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Proof of Key — Cryptographic Identity Verification | proofofkey.com — 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 Information And Network Security →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
tosiname.com ↗	70 match 1 shared topics	Identity verification for online accounts	en	information-and-network-security	robotsllmsaihumans	emailphone	none
onescrinid.com ↗	70 match 1 shared topics	OneScrinID \| SSO, KYC & Identity Verification Platform	en	information-and-network-security	robotsllmsaihumans	emailphone	none
mccidentity.com ↗	69 match 1 shared topics	MCC IDENTITY – Biometric Identity Verification for Government & Enterprises	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cryptonid.tech ↗	69 match 1 shared topics	Crypton \| Identity Redefined	en	information-and-network-security	robotsllmsaihumans	emailphone	none
sprime.io ↗	69 match 1 shared topics	SPRIME - PROOFGATE private age and eligibility verification	en	information-and-network-security	robotsllmsaihumans	emailphone	none
entrance.be ↗	68 match 1 shared topics	Cryptona.be - Cryptographic Cyber Security Solutions	Belgium en	information-and-network-security	robotsllmsaihumans	emailphone	none
0rei.one ↗	68 match 1 shared topics	0REI \| Immutable Cryptographic Evidence Infrastructure	en	information-and-network-security	robots llmsaihumans	emailphone	none
crysm.net ↗	68 match 1 shared topics	Cryptographic Hashing & Security Tools \| CrysM.net	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
copidverify.com ↗	68 match 1 shared topics	COPID — Age Verification API \| Privacy-first	en	information-and-network-security	robotsllmsaihumans	emailphone	none
impryn.com ↗	66 match 1 shared topics	Impryn \| Permanent Proof of Existence Timestamps	en	information-and-network-security	robotsllmsaihumans	emailphone	none
onetoid.com ↗	66 match 1 shared topics	12iD Next-gen identity management	en	information-and-network-security Squarespace Magento	robotsllmsaihumans	emailphone	none
7-slots-protection.online ↗	66 match 1 shared topics	Brand Integrity & Verification Resource — 7-slots-protection.online	en	information-and-network-security	robotsllmsaihumans	emailphone	none
cryptoquantumsafe.com ↗	66 match 1 shared topics	QuantumSafe \| Post-Quantum Cryptography Solutions	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
bahaaabdulhadi.com ↗	66 match 1 shared topics	Bahaa Abdul Hadi, Biometric Identification & Authentication Expert	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
cryptomathic.com ↗	66 match 1 shared topics	Cryptomathic: Empowering Secure Cryptographic Solutions	en	information-and-network-security HubSpot	robotsllmsaihumans	emailphone	none
0dq.io ↗	66 match 1 shared topics	0 Day Quantum - Post-Quantum Cryptography Readiness	en	information-and-network-security	robotsllmsaihumans	emailphone	none
arpanetwork.io ↗	66 match 1 shared topics	Secure Computation Network for Blockchain-adapted Cryptography \| ARPA	en	information-and-network-security	robotsllmsaihumans	emailphone	none
3sters.com ↗	66 match 1 shared topics	3sters - Professional Verification Services	en	information-and-network-security	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.