# Node Identity

> The requirement that each participating node have a distinct identity to index its own counter.

Record: `lexicon:node-identity`
Kind: constraint
Layer: [Causality Core](https://banes-lab.com/records/layer/causality-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-node-identity

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Metadata Size](https://banes-lab.com/records/lexicon/metadata-size.md) and before [Single Global Clock Assumption](https://banes-lab.com/records/lexicon/single-global-clock-assumption.md).

## Category

- [Causality / Ordering / Distributed Time](https://banes-lab.com/records/lexicon-category/causality-ordering-distributed-time.md)

## Required by

- [Vector Clocks](https://banes-lab.com/records/architecture/vector-clocks.md)

## Linked from

- [Causality / Ordering / Distributed Time](https://banes-lab.com/ontology/principles/architecture-category-causality-ordering-distributed-time.md)