Crypto platforms operating across markets face different AML rules but one shared expectation: screen transactions, not just identities. Know Your Address (KYA) is the address-level control that maps to that shared expectation across FATF, FinCEN, MiCA, and Hong Kong's stablecoin framework. This page is part of the AML Compliance Hub and focuses on how KYA satisfies real-world regulatory obligations. It does not define KYA or cover the deployment mechanics, which have their own pages.
KYA Compliance Requirements, What Regulators Expect from Crypto Businesses
Regulators across FATF-aligned jurisdictions require three core AML program elements: customer due diligence (who is transacting), transaction monitoring (screening activity for laundering and sanctions-evasion patterns), and suspicious activity reporting (escalating flagged transactions). The first maps to identity verification; the second and third map to address-level screening, which is what KYA provides. This is one layer of a full crypto AML compliance program.
The scale of regulatory convergence is documented. FATF's 2025 targeted update surveyed 163 jurisdictions on virtual-asset frameworks. The large majority now allow virtual assets under some regulatory regime, a minority prohibit them, and only a single jurisdiction was assessed as fully compliant with the standards. The direction is unambiguous: transaction-level screening is becoming the baseline, not an optional enhancement, per the FATF Virtual Assets Targeted Update 2025. The gap enforcement actions keep exposing is platforms that verify identity at onboarding but never implement adequate address-level monitoring; regulators treat those as separate, non-substitutable requirements.
How KYA Fulfills AML Obligations at the Address Layer
KYA is the address-level control that fulfils the transaction-monitoring obligation. What it is, how it differs from identity verification, and why the two are complementary rather than substitutable are laid out in full on the Know Your Address (KYA) page. What this page adds is the regulatory angle.
The compliance value is the evidence KYA produces: each screen generates a timestamped, API-logged record tied to a specific transaction, the documented trail examinations expect. The cost of not having it is retroactive. In 2025, more than $1.26 billion in USDT was frozen across addresses on Ethereum and Tron, and platforms that had processed transactions from those addresses without address-level screening carried exposure after the fact.
KYA Integration for Crypto Exchanges, Where to Deploy, and the Hong Kong Stablecoin Case
Deployment spans the transaction lifecycle: pre-deposit, pre-sweep, pre-withdrawal, and portfolio review. This page does not re-enumerate that framework; for the four-control-point deployment model and how each point maps to a specific exposure, see Crypto AML Address Screening.
What is specific to this page is how KYA maps to Hong Kong's stablecoin framework, a jurisdiction-level detail the other pages do not cover. Under that framework, non-custodial holders are not always required to complete full identity verification, provided issuers maintain effective on-chain risk controls. KYA fills that requirement directly: it screens the addresses rather than the identities behind them, so address-level screening can satisfy the on-chain risk-control obligation even where universal identity verification does not apply. For stablecoin issuers and payment platforms operating in Hong Kong, deploying KYA at the pre-deposit and pre-withdrawal points meets the on-chain risk-control requirement. This satisfies the obligation without forcing identity verification at every transaction touchpoint. Regulatory guidance such as FinCEN's framework applies the same logic of proportionate, ongoing monitoring.
Phalcon KYA Compliance vs Manual Review, Speed and Scale
Manual address review cannot meet these obligations at production volume. More than 500 institutions (exchanges, payment platforms, and DeFi protocols across North America, Europe, and Asia) have deployed address-level KYA screening via Phalcon Compliance. They typically start at withdrawal screening, then add deposit screening, then periodic portfolio review. Phalcon Compliance returns a screening decision in milliseconds per transaction, which is what lets a platform log per-transaction evidence across every control point without queueing user activity.
Deploy Phalcon KYA Compliance
Map your transaction flow to the requirements in each market you serve, then wire address screening into the deposit, withdrawal, and review points.