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Downtown Grading | Top Authentication and Grading Company — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Collecting →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
pixelvaulttrading.com ↗	69 match 1 shared topics	Pixel Vault Trading Company	en	collecting	robotsllmsaihumans	emailphone	none
baseballcardroadshows.com ↗	67 match 1 shared topics	Baseball Card Grading Experts \| Get Top Value Fast	en	collecting WordPress	robotsllmsaihumans	email phone	none
3ctradingco.com ↗	66 match 1 shared topics	3C Trading Co	en	collecting	robotsllmsaihumans	emailphone	none
barnburnerrelics.net ↗	66 match 1 shared topics	BARN BURNER RELICS INC. \| We Buy & Sell Authentic Arrowheads and Relics	en	collecting Squarespace Magento	robotsllmsaihumans	emailphone	none
adamstrading.co.uk ↗	66 match 1 shared topics	The Adams Trading Company – Collectables Curios and Curiosities	GB en	collecting WordPress WooCommerce	robotsllmsaihumans	emailphone	none
4sharpcorners.com ↗	65 match 1 shared topics	Consign, buy and sell your trading card collection with 4 Sharp Corners	en	collecting BigCommerce	robotsllmsaihumans	emailphone	none
4sharpcornersconsignment.com ↗	65 match 1 shared topics	Consign, buy and sell your trading card collection with 4 Sharp Corners	en	collecting BigCommerce	robotsllmsaihumans	emailphone	none
awauthentic.com ↗	65 match 1 shared topics	:: AW Authentic ::	en	collecting	robotsllmsaihumans	emailphone	none
luxury-appraisals.com ↗	65 match 1 shared topics	Luxury-Appraisals.com – The Best Luxury Appraisals & Authentication	en	collecting WordPress	robotsllmsaihumans	emailphone	none
draftpickccc.com ↗	65 match 1 shared topics	Draft Pick Cards, Comics & Collectibles \| Buy and Grade Cards Online	en	collecting	robotsllmsaihumans	emailphone	none
ctrlcollectibles.com ↗	64 match 1 shared topics	Ctrl Collectibles \| Singapore-based Trading Card Marketplace, Auctions & Vault Storage	SG~ en	collecting	robotsllmsaihumans	emailphone	none
4k-legends.com ↗	64 match 1 shared topics	P4-K3 Fabrications – 4K Legends	en	collecting Shopify	robots llmsaihumans	emailphone	none
4klegends.com ↗	64 match 1 shared topics	P4-K3 Fabrications – 4K Legends	en	collecting Shopify	robots llmsaihumans	emailphone	none
ctrlcards.com ↗	64 match 1 shared topics	CTRL BREAKS - The ultimate website for breaks, trading cards and boxes – CTRL CARDS	en	collecting Shopify	robots llmsaihumans	emailphone	none
naleg0o.com ↗	64 match 1 shared topics	NaLeG0o 1.0 - NFT Trading Card Marketplace	en	collecting	robotsllmsaihumans	emailphone	none
discmandays.com ↗	64 match 1 shared topics	Discman Days - Buying and Selling CDs	en	collecting	robotsllmsaihumans	emailphone	none
disdocs.app ↗	64 match 1 shared topics	DisDocs - The Ultimate Vinyl Collection Companion	en	collecting	robotsllmsaihumans	emailphone	none
lumavexauthentic.com ↗	64 match 1 shared topics	LumaVex \| Premium Trading Cards & Anime Collectibles	en	collecting WordPress WooCommerce	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.