Abstract: A system and method for generating a unified multimedia composition from a plurality of multimedia content items received from heterogeneous, independently operating devices is disclosed. For each item, a composite contextual metadata record including at least spatial and temporal data is generated. An automated curation process applies at least one programmatic selection rule based on the metadata to identify a target subset of the content items. The system then algorithmically aligns and compiles the target subset into the unified multimedia output. The invention further provides a method for generating a digital asset from the collaborative composition by minting a non-fungible token (NFT) cryptographically linked to the composite video and programmatically distributing ownership shares of the NFT to the digital wallets of users who contributed content. In some embodiments, ownership shares are also programmatically allocated to individuals depicted in the video, identified via facial recognition.