[Compliance] Add AML transaction monitoring and sanctions screening

[kelly-musk]

Problem

For a money transfer / crypto on-off ramp platform, Anti-Money Laundering (AML) controls are a regulatory requirement in Nigeria, Kenya, Ghana, South Africa, and Uganda. Currently there is:

• No transaction monitoring
• No velocity checks
• No sanctions screening (OFAC, UN lists)
• No Suspicious Activity Report (SAR) workflow

Fix

1. Integrate a compliance provider: Elliptic, Chainalysis, or ComplyAdvantage
2. Add velocity rules: flag accounts with unusual transaction volume
3. Add sanctions screening on wallet addresses and bank account names
4. Create an internal admin interface for reviewing flagged transactions

Impact

Critical compliance — regulatory requirement for operating a crypto ramp in target markets.

[Toyinoje]

@Toyinoje has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello maintainer,i will like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Toyinoje to this issue.