Tiers grade the distance between a claim and its paper trail. At the top, tier A sources are registries any outsider can pull up directly. At the bottom, tier E sources are Dmytro Verzhykovskyi's own sites, profiles and resumes. data index.
Source register
Every factual claim on verzhykovskyi.com cites a source from this register.
Source types
| Tier | Label | Description |
|---|---|---|
| A | Official registry | Government or standards-body registries an outsider can query directly: the California Secretary of State business registry, ORCID, DOI resolvers. |
| B | Indexed journal | Articles in journals with independent editorial process and external indexing (Web of Science ESCI, ICI Journals Master List, national library listings). |
| C | Independent press | Features and interviews published by trade and national media outlets. |
| D | Issuer-published listing or document | Public pages and certificates published by the organization that granted the award, membership or jury seat. |
| E | Self-published | Own sites and profiles, author-published platform posts and resumes. |
Full source register: 25 sources, tiers A to E
| Title | Publisher | Type | Lang | Tier | Notes |
|---|---|---|---|---|---|
| California Secretary of State business registry: Pinnacli LLC | California Secretary of State | registry | en | A | Pinnacli LLC, active, registered March 17, 2025. Search the registry for Pinnacli LLC. |
| ORCID record 0009-0003-2632-7757 | ORCID | registry | en | A | Researcher identifier printed on the Business Navigator article byline. |
| Integration of Virtual and Augmented Reality into Digital Marketing of the Luxury Segment | Business Navigator, Issue 1 (78), Ukraine | peer reviewed | uk | B | Sole-author article. DOI resolves. Journal listed in the ICI Journals Master List 2024 (ICV 64.30), double-blind review. ORCID 0009-0003-2632-7757 printed on the byline. |
| The Impact of Instagram on the Development of Small and Medium-Sized Businesses in Ukraine | Pacific Business Review International, Vol 17, Issue 8 (ISSN 0974-438X) | peer reviewed | en | B | Co-authored with four PhD economists from four Ukrainian universities. The journal is indexed in Web of Science Emerging Sources Citation Index. Exact article URL: see journal issue archive. |
| Content-Driven SEO Strategy for Luxury Brands: Finding the Balance Between Uniqueness and Search Optimization | Marketing in Ukraine, Ukrainian Marketing Association, No. 1-2 (135) | professional journal | uk | B | Sole-author article. ISSN 1606-3732, journal published since 1998, listed by the Vernadsky National Library of Ukraine. Exact article URL: see issue archive. |
| Секрети диджитал-успіху: як просувати люксові бренди за допомогою SEO та PPC | MMR.ua (Ukrainian marketing and communications trade outlet, registered online media R40-06226) | press interview | uk | C | Feature interview by the editor-in-chief. No advertising label. Trade outlet, not mass media. |
| ECDMA Global Awards 2025 winners page | E-Commerce & Digital Marketing Association (awards.ecdma.org) | award listing | en | D | Public winners page listing Dmytro Verzhykovskyi under Gold (Best SEO Professional) and Silver (Digital Marketing Professional of the Year). ECDMA was founded in 2023. |
| ECDMA Global Awards: Meet the Judges roster | E-Commerce & Digital Marketing Association (awards.ecdma.org) | award listing | en | D | Public jury roster listing Dmytro Verzhykovskyi with a self-authored bio. |
| Orpetron Web Design Awards judges roster and judge profile | Orpetron Web Design Awards | award listing | en | D | Public roster entry (Head of Digital Marketing at Antonovich Design). Judge profile at orpetron.com/user/verzhykovskyi/. The site homepage listed him in its Most Active Judges block in October 2025. |
| Ukrainian Marketing Association membership certificate No. 872 | Ukrainian Marketing Association (uam.in.ua) | issuer document | uk | D | Membership certificate issued January 3, 2025. UMA publishes the Marketing in Ukraine journal. |
| Semrush Academy certificates (three, 2026) | Semrush Academy | issuer document | en | D | Three issuer-hosted certificate PDFs, each valid one year from August 2026: On-Page SEO and AI Search Essentials with Semrush, International SEO, and Local SEO Essentials with Semrush. |
| LinkedIn Marketing Academy certifications (two, 2026) | LinkedIn Marketing Academy | issuer document | en | D | Marketing Measurement, and Content and Creative Design. Both completed August 9, 2026 and valid until August 9, 2028, each with an issuer verification page. |
| Google Skillshop certifications (public credential wallet) | Google Skillshop, issued through Accredible | issuer document | en | D | Public credential wallet published by the issuer. Eight current certifications issued August 16 and 17, 2026, each valid for one year and each with its own public verification page. Eight earlier certifications issued December 21, 2024 expired December 21, 2025. |
| ECDMA Senior Membership certificate and council decision | E-Commerce & Digital Marketing Association | issuer document | en | D | Senior Membership approved by the ECDMA Council on December 21, 2024. Issuer document; no public member directory is cited. |
| AdForum PHNX Awards 2025 jury participation | AdForum | award jury | en | D | Jury member from February 2025; voted in the second round, in which the medal winners were decided (organizer's letter of April 30, 2025). Documented through issuer emails and platform records. |
| The Independent Agency Awards 2026 judging platform record | The Independent Agency Awards | award jury | en | D | Round 1 judging, May 8 to 18, 2026; 26 evaluations completed. |
| What breadcrumbs do e-commerce sites need (68% of sites get them wrong) | Habr.com | publication | ru | E | Author-published research article on breadcrumb navigation in e-commerce, username verydima. |
| pinnacli.com | Pinnacli LLC (own company site) | official site | en | E | Own company site. Describes Dmytro Verzhykovskyi as a digital marketing strategist, Irvine, California contact. |
| seoexpertorangecounty.com | Own site | official site | en | E | Own local SEO practice site. States: Doing Search Engine Optimization Since 2012. |
| sextaris.com | Sextaris (own product) | official site | en | E | Keyword and search-demand intelligence SaaS he builds and operates. No public user or revenue figures exist. |
| LinkedIn profile | profile | en | E | Self-maintained professional profile. | |
| Habr author profile: verydima | Habr.com | profile | ru | E | Confirms authorship of the 2014 article. |
| Как изменить подход к digital-маркетингу люкс-брендов для увеличения продаж, рассказал эксперт | NUR.KZ | press interview | ru | C | Interview by Zarina Alieva. |
| Dmytro Verzhykovsky: Standard mass market solutions do not work in the premium segment | Focus.ua | press interview | uk | C | Interview by Daria Berezhna. |
| Professional resume of Dmytro Verzhykovskyi (2026) | Self | resume | en | E |