Fluid Notarization: Verifiable Evolution of Concurrently Edited Structured Documents
Fluid Notarization anchors delta-CRDT change graphs on blockchain, providing verifiable provenance for concurrently edited documents, demonstrated on collaborative electronic health records.
The paper introduces Fluid Notarization, a paradigm that notarizes the evolution of collaboratively edited structured documents rather than isolated snapshots. It builds on Melda, a JSON-native delta-CRDT representing changes as compact content-addressed deltas linked by causal dependencies, with blockchain notarization reduced to recording identifiers of evolution artifacts while synchronization, reconstruction, and conflict resolution remain off-chain. The architecture combines deterministic CRDT convergence with independently auditable proof-of-existence, provenance, and publication evidence, validated through a prototype based on collaboratively edited electronic health records.
- Certifies causally related evolution artifacts instead of document snapshots
- Builds on Melda's JSON-native delta-CRDT with content-addressed deltas
- Blockchain stores artifact identifiers; synchronization and conflict resolution stay off-chain
- Prototype validated on collaboratively edited electronic health records
- Tags
- blockchaincollaborative-editingcrdtdocument-integrityelectronic-health-recordsnotarizationprovenance
- Products
- Fluid NotarizationMelda
From the original article
1 min read at arxiv.orgTraditional blockchain-based document notarization follows a snapshot-oriented model in which each document revision is represented as an independent state anchored on-chain through a cryptographic reference. While effective for immutable artifacts, this approach becomes inadequate when documents evolve through collaborative editing.
By Amos Brocco · arxiv.org
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