# Holistix Open Biohacking Data Project v1.5.0 Release Notes

Status: Published

Canonical subject dataset version: v1.2

Predecessor project release: v1.4

Predecessor release DOI: 10.5281/zenodo.21574706

Concept DOI: 10.5281/zenodo.20978709

## Overview

Version 1.5.0 is an interoperability, reproducibility, and machine-readable packaging release for the Holistix Open Biohacking Data Project.

The eight canonical subject datasets remain at dataset version v1.2.

Project release v1.5.0 supersedes v1.4 as the current published project release.

## Added in v1.5.0

- Frictionless-style Data Package metadata in `datapackage.json`
- machine-readable schemas for the canonical CSV datasets
- human-readable `DATA_DICTIONARY.md`
- Schema.org JSON-LD catalog in `catalog.jsonld`
- RO-Crate 1.2 metadata in `ro-crate-metadata.json`
- deterministic JSONL exports for all eight canonical datasets
- `project_identity.json` separating draft release identity from current public release identity
- generated provenance metadata
- deterministic release-build manifest
- reproducibility and interoperability validation

## Canonical Subject Datasets

The following eight canonical datasets remain at dataset version v1.2:

1. PEMF Frequency Index
2. PEMF Contraindications Database
3. Red Light Dose Index
4. Hydrogen Water Reference Index
5. Infrared Therapy Reference Index
6. Blue Light Therapy Reference Index
7. Terahertz Device Reference Index
8. Negative Ion Safety Index

## Validation Status

The v1.5.0 release has passed:

- Frictionless Data Package validation
- RO-Crate 1.2 required validation
- 65 of 65 required RO-Crate checks
- JSON parsing validation
- JSONL parsing validation
- deterministic regeneration checks
- clean release-build rehearsal

Current validated build state:

- Data Package resources: 59
- JSONL records: 111
- JSON parse errors: 0
- JSONL parse errors: 0

## Release Boundary

Version 1.5.0 is the current published project release.

v1.5.0 release DOI: 10.5281/zenodo.21862535

Version 1.5.0 supersedes v1.4. The v1.4 DOI remains part of the permanent release lineage.

Concept DOI for all project versions:

`10.5281/zenodo.20978709`

Previous published v1.4 DOI:

`10.5281/zenodo.21574706`

## License

Creative Commons Attribution 4.0 International (CC BY 4.0).