From the marginalia — the deposit pathway:

• Initial deposit hashes to the ProInteractiveBrokers receiving address at prointeractivebrokers.com.
• Hop-by-hop forwarding wallets across the deposit chain, captured with chain-of-custody hashes.
• Cross-chain bridge events that move value into the chain where liquidity supports the eventual off-ramp.
• Obfuscation events through mixer contracts and privacy services.
• Centralised-exchange off-ramp wallets — the named counterparty that holds compliance leverage.

From the lectern — off-ramp identification:

• ProInteractiveBrokers’s off-ramp endpoint, in this casefile, is the centralised exchange that holds compliance leverage — typically named in the packet alongside the deposit address.
• Chain-analytics datasets cross-reference the ProInteractiveBrokers off-ramp wallet against historical laundering throughput.
• The ProInteractiveBrokers packet is delivered to the off-ramp compliance desk in a format the desk’s reviewers act on.
• Escalation pathways for ProInteractiveBrokers, where needed: IC3, the relevant state AG, and a civil-discovery overlay for KYC on the off-ramp wallet.

Recovery sequence — from on-chain reading to filed packet:

1. Triage on ProInteractiveBrokers — submission read against a no-go checklist, written go/no-go returned to the claimant inside one business day.
2. Trace on ProInteractiveBrokers — deposit pathway mapped across chains, captured with chain-of-custody hashes.
3. Identify on ProInteractiveBrokers — off-ramp endpoint matched to a named exchange counterparty.
4. File the ProInteractiveBrokers packet — IC3, state AG (where loss meets state thresholds), off-ramp compliance desk, and civil-discovery overlay where dollar value supports it.
5. Follow-through on ProInteractiveBrokers — the Professor stays on the casefile until a documented next step exists.

What the casefile records — chains and counterparties:

• Chains the Professor reads for ProInteractiveBrokers casefiles — BTC, ETH, Tron USDT, BNB Smart Chain, Avalanche, Polygon, Arbitrum, Optimism, plus the cross-chain bridges that link them.
• Off-ramps named in ProInteractiveBrokers — major centralised venues with compliance desks that accept regulator-grade packets.
• Filing pathways available on ProInteractiveBrokers — IC3 for US claimants, state AG offices, off-ramp compliance, and civil-discovery overlay for high-value loss.

Boundaries on every ProInteractiveBrokers casefile — never crossed:

• On the ProInteractiveBrokers casefile — never request a seed phrase. Ever.
• On the ProInteractiveBrokers casefile — never request remote-access logins to a wallet or exchange.
• On the ProInteractiveBrokers casefile — never demand an upfront cash retainer to scope the matter.
• On the ProInteractiveBrokers casefile — never promise a guaranteed recovery. The trail does not promise one.
• On the ProInteractiveBrokers casefile — never call the claimant unsolicited. Written-only.