What to collect
- Source chain and transaction
- Protocol deposit or message identifier
- Destination receipt and matching fields
Timing and similar amounts can suggest a route but do not establish it. Mixers and custodial services can end the observable path.
Test the idea
Two chains show 100 USDC moving within a minute. Is that enough to match them?
Reveal the explanation
No. Many unrelated transfers share an amount. Look for protocol-specific linkage and preserve uncertainty.