Pith Number

pith:GJ4UL4FK

pith:2002:GJ4UL4FKZ6ZNB3LCXMF3I35ICE

not attested not anchored not stored refs pending

Detectibility of Hydrogen Mixing in Type Ia Supernova pre-Maximum Spectra

David Branch, E. Baron, Eric J. Lentz, Peter H. Hauschildt

arxiv:astro-ph/0207470 v1 · 2002-07-22 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GJ4UL4FKZ6ZNB3LCXMF3I35ICE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:07:44.622478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

327945f0aacfb2d0ed62bb0bb46fa8110f6281feabc105eb2d6da534cb07c78e

Aliases

arxiv: astro-ph/0207470 · arxiv_version: astro-ph/0207470v1 · doi: 10.48550/arxiv.astro-ph/0207470 · pith_short_12: GJ4UL4FKZ6ZN · pith_short_16: GJ4UL4FKZ6ZNB3LC · pith_short_8: GJ4UL4FK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/GJ4UL4FKZ6ZNB3LCXMF3I35ICE \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 327945f0aacfb2d0ed62bb0bb46fa8110f6281feabc105eb2d6da534cb07c78e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "564fa5e69c0267cab687713c31e1ed048dd7d268bf7dff35b37f7aa861880846",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-07-22T16:08:50Z",
    "title_canon_sha256": "a802b32d449b57e1e1e5e84c0d622713847da380e138bf17f1c85381d6056958"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0207470",
    "kind": "arxiv",
    "version": 1
  }
}