Security and Compliance for
Crypto Payment Systems

An enterprise playbook for the teams building and running crypto payments — covering the six-layer architecture, key management and signing security, global licensing, and on-chain AML/CFT.

Security and Compliance for Crypto Payment Systems Cover

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What you'll learn inside:

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Architect a Payment System That Holds Up

Break down the six layers of a crypto payment system (blockchain, wallet and custody, on/off-ramp, business logic, compliance, application), walk the pay-in and pay-out flows end to end, and decide between self-custody and third-party custody.
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Learn From $1.5B+ in Real Losses

Three incidents, three ways in: Bybit ($1.5 billion, supply-chain attack), UPCX ($70 million, leaked admin key), and MoonPay ($250,000, social engineering) — and why the attack surface moved from contract bugs to signing, custody, and people.
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Get Key Management Right

Separate the three orthogonal dimensions — authorization model (multisig vs. MPC/TSS), hardware protection (software / hardware wallet / TEE / HSM), and fund temperature (hot / warm / cold) — then apply the recommended hybrid architecture, signing-infrastructure isolation, and multisig operational standards.
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Close the Backend, Ops, and AI Agent Gaps

Harden transaction verification and blind-signing defense, API security and signing-environment isolation, DNS, identity and accounts, and the software supply chain — plus the new attack surface opened by AI tools and Agents.
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Navigate the Global Licensing Map

Tell payment licenses (U.S. MSB + state MTLs, EU MiCA CASP + EMI, Singapore MPI, Hong Kong MSO, UAE) apart from stablecoin issuance licenses, then build a license portfolio strategy and check yourself against the eight common compliance requirements.
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Build On-Chain AML/CFT and Freeze Defense

Deploy KYA (address risk screening), KYT (transaction monitoring), sanctions screening, and continuous monitoring; handle SAR/STR reporting and the real limits of the Travel Rule; and manage stablecoin freeze risk with tiered wallets — see how Phalcon Compliance puts it into production.