A zero-knowledge verification layer for safer, high-trust online platforms and marketplaces.
BBuild trusted platforms without becoming a data vault
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Age verification
Confirm age thresholds for games, dating, regulated content, and restricted goods delivery using zero knowledge proofs instead of ID uploads, while your systems log verifiable evidence that the correct policy checks were executed on authenticated data. -
Real-person and verified profile checks
Prove that an account belongs to a real, vetted person by combining credential based identity with non interactive proofs over fraud and risk databases, so trust badges reflect mathematically verified checks rather than manual reviews. - Portable reputation credentialsLet users carry ratings, completed jobs, and trust scores across marketplaces as cryptographically signed credentials, and verify reputation with SQL style constraints over your historical data, gaining strong integrity guarantees without sharing or centralizing raw activity logs.
Tackle marketplace challenges
- ComplianceMeet evolving age and identity verification requirements with zero knowledge proofs and verifiable logs of the exact policy and database checks that were run, without turning your platform into a warehouse of documents or bulk exports.
- Fraud preventionBlock fake profiles, repeat abusers, and multi account farms using hard to forge credentials bound to real world identities, together with non interactive proofs that risk and sanctions queries actually executed on your committed fraud and abuse datasets.
- User experienceOffer one tap checks that feel native to your product. Behind the scenes Zakapi runs SQL style verification over your data and returns a simple yes or no proof, so users see a smooth flow instead of long forms or manual uploads that cause drop off.
- Data securityMinimize stored PII and lower breach impact by relying on reusable cryptographic proofs and verifiable query results instead of ID scans and raw logs, keeping sensitive records in the systems that already protect them while your platform only sees outcomes.
Online Platforms & Marketplaces
Challenges: Online platforms - social networks, marketplaces, dating sites, gig apps - need to verify user attributes for safety and compliance, such as age for regulated content and delivery, identity for fraud prevention, and trust signals like verified badges and reputation tiers. They must do this without turning every signup into a document upload funnel or becoming a central vault of passports and IDs. At the same time, safety and risk teams rely on internal databases for abuse history, sanctions hits, chargebacks, and device fingerprints, yet have no cryptographic way to prove that checks were actually run on the right, up to date data.
Zakapi for Online Platforms: Zakapi provides plug and play verification widgets and a verifiable data layer that let platforms request zero knowledge proofs for age, identity and reputation, while also producing non interactive proofs that supporting SQL style checks over safety and risk databases were executed correctly against committed datasets. You get simple, policy aware yes or no answers, your teams keep their existing data and workflows, and users never have to hand over raw documents or give every site a copy of their ID.
Age Verification
Whether you are a gaming platform enforcing minimum ages, a delivery marketplace checking legal drinking age, or a content site complying with child protection laws, Zakapi can convert age checks into privacy preserving proofs plus verifiable policy queries. Your frontend sends a "prove age ≥ X for this jurisdiction" request through our widget or SDK. The user’s Zakapi wallet selects an appropriate credential such as a national ID or age token, generates a zero knowledge proof of the age bound, and shares it. In parallel, Zakapi can run a SQL style policy check against your committed rules database, such as "is X the current minimum age for this country and content type", and return a non interactive proof that the right rule set was used. You receive only a true or false result and the associated proofs, never birthdates, names or ID numbers.
Identity Verification and Verified Badges
If your marketplace or community wants verified profiles without becoming an identity processor, Zakapi lets users prove they have a real, vetted identity once and then reuse that assurance. A user can obtain a credential from a bank, government eID, or KYC provider that states "holder’s government ID is verified and not on a fraud or sanctions list". When they sign up or upgrade their account, your platform requests a proof derived from that credential and, optionally, SQL style checks over your own fraud and abuse tables, such as "no prior bans under this device fingerprint". You surface a "Zakapi verified" or platform specific badge while underlying identifiers stay with the user and sensitive risk databases stay inside your environment, backed by proofs that the right checks ran.
Reputation and Reviews
Zakapi can turn on platform and cross platform reputation into portable, cryptographically signed credentials. For example, a freelancer might hold a credential that encodes "500 hours worked and 4.9 average rating on Platform A" or "over 100 completed rides with no safety flags on Service B". When joining a new marketplace, they can present a zero knowledge proof that their completed jobs, rating, or trust score exceed your thresholds without disclosing every detail. Where needed, Zakapi can also generate non interactive proofs that those aggregates match SQL style queries against a committed slice of your historical data, such as "count(completed_jobs) ≥ 100 and avg(rating) ≥ 4.5", giving you cryptographic assurance that reputation numbers were computed correctly and from authentic data.
Content Creator Verification and Compliance
For platforms hosting user generated content, especially monetized or regulated content, Zakapi helps you satisfy KYC, age, and AML style requirements without exposing creators’ full identities to the public. Creators complete one time verification to obtain credentials such as "creator is over 18 and ID is verified" or "creator has passed enhanced due diligence for payouts". When they publish or monetize, you request zero knowledge proofs from those credentials along with verifiable SQL style checks over your compliance databases, such as screening logs and payout risk scores. The public sees a pseudonymous handle and a verified creator badge, while you hold cryptographically verifiable evidence that legal obligations were met and that checks used the right rules and datasets at the time.
Fraud Prevention
Because Zakapi credentials are issued and signed by trusted institutions and backed by zero knowledge proofs, they are extremely hard to forge. A scammer spinning up multiple accounts can no longer rely on throwaway emails and photoshopped IDs. You can require strong proofs at key points such as onboarding, listing creation, or high risk actions, tying those proofs to device identifiers and your internal risk scores. Zakapi lets you encode policies like "no previous chargebacks", "no prior bans in abuse_log", or "no matches against internal sanctions list" as SQL style predicates and then attach non interactive proofs that those predicates were evaluated correctly over your committed risk database. This makes it much harder for bad actors to re enter under new accounts and gives trust and safety teams verifiable evidence of enforcement.
