# Sources and provenance for release 0.3.0

Sources checked on 21 September 2026. They supply prior mathematical and
spectroscopy context; they do not supply measured validation for this release.

| Source | Role | Boundary |
|---|---|---|
| Frederick T. Wall, “Discrete wave mechanics: The hydrogen atom,” PNAS 83(16), 5753–5755 (1986), [DOI 10.1073/pnas.83.16.5753](https://www.pnas.org/doi/10.1073/pnas.83.16.5753) | Primary prior work on finite-difference, spherically symmetric hydrogen | Prior art for discrete radial hydrogen; the present l=1/E1 implementation and derivation use their own declared conventions. Wall's physical interpretation is not adopted. |
| [NIST Atomic Spectra Database, SRD 78](https://www.nist.gov/pml/atomic-spectra-database) | Authoritative critically evaluated atomic spectrum resource | External reference context, not an input to the frozen numerical gates. |
| [NIST Strong Lines of Hydrogen](https://physics.nist.gov/PhysRefData/Handbook/Tables/hydrogentable2.htm) and its [reference notes](https://physics.nist.gov/PhysRefData/Handbook/Tables/hydrogentable7.htm) | Lists strong H I reference components near 1215.67 Å | The table attributes these wavelengths to Mohr and Kotochigova calculations. They are not treated as new measurements, fitted values or unused validation. |

The exact continuum wavefunctions, angular integrals and oscillator strength in
`DIPOLE_DERIVATION.md` are derived directly. The production program is checked
against those expressions; agreement therefore validates implementation inside
the imported model rather than providing independent physical evidence.

Local provenance:

- `DIPOLE_PROTOCOL_0.3.json` was frozen before execution.
- `outputs/dipole_results.json` is the production record.
- `outputs/independent_dipole_audit.json` is the no-production-import replay.
- `outputs/dipole_release_run.txt` records the complete launcher pass.
- `history/pre_0.3.0` retains exact 0.2.0 release files and the full 1.77 paper.