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Updated: May 5, 2026

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VeriFed: Temporally Consistent Continuous Cross-Chain Data Federation.

Kun Hao1, Meng Bi1, Yuliang Ma2

  • 1School of Software, Shenyang University of Technology, Shenyang 110870, China.

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|May 4, 2026
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Summary
This summary is machine-generated.

VeriFed ensures temporally consistent cross-chain joins by aligning ledger snapshots and using incremental verification. This system achieves high efficiency and verifiability for continuous cross-chain analytics.

Keywords:
blockchaincross-chain querydistributed systemsjoin query processingverifiable query

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Area of Science:

  • Distributed Systems
  • Blockchain Technology
  • Data Analytics

Background:

  • Cross-chain analytics require continuous data joins across ledgers.
  • Existing solutions struggle with asynchronous state evolution and temporal misalignment.
  • Inconsistent results arise from static snapshots and neglected temporal alignment.

Purpose of the Study:

  • Introduce VeriFed, a system for temporally consistent continuous cross-chain joins.
  • Address the challenge of snapshot-aligned continuous joins across heterogeneous blockchain protocols.
  • Enhance the efficiency and verifiability of cross-chain data analysis.

Main Methods:

  • Formalize snapshot-aligned continuous joins.
  • Design a Unified Adapter Layer (UAL) for snapshot alignment.
  • Develop incremental verification using Epoch Attestation Mesh (EAM) and Delta-Linked Proof Forest (DLPF).
  • Implement an incremental multi-objective optimizer for latency and cost.

Main Results:

  • Achieve sub-second per-epoch latency (approx. 38 ms) in experiments.
  • Reduce verification overhead by orders of magnitude compared to baselines.
  • Effectively detect tampering with zero false positives.
  • Demonstrate consistent efficiency and verifiability under continuous updates.

Conclusions:

  • VeriFed provides a robust solution for temporally consistent continuous cross-chain joins.
  • The system significantly improves efficiency and reduces verification overhead.
  • VeriFed ensures data integrity and verifiability in asynchronous cross-chain environments.