User Experience and Conversion
Zakapi is built to keep verification flows fast and native to your product. Users encounter a simple "Verify with Zakapi" button or embedded widget, scan a QR code or approve a request from their wallet, and receive instant feedback that they are cleared to proceed. Behind the scenes, non interactive zero knowledge proofs replace multi step back and forth checks, and SQL style verification runs in your back end without slowing the interface. That means fewer abandoned signups at age gates, fewer drop offs during identity upgrades, and a smoother path into higher trust features such as payouts, hosting, or advanced trading.
Value Proposition for Platforms
With Zakapi, you can comply with age and identity verification requirements, raise safety and trust, and support portable reputation while avoiding the cost and liability of being a data warehouse. Sensitive records stay in the systems that already protect them. Your safety and compliance teams define policies as SQL style conditions over those datasets, Zakapi generates non interactive zero knowledge proofs that those conditions were satisfied, and your product surfaces only the outcomes that matter. The result is a safer, higher trust community where verification is mathematically provable, user friendly, and privacy respecting instead of paperwork heavy and risk laden.
Build safer communities with Zakapi badges
- Zakapi verified badgesAdd Zakapi verified markers to profiles to show that key checks such as age, real ID, or fraud screening have been cryptographically confirmed using non interactive proofs, not screenshots or manual reviews.
- Community trustEncourage genuine interactions by helping users quickly see who has passed Zakapi checks. Each badge is anchored in cryptographic commitments to your policy and sanctions datasets, so buyers, sellers, and creators can trust that the same rules were applied consistently.
- Risk reductionLower the chances of scams, fake accounts, and chargebacks by requiring proofs from trusted credentials and backend SQL style checks that are verifiably run on authenticated data, rather than relying on self declarations or uploaded images.
- Compliance made easierMeet evolving safety and KYC style requirements with reusable, log friendly proofs that regulators and auditors can reverify later, while avoiding the need to store sensitive identity data yourself or rerun queries on production databases.
Keep creators and sellers compliant
- Regulatory adherenceUse Zakapi proofs to satisfy KYC, age, and seller verification requirements without turning into a data processor of full documents. SQL style compliance rules are compiled into non interactive proofs against committed datasets so you can show that checks were run correctly without exposing the underlying tables.
- Risk mitigationLower legal and operational risk with cryptographically verifiable checks on who is publishing, selling, or getting paid. Each proof is tied to a specific policy and a committed view of your seller, payout, and sanctions databases so you can later demonstrate that the right data and rules were used at the time of onboarding or payout.
- Enhanced user experienceLet creators and merchants verify once via their Zakapi wallet and reuse their credentials and policy proofs across listings, products, and partner properties, which reduces friction when onboarding or monetizing while keeping identity and financial details private.
- Fraud preventionMake it harder for bad actors to open duplicate or fake seller and creator accounts by requiring proofs backed by real credentials and verifiable SQL style checks on sanctions lists, chargeback history, or device risk, instead of relying on screenshots or self declarations.
Empower with portable reputation
- Risk mitigationReduce risk from new or unknown accounts by requiring signed, tamper evident reputation credentials backed by committed activity logs and zero knowledge proofs that key metrics were computed correctly.
- Faster onboardingLet proven sellers and creators reuse their verified reputation and policy proofs so they can start listing, hosting, or trading in minutes instead of days, without repeating manual checks.
- Streamlined complianceSupport platform policies and regulatory checks with cryptographically signed summaries of jobs, ratings, and disputes, using SQL style rules over your underlying data without exposing raw review or transaction records.
- Enhanced user experienceRecognize trusted users immediately, boost match quality, and increase engagement and conversion by showing portable reputation signals that can be verified in a single click while keeping personal details private.
Disrupt fraud, strengthen your community
- Fewer fake accountsFilter new registrations through verified credentials and zero knowledge checks so bots and fabricated profiles struggle to satisfy identity and risk rules in the first place.
- Harder account farmingBind accounts to cryptographically verified identities and SQL style policy checks over committed activity data, so each real person can only sustain a limited, policy compliant set of accounts. This weakens farmed profiles and mass sign up attacks.
- Reduced repeat abuseLink enforcement actions and risk scores to verifiable identity proofs instead of fragile device fingerprints. Non interactive proofs over your history tables make it much harder for bad actors to return under fresh accounts while keeping underlying records hidden.
- Stronger trust signalsShow your community that key checks such as age, identity, and reputation have been cryptographically verified. Users see clear trust badges and consistent behavior flags, increasing confidence in listings, matches, and peer to peer transactions.
PPrioritize privacy and compliance
- Minimal data collectionRequest only the attributes you need, such as age or “real person”, while full identity details and underlying records stay on the user’s device or in your protected databases.
- Cryptographic proofsRely on zero knowledge style, non interactive proofs for age, identity, reputation, and SQL style policy checks over committed datasets, receiving clear yes or no answers instead of raw documents or query results.
- Audit-friendly logsMaintain concise logs of each verification and backend check, including proof identifiers and commitments, so risk, trust and safety, and compliance teams can later re verify correctness without accessing underlying personal data or rerunning queries on live systems.
- Compliance alignmentSupport evolving KYC, age verification, and platform safety regulations, as well as data protection laws, with a privacy by design model that combines data minimisation, verifiable policy enforcement over your databases, and cryptographic evidence suitable for regulators and external auditors.
hello@zakapi.com
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