Custody Handoff

Peers

• sender
• receiver
• optional carrier or warehouse

Base Facts

• sender releases custody
• carrier records transit or exception facts
• receiver acknowledges receipt

Shared Claim

• asset X moved from A to B

Why It Is Strong

• chain-of-custody is inherently multi-peer
• history matters
• exclusion can matter, such as "asset X is not in my custody set"
• later disputes are common

Certification Ladder

A receiver or insurer can certify:

• handoff H completed

from the underlying sender, carrier, and receiver proofs.