# 6.1 The Universal Identifier (UID) Standard

To maintain lineage across fragmented environments, Provenance generates a Universal Identifier (UID) for every registered asset. The UID is a recursive hash that remains constant even if the asset is bridged from Ethereum Mainnet to an L2 or an external L1.

* The Global Anchor: While the asset moves, its "Genesis Pulse" remains anchored to the Provenance Registry.
* State-Synchronization: We utilize cross-chain messaging protocols (e.g., LayerZero, CCIP) to synchronize the "Lineage Proof" across multiple chains. This prevents the "Double-Minting" of authenticity and ensures that a fake version on a side-chain cannot claim the same lineage as the original.


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