Block illicit funds in real-time and meet global compliance standards. Build trust in every transaction.
Screen all incoming and outgoing funds with real-time KYT/KYA.
Instantly identify high-risk counterparties and sanctioned addresses.
Ensure global compliance and prevent illicit fund flows automatically.
Intercept and flag suspicious transactions before you process them.
Apply smart, tiered controls instead of disruptive, one-size-fits-all rules.
Keep the users’ experience seamless for legitimate transactions.
Block withdrawals to sanctioned or known high-risk addresses without manual intervention.
Regularly re-screen counterparties to adapt to emerging threats.
Prevent users from using your platform as an exit point for illicit funds.
Show regulators clear visual proof of illegal fund movements. This evidence helps meet compliance requirements.
Streamline STR reporting. Speed up complex on-chain investigations for global compliance.
Enable Secure and Compliant Crypto Payments
“Partnering with BlockSec has significantly strengthened the security of our platform. Real-time deposit and withdrawal risk management has prevented numerous high-risk transactions. BlockSec’s solution not only improved our compliance capabilities but also preserved user experience—critical for our long-term growth. ”

Zcash Orchard Soundness Bug Analysis | BlockSec Weekly
During the week of June 1, 2026, a critical soundness vulnerability was publicly disclosed in Zcash's Orchard shielded pool circuit, caused by a missing equality constraint in the halo2 ECC scalar multiplication gadget that could have enabled undetectable counterfeiting of ZEC within the Orchard pool through double-spending. The vulnerability, which existed for over four years since Orchard's activation in May 2022, was discovered by an AI-assisted security audit and patched through an emergency network upgrade (NU6.2). This single-event report covers the technical root cause (under-constrained ZK circuit relation), the AI-assisted discovery by researcher Taylor Hornby using Anthropic's Opus 4.8 model, the emergency response timeline, and the broader implications for the ZKP ecosystem.

VASP Guide: Engineering a Crypto Compliance Software Stack from Scratch
Engineering guide for VASPs building a crypto compliance stack from scratch. Covers KYT pipelines, multi-jurisdiction STR and SAR reporting, automated risk scoring, cross-border API sync, and one-click regulatory filing.

DeFi Compliance Platform Requirements: Building an On-Chain Risk Stack
A technical guide for DeFi protocol teams building an on-chain compliance platform. Covers DeFi-specific stack requirements, real-time KYT, cross-chain tracing, behavioral risk scoring, alert-to-report workflow, and common operational failure points.
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