Build High Authority Backlinks

Hi,

I am looking for some to create high authority backlinks for my technology and digital marketing niche website.

Basic Requirement: DA and DR 50+, Contextual backlinks on our given anchor text. Backlink inserted on unique content.

All backlinks must indexed in google webmaster and ahrefs. All backlinks must be safe and less spam score less then 5%.

Please come with any sample and all basic details.

Thanks