Cryptocurrency integration: Bitcoin, Ethereum, Litecoin

1) Why does the market need it in 2025

User demand: fast deposits/withdrawals, high availability from mobile, lack of banking downtime.

Operational flexibility: fewer failures for fraud triggers of traditional payments, 24/7 processing.

Product differentiation: VIP limits, instant buy-in tournaments, on-chain promotional mechanics.

Technical maturity: HTML5 clients, WebRTC/live, low-latency CDN - crypto deposits fit seamlessly into the modern stack.

2) Connection models: how exactly to receive crypt

A. Through a crypto provider (custody as a service): fast start, KYC/AML from a partner, a single API on BTC/ETH/LTC.

B. Direct connectivity (own custom): More control over fees and speed, but CAPEX on security and compliance.

C. Hybrid: deposits - through the provider, outputs and VIP - through your wallet/custom node.

3) Payment architecture (core)

HD addresses and derivation: unique address for deposit → tracking mempool → fixing N confirmations → crediting.

Hot/warm/cold wallets: hot - operational payments; warm - butching; cold/MRS - reserve storage.

MPC/HSM: without a single key for the employee; distributed signatures, quorum policy.

Notifications and state machine: 'waiting → pending → confirmed → credited → settled/refunded'.

Commissions: dynamic phies, butching UTXO (BTC/LTC), EIP-1559 for ETH (base fee + priority tip).

Accounting: ledger in AUD with on-chain equivalent, revaluation at the rate of the liquidity provider, audit of trails.

4) Compliance in Australia (without "water")

Regulatory: AML/CTF compliance; registration and reporting to AUSTRAC (for DCE/operators), SMR procedures/tax reports where applicable.

KYC/SoF/SoW: mandatory verification, verification of the source of funds at atypical amounts, age restrictions.

Travel Rule (VASPs): sender/receiver data exchange for transactions between virtual asset service providers; IVMS-101 format.

Sanctions/screening: block lists of addresses, POP/sanctions lists, geocontractions.

On-chain analytics: risk scoring of incoming UTXO/addresses (mixers, darknet markings, hacked exchanges), automatic hold/deviations.

Responsible play: deposit/time limits, reality-check, self-exclusion - equally required for crypto and fiat.

5) UX practices (what works)

3-step deposit: coin selection → QR/address + amount → real-time status tracking.

Early Credit (Risk): Enrollment "pending" to full confirmation for small amounts/loyal accounts.

Minimum amounts and deadlines: "address active 60 minutes," warning about expiring invoice (especially for exchanges with memo/tag).

Transparent fees: who pays network fee and conversion margin; preliminary calculation before sending.

Returns: if a smaller/larger amount came or overdue - an automatic offer to return to the same or another address after KYC.

Training in the product: tips by memo/tag, warning about irreversibility on-chain.

6) Risks and controls

Volatility: auto-hedge policy (instant conversion to AUD/stablecoin), P&L rules, crypto-balance limits.

Operational: key leaks → MPC/HSM, rotation, access on the principle of "minimum necessary."

Fraud patterns: chains of microdeposits, "cleaning" stolen funds through small bets and quick withdrawal; anti-velocity/behavioral patterns.

Technicals: mempool overflow, fee market → payment prioritization, alt channels (Lightning/L2).

Legal: non-synchrony of the platform/custodia provider license; regular gap analyses.

7) Coin specificity (BTC/ETH/LTC) for casino

Bitcoin (BTC)

What to use: large deposits/VIP, high confidence, wide exchange liquidity.

Technique: UTXO management, fee estimators, RBF/CPFP for accelerations; Lightning support for microdeposits and instant top-ups.

Pros: network reliability, mature analytics tools.

Cons: Peak fees/delays for non-L2 network loading.

Ethereum (ETH)

What to use: quick deposits/conclusions, on-chain promo, NFT campaigns, token bonuses.

Technique: EVM compatibility, EIP-1559, L2 support (Arbitrum/Optimism/Base) for cheap and fast operations; separate token accounting.

Pros: ecosystem, smart contracts (escrow/promo checkpoints).

Cons: variable gas-flow L1; requires competent routing on L2.

Litecoin (LTC)

What to use: everyday replenishment, economical conclusions, battle operations.

Technique: Similar to BTC by UTXO, usually more predictable commissions.

Pros: speed/cost of transactions, ease of integration.

Cons: Lower institutional coverage and tools than BTC/ETH.

8) Product metrics (what to measure each week)

Deposit Conversion: Page View → Successful on-chain Transaction → Credit.

Time to play: create an invoice → credit → first bet.

Error rate: incorrect memo/tag, "hanging in mempool," overdue invoices, returns.

Unit economy: the average deposit/withdrawal fee of the network, the average check, the share of butch payments.

Risk metrics:% of doubtful incoming addresses, hold rate, share of deviations, SLAs per escalation.

Retention/LTV: comparison of crypto cohorts with fiats (D7/D30, ARPU, VIP share).

9) Withdrawals

Butching and payout windows: fixed slots per day, VIP priority and urgent applications.

Address books/whitelists: output to previously verified addresses, delay for first payments.

Anti-abuse: limits on amounts/frequency, manual review for anomalies, split payments for large amounts.

Accelerations: RBF (BTC), gas price bump (ETH/L2), fee buffers in peaks.

10) Promo and marketing that really work with crypto

Crypto cashback: a percentage of the net deposit in the same coin, with a vesting period.

Currency tournaments: leaderboards "BTC-tables," "ETH-evenings," prizes in the same coin.

On-chain badges/NFT: non-interchangeable "badges" for activity (without speculative backstop).

Bonus missions: "3 deposits in LTC up to N number" → fix bonus; anti-multi-account - via device/biometric risk models.

Transparency of conditions: clear wagering, prohibition of "bonus cycling," visible deadlines.

11) Implementation Roadmap (by step)

1. Gap analysis of licenses/policies, appointment of crypto officer and DPO.

2. Choice of custom model (provider/own/MRS-hybrid).

3. Integration of risk-screening addresses and sanctions lists.

4. Ledger design: multicurrency balances, revaluation, reporting.

5. UX setup: QR, deeplink, statuses, returns, training tips.

6. Regulatory procedures: KYC/SoF/SoW, Travel Rule interaction.

7. Fee politics and butching; deposit/withdrawal/scoring limits.

8. Set of metrics and dashboards (ops + risk + product).

9. Pilot launch on LTC/ETH L2 (cheap stream), then BTC, then Lightning.

10. A/B: early credit, payout windows, different N-confirmations by segment.

11. Support/moderation training; playbooks of incidents and returns.

12. Quarterly safety and compliance audit.

12) What NOT to do

Credit deposits without mempool detection and risk assessment.

Store large leftovers in a hot wallet or on the same key.

Ignore Travel Rule and on-chain risk scoring.

Mix corporate and client funds in one ledger.

Masking commissions and conversion rates - this hits LTV and trust.

Conclusion

1. Reliable infrastructure (HD addresses, MPC/HSM, butching, L2/Lightning),

2. Strict compliance (AUSTRAC, Travel Rule, on-chain analytics, responsible game),

3. Clear UX and metrics (transparent commissions, predictable state, SLA).

Proper implementation gives the market instant deposits, a higher envelope and a stable payment economy, and players a quick, understandable and secure experience.