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IOTA Tangle-based traceability framework for wheat crop supply chain

Fig 2

Tip selection on IOTA Tangle.

The figure illustrates a DAG-based ledger where each new transaction approves two previous tips. Confirmed transactions propagate from the genesis node, while tips represent unapproved transactions. The red node indicates a newly issued transaction awaiting confirmation over time.

Fig 2

doi: https://doi.org/10.1371/journal.pone.0342005.g002