Secure your platform's growth
Onboard buyers and sellers with identity verification that caters to the complexity of marketplaces.
Secure your platform's growth
Onboard buyers and sellers with identity verification that caters to the complexity of marketplaces.
Safer interactions, smoother onboarding
Fourthline turns strangers into trusted buyers and sellers – in seconds.
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Create safer interactions
Verify every buyer and seller with high-confidence identity checks.
Tailor your onboarding
Customise checks for customer journeys based on value, geography, or risk profile.
Design an intuitive flow
Offer checks that lower friction, build trust, and form a secure customer experience.
Detect fraud early
Spot identity theft and AML risks to protect payouts and reduce financial losses.
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13.133 14.518 12.645 15.443 11.747 C 16.582 10.642 17.161 8.993 18.482 8.113 C 19.024 7.751 19.701 7.509 20.019 6.939 C 20.183 6.644 20.227 6.296 20.234 5.959 C 20.269 3.866 18.873 1.898 17.007 0.961 C 16.823 0.869 16.636 0.787 16.444 0.714 C 9.566 2.585 3.997 7.648 1.426 14.22 C 1.863 15.341 2.536 16.422 3.21 17.361 C 3.858 18.264 4.657 19.049 5.453 19.828 Z M 42.8 12.674 C 42.344 12.495 41.864 12.386 41.375 12.35 C 40.252 12.262 39.129 12.486 38.015 12.654 C 37.598 12.716 37.174 12.771 36.756 12.714 C 35.76 12.575 34.974 11.83 34.237 11.145 C 32.929 9.925 31.426 8.719 29.642 8.584 C 28.52 8.5 27.411 8.855 26.364 9.272 C 25.031 9.802 23.726 10.447 22.633 11.377 C 21.539 12.306 20.664 13.545 20.368 14.95 C 20.297 15.289 20.268 15.67 20.463 15.954 C 20.584 16.132 20.777 16.247 20.969 16.346 C 22.088 16.917 23.363 17.103 24.524 17.579 C 25.663 18.045 26.669 18.78 27.737 19.394 C 28.992 20.109 30.325 20.676 31.711 21.084 C 32.245 21.243 32.834 21.415 33.134 21.885 C 33.499 22.455 33.286 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Expand to new markets
Comply with GDPR, AML directives, and local regulations as standard.
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Automate for speed
Let AI handle 90% of verification cases so your ops team can focus on the exceptions.
Safer interactions, smoother onboarding
Fourthline turns strangers into trusted buyers and sellers – in seconds.
Create safer interactions
Verify every buyer and seller with high-confidence identity checks.
Tailor your onboarding
Customise checks for customer journeys based on value, geography, or risk profile.
Design an intuitive flow
Offer checks that lower friction, build trust, and form a secure customer experience.
Detect fraud early
Spot identity theft and AML risks to protect payouts and reduce financial losses.
Expand to new markets
Comply with GDPR, AML directives, and local regulations as standard.
Automate for speed
Let AI handle 90% of verification cases so your ops team can focus on the exceptions.
Why marketplaces choose Fourthline
99.98%
fraud detection accuracy
217
issuing countries
100%
lorem ipsum dolor
60s
average decision time
90%
automatic decision making
AI-driven
with seamless API integration
Why marketplaces choose Fourthline
99.98%
fraud detection accuracy
217
issuing countries
100%
lorem ipsum dolor
60s
average decision time
A robust identity layer for marketplaces
Let’s build the solution that suits your unique use case.
Identity Verification
Authenticate the identity of every buyer and seller with real-time, automated onboarding you can rely on.
Anti-money laundering
Stay a step ahead with 99.98% accurate fraud detection and AML monitoring with PEP, sanction, and adverse media checks.
Fraud detection
Spot stolen or synthetic identities before they make it onto your platform. Protect your brand and your customers.
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Digital Proof of Address
Verify addresses with a reliable and accurate analysis of meta data, geolocation, and customer identity.
A robust identity layer for marketplaces
Let’s build the solution that suits your unique use case.
Identity Verification
Authenticate the identity of every buyer and seller with real-time, automated onboarding you can rely on.
Anti-money laundering
Stay a step ahead with 99.98% accurate fraud detection and AML monitoring with PEP, sanction, and adverse media checks.
Fraud detection
Spot stolen or synthetic identities before they make it onto your platform. Protect your brand and your customers.
Digital Proof of Address
Verify addresses with a reliable and accurate analysis of meta data, geolocation, and customer identity.
Making conversion and compliance your strength
Making conversion and compliance your strength
Solutions
Solutions
Fourthline has been certified by EY CertifyPoint to ISO/IEC27001:2022 with certification number 2021-039.
Copyright © 2026 - Fourthline B.V. - All rights reserved.
Fourthline has been certified by EY CertifyPoint to ISO/IEC27001:2022 with certification number 2021-039.
Copyright © 2026 - Fourthline B.V. - All rights reserved.