Wallet trace — what the Professor maps:

• Deposit transaction hashes from the claimant wallet to the Yong Ying 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 summary — Yong Ying casefile:

• Yong Ying off-ramps consistently to centralised exchanges — Coinbase, Kraken, and Gemini appear less often than the offshore venues; the casefile names the actual endpoint.
• The Yong Ying off-ramp address is matched to known compliance feeds — the Professor’s standing dataset plus chain-analytics references.
• Compliance leverage is applied at the named counterparty for Yong Ying — the packet meets the off-ramp’s published compliance standard.
• When the Yong Ying off-ramp does not respond, escalation runs through IC3 (for US claimants), state AG, and (above a dollar threshold) civil-discovery overlay.

Recovery pathway — how this casefile moves toward filing:

1. Casefile review on Yong Ying — reading the submission against the no-go list.
2. Trace mapping on Yong Ying — pathway documented to chain-of-custody standard.
3. Off-ramp naming on Yong Ying — exchange endpoint identified.
4. Packet filing on Yong Ying — to the named off-ramp, IC3, state AG; civil discovery overlay as applicable.
5. Documented follow-through on Yong Ying.

What the on-chain reading covers:

• Deposit + forwarding chains for Yong Ying — Bitcoin, Ethereum, Tron USDT-TRC20, plus the smart-contract chains (BSC, Polygon, Avalanche, Arbitrum, Optimism) that cross via bridges.
• Off-ramps the Yong Ying casefile may resolve to — centralised exchanges that respond to compliance filings.
• Filing pathways on Yong Ying — IC3, state AG, off-ramp compliance, and civil-discovery overlay.

What the Professor will never do — by policy:

• Boundary on Yong Ying — seed phrases are off-limits.
• Boundary on Yong Ying — remote logins are off-limits.
• Boundary on Yong Ying — upfront cash retainers are off-limits.
• Boundary on Yong Ying — guaranteed-recovery promises are off-limits.
• Boundary on Yong Ying — unsolicited outbound contact is off-limits.