tsp-2.md

TSP-2 — Card

the non-fungible token nature of plumb. one of two natures all value reduces to.

nature

property	value
fungibility	no — each unit has identity
conservation	owner_count(id) = 1 always
identity	per Card, content-addressed
transfer	by update (PLUMB) ownership change
creation	by mint (PLUMB)
destruction	by burn (PLUMB)

a Card has an id, an owner, a configurable trait profile, and holds Coin balances. exactly one Card exists per id; exactly one owner per Card at every block.

what a Card represents

persons (Robots — with Soul and Avatar)
places (slots, parcels, buildings, time-windows)
contracts (commitments, agreements, leases)
titles (deeds, registrations, certificates)
credentials (passports, permits, licenses, diplomas)
assets (anything sold via cyberia/protocol/marketplace)

conservation

∀ id : owner_count(id) = 1

ownership is single-valued at every block. transfer is an atomic ownership-change PLUMB operation through update.

relationship to Coin

Cards HOLD Coin balances. a Card's economic state is its set of (Coin-class, balance) pairs plus the bonds it carries to other Cards. inventory, registry, balance sheet — all views over Card state.

the Robot is a Card

every Robot is realized as a Card. its Soul points to the Card; its Sigma is the set of Coin balances the Card holds and the bonds it carries to other Cards.

traits — the configurable profile

a Card carries a trait profile in five categories (see cyb/robot §6 for the accounting projection):

skills — what the Card CAN do
duties — what the Card MUST do (or cannot do)
senses — what the Card PERCEIVES
bonds — what the Card is connected to
memory — what the Card has accumulated

traits install through PLUMB hooks via the update operation.

Homonyms

plumb/tsp-2