1. providing evidence or proof of something; certifying as true or genuine
Usage: present participle of ‘attest’
2. serving as clear evidence of a quality or condition
Usage: present participle of ‘attest’

Examples

• The notary is attesting the authenticity of the document.
• Her success is attesting to years of hard work.
• The witness was attesting to what he saw that night.
• The certificate is attesting his completion of the course.
• The ruins are attesting to the city’s ancient glory.
• She is attesting the accuracy of the financial records.