Stablecoins: USDT/USDC/FDUSD

1) Why stablecoins in iGaming

Stablecoins provide a "fiat-like" experience with an on-chain setting: quick enrollments/withdrawals 24/7, low commissions on the right networks, no classic chargebacks, and predictable face value. In conjunction with on-/off-ramp and A2A, they increase AR and reduce Time-to-Payout.

2) Summary of assets

3) Network choice: speed, cost, sustainability

TRON (USDT/USDC) - extremely low fees and fast finalization; de facto standard for mass flows in a number of regions.
Ethereum L2 (Arbitrum/Optimism/Base) for USDC - speed/cost balance and convenient integration with DeFi/infra.
BSC - low fees, wide support for wallets; consider ecosystem risks.
Solana - high throughput; Consider RPC infrastructure/validity requirements.
Rule: maintain 2 + networks per asset (main + reserve), automate selection by geo/load/value.

4) Compliance and Risk Management

4. 1 KYT/sanctions/blacklisting

Screening of addresses/exchanges/clusters before reception and before withdrawal (KYT score, connections before N-hops).

Issuers are able to freeze addresses (blacklist). Keep a playbook of returns/defrosting and a policy of "clean addresses."

Daily rescreening of clients (PEP/sanctions/adverse) and address books.

4. 2 Travel Rule (VASP↔VASP)

For threshold transfers, communicate over the IVMS101 via TRISA/TRP/OpenVASP or an aggregator gateway.
For unhosted - confirmation of address ownership (signature, microtransfer), limits and RBA.

4. 3 RBA and limits

Low Risk: whitelist exchanges/addresses, fast T + 0/T + 1.
Medium: new addresses/networks → more confirmations, limits.
High: high-risk KUT/SoF → hold/EDD/failure.

5) Treasury and hedging

T0 conversion: instantly translate the incoming stream into an "operational denomination" (steybl→fiat/drugoy stable) by policy.
Diversification: don't keep all float in one stable/net/provider; distribute over USDT/USDC/FDUSD and networks.
RFQ and multibiergie: quote the rate from several providers, taking into account fee, slippage and limits.
Depeg risk: keep automatic switch and exposure limits; monitor quotes to $1 on CEX/OTC.
Operational limits: daily/hourly withdrawal limits, 4-eye and multisig on storage.

6) Integration and technique (parts that break UX)

Address/memo/tag: for networks with memo (XRP/XLM/TON, etc.) - hard validation, hints, QR, deeplink.

Confirmations: dynamic windows by network/load; Show the status "awaiting confirmation."

Idempotence and duplicates: request key 'invoice _ id '/' withdrawal _ id', retray protection.
Currency accounting: fix the rate/time (VWAP/multifeed), store the source of the price.
Sabaccounts/lager: mapping'invoice ↔ txid ↔ wallet_subaccount' and'withdrawal ↔ bankRef/txid '.

7) Returns and disputes

Return = new onchain transfer (no chargebacks).
Policy: return to original network/address or confirmed new address (TAC + proof of ownership).
Fix the return base: by fiat amount at the time of deposit or by crypto-face value; pre-record in ToS.

8) Metrics for management

Approval Rate (crypto deposits), Time-to-Finality p50/p95, cost/transaction over networks.
KYT reject%, sanctions hits, SAR-conversion (if applicable).
Share of L2/TRON in the stream, network/tag errors, rate of returns.
Exposure by assets/networks and limits (re-balance every N hours).

9) Comparative selection matrix (sketch)

10) Anti-patterns

Accept "in any network" without strict validation → loss due to incorrect translations.
Keep 100% float in one stable/network/provider.

Ignore KYT/Travel Rule "due to small amounts."

Returns "to any address they say" without proof of ownership.
Without T0 conversion/exposure limits - catch depegs/volatility.
No idempotency/anti-duplicate - duplicate enrollments/payouts for retrains.

11) Start-up checklist (short)

• Assets/networks: USDT/TRON, USDC/L2, FDUSD + redundant networks.
• QT/sanctions: pre-check entry and pre-withdrawal; address books with TTL.
• Travel Rule: IVMS101 + protocol (or gateway), policy for unhosted.
• Treasury: T0 conversion, multibige RFQ, exposure limits.
• Storage: multisig/HSM, output limits, 4-eye.
• Integration: memo/tag validation, dynamic confirmations, idempotency.
• Accounting/reconsilation: lager, 'invoice/within ↔ txid', course source.
• Returns/disputes: network/address/course rules, letter templates.
• Metrics/alerts: AR, finalization, KYT failures, exposure by asset.
• Support/finance/compliance training; incident playbooks.

12) Summary

The right stablecoin strategy for iGaming is a collection of assets and networks, not one "silver bullet" option. The combination of USDT (mass low-fee), USDC (bank interoperability/L2), and FDUSD (exchange corridors) plus KYT/Travel Rule, T0 conversion, hard network/tag validation, and treasury discipline yields high conversion, fast inference, and controlled risk.