279, as is attested in a 14th-century manuscript known as the Livländische Reimchronik ("Livland Rhyme-Chronicle").
Coastal dwellers have long exploited these rich resources, as is attested by numerous fish remains (e.g., Badenhorst et al. 2011; Fleisher 2003; Horton and Mudida 1993, in press; Quintana Morales 2013; Quintana Morales and Horton 2014; Van Neer 2001).
Humbert, whose origins are surrounded by controversy but who may have been the son of the semilegendary hero Bérold of Saxony, ally of King Rudolf III of Burgundy, is attested as a count in Burgundy and was prominent at Rudolf's court.
As can be attested as the winner of such an award, it is a vital contribution to literature of analysis not only because it presents a detailed account of the recent developments in the field, but also because the book is accessible to anyone with a basic level of understanding of analysis.
It operates its own isolated memory address space, running on a separate CPU, all of which may be attested as operating within the strictly controlled environment provided by the issuing enterprise (which may be a cloud service provider).
