From the marginalia — the deposit pathway:

• Deposit transaction hashes from the claimant wallet to the OTC Markets platform receiving address.
• Forwarding wallets the platform consolidated through — typically two to four hops on the deposit chain (BTC / ETH / USDT-TRC20 / BSC / Polygon / Arbitrum / Optimism / Avalanche).
• Bridge crossings between chains, where the operator moves value into a chain with deeper liquidity ahead of the off-ramp.
• Mixer interactions — Tornado-Cash variants, Sinbad, and the smaller obfuscation services that operators rotate through under regulatory pressure.
• Final off-ramp wallet — the centralised exchange deposit address that received the consolidated funds.

Off-ramp reading — exchange counterparty for OTC Markets:

• Off-ramp endpoint for OTC Markets resolves to a named centralised counterparty — the venue varies casefile to casefile, but the resolution always names a real exchange wallet.
• OTC Markets’s off-ramp address is matched against the Professor’s compliance feed and against external chain-analytics datasets.
• The compliance packet for OTC Markets is structured the way an off-ramp compliance reviewer expects to receive evidence — header, hashes, narrative, ask.
• If the OTC Markets off-ramp counterparty does not respond inside the published window, escalation routes through IC3, state AG, and civil discovery.

How a OTC Markets casefile becomes a regulator-ready filing:

1. Read the OTC Markets submission — written go/no-go returned.
2. Map the OTC Markets wallet trail — every hop captured with chain-of-custody hashes.
3. Name the OTC Markets off-ramp — endpoint counterparty identified.
4. Build and file the OTC Markets recovery packet — to IC3, state AG, off-ramp compliance, civil-discovery overlay.
5. Stay on the OTC Markets file — until written next steps exist.

Reading-list — chains and exchanges in scope:

• Chains tracked on OTC Markets — Bitcoin and Ethereum at the deposit side; Tron USDT-TRC20 and BSC at the consolidation side; bridges crossed where the operator chases liquidity.
• Off-ramps tracked on OTC Markets — named exchange counterparties with public compliance contacts.
• Filings supported on OTC Markets — IC3, state AG, off-ramp compliance, civil discovery — selected by the dollar value and the off-ramp’s responsiveness.

Lines the Professor will not cross:

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