PROOF-OF-INDEX holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 42 (Science & Technology) with 1 filings. The WikiTrademarks Expansion Score is 4/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed August 2, 2026
Protect or track "PROOF-OF-INDEX"
Watch this name and we'll alert you when anyone files a similar mark.
Informational only, not a legal opinion. Consult a trademark attorney before filing or enforcing.
Own this brand? Claim the profile to add your logo, story, and website.
Sign in to claimHow is PROOF-OF-INDEX filing trademarks, and where is the portfolio expanding?
Filing Velocity (24 Months)
Filing Activity by NICE Class
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99330260 | PROOF-OF-INDEX | Aug 11, 2025 | Registered | 042 Science & Technology | Centrifuge Network Foundation, Inc. |
Weekly visibility reports showing how ChatGPT mentions PROOF-OF-INDEX, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: PROOF-OF-INDEX trademark portfolio
What trademarks does PROOF-OF-INDEX hold?
PROOF-OF-INDEX holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 42 (Science & Technology). The most recent filings are registered to Centrifuge Network Foundation, Inc..
How many trademarks does PROOF-OF-INDEX have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to PROOF-OF-INDEX. The brand has been actively filing since August 2025. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does PROOF-OF-INDEX file most often?
PROOF-OF-INDEX's most active class is NICE Class 42 (Science & Technology), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the PROOF-OF-INDEX trademark?
The most recent filings under the PROOF-OF-INDEX mark are registered to Centrifuge Network Foundation, Inc.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is PROOF-OF-INDEX expanding into new categories?
The current WikiTrademarks Expansion Score for PROOF-OF-INDEX is 4 out of 100, which is low — the brand is focused on defending its existing categories rather than expanding. The score combines NICE class breadth, filing velocity, and the rate of cross-class movement from the brand's filing history.
How can I track new PROOF-OF-INDEX trademark filings?
Click the Watch Brand button at the top of this page to add PROOF-OF-INDEX to your Watchlist. New filings show up on your WikiTrademarks dashboard within 24 to 48 hours of being public, alongside any class expansions, status changes, or assignment events.
More on this portfolio: Compare PROOF-OF-INDEX to another owner · Browse all NICE classes · Most valuable brands
Community notes
0 notesShare what you know about PROOF-OF-INDEX and help the next person researching it.