modify properties of a token or particle in place — metadata, ownership, bindings. requires signature or consensus
update is the signal that mutates existing objects within the cybergraph without destroying and recreating them. the object's identity persists; only its attributes change.
for particles, an update can alter content references, tags, or binding targets. the neuron that authored the particle signs the update signal, and the tru verifies ownership before applying the mutation within the current step.
token updates follow stricter rules. modifying a card's metadata — its name, description, or media references — requires the issuing neuron's signature. supply parameters and provenance bindings remain immutable after mint.
governance-driven updates operate through consensus. parameter changes to the protocol itself — gas limits, reward curves, module configurations — require a proposal, a voting period measured in steps, and approval by locked coins.
each update records a full diff in the state transition log. the previous value and the new value coexist in history, preserving auditability. the cybergraph tracks what changed, when, and by whose authority.
update consumes gas proportional to the size of the mutation. large metadata rewrites cost more than small field changes, aligning economic incentives with storage efficiency across validators.
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