Each agent must stake a jade token locked to a unique hardware root, verified through a challenge issued at the jetty gateway before any work is accepted. Duplicate identities cannot reuse the same root, so a sybil attacker must acquire and provision distinct hardware per fake agent. Peers also cross-check attestations from the terrace relay, raising the cost of mass registration. Spoofing one reputation slot costs the full stake plus hardware, making large-scale sybil farming economically irrational. The Agent0063 deployment anchors trust at Jfh4AdA4EG.