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Architecture · easy

3. Object Ownership Models

Address-owned, Shared, Immutable, and Wrapped objects.

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Sui objects exist in four ownership states: 1. Address-Owned: Owned exclusively by an account address; can only be passed by that owner. 2. Shared Objects: Accessible to anyone; concurrent writes require consensus ordering. 3. Immutable Objects: Frozen permanently via `transfer::freeze_object`; read-only for all. 4. Wrapped Objects: Nested inside another struct, losing independent top-level address identity.

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Check your understanding

  1. 1. Which type of object bypasses consensus for single-owner transactions?

  2. 2. How do you permanently make an object read-only on Sui?

  3. 3. What happens to a wrapped object's UID?

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