BaZi Data · Transparency

Tian Mira’s BaZi datasets: what is public, private and in preparation

Tian Mira clearly separates its sources, their terms of use, and the products derived from them.

Astro-Databank

3,604

Public · Free · Non-commercial

Available

VedAstro-only

15,790

Private · Legal review pending

In preparation

Benchmark

—

Internal lab · Future audit

In preparation

Public · Free

1. The public Astro-Databank dataset

Tian Mira offers a free dataset of 3,604 profiles from the Astro-Databank C collection, all rated Rodden AA. Each profile includes a Tian Mira BaZi advanced_v2 calculation.

Free public download
Non-commercial use only
Attribution to Astro-Databank/Astrodienst (birth data)
Attribution to Tian Mira (BaZi calculations)
No predictive interpretation included

Download the public dataset

In preparation

2. An entirely separate VedAstro product

Tian Mira is preparing a second set built exclusively from the official VedAstro dataset. The official source contains 15,807 records; 17 technical entries were excluded. The final candidate comprises 15,790 validated profiles.

Calculations produced exclusively from VedAstro data
No Astro-Databank data included
Tian Mira advanced_v2 method
Parquet and DuckDB formats prepared
Documentation, quality controls and analytical examples included

The future price will not charge for exclusivity over the VedAstro source data. It will compensate Tian Mira’s work of calculation, normalization, quality control, documentation and analytical format preparation.

VedAstro product in preparation

Private · In preparation

3. The control laboratory and the future Tian Mira benchmark

Tian Mira maintains a strictly private internal corpus to check engine consistency, detect anomalies and test calculation stability.

This corpus will also serve as the foundation for a future technical benchmark aimed at BaZi engine publishers. They will be able to submit results produced by their own engine on a set of controlled cases, then receive a documented comparative report.

The benchmark may examine:

date, location and historical timezone handling;
true solar time correction;
the Four Pillars;
hidden stems and Ten Gods;
stem-branch interactions;
luck cycles;
divergences between weighting methods.

Internal data and reference answers will not be made public. Only the criteria, scores and discrepancies necessary for the audit will be communicated.

Technical benchmark in preparation

The result will measure conformity to a documented Tian Mira protocol. It will not constitute a scientific validation of BaZi, nor a universal guarantee of accuracy, as different schools may use different conventions.

An initial public version will offer demonstration cases. A more comprehensive blind evaluation may then be offered with a detailed report and a dated badge.

Tested with Tian Mira Benchmark — in preparation

Why this separation matters

Respect each source’s specific terms
Ensure no commercial file contains Astro-Databank data
Never sell the non-commercial public dataset
Guarantee calculation traceability
Clearly distinguish public, commercial and internal data

Tian Mira currently only publishes the Astro-Databank dataset of 3,604 profiles in compliance with its non-commercial terms. The VedAstro product of 15,790 profiles is a separate project. It will only be offered after its legal and commercial framework is validated. The internal laboratory and future benchmark remain private tools for control and improvement.