Pith Number

pith:VCR5Q4OA

pith:2002:VCR5Q4OAI46RGSG7VZQLVRJCPB

not attested not anchored not stored refs pending

Determination of Primordial Metallicity and Mixing in the Type IIP Supernova 1993W

David Branch, E. Baron, E. Cappellaro, M. Turatto, Peter E. Nugent, Peter H. Hauschildt

arxiv:astro-ph/0212071 v1 · 2002-12-03 · 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{VCR5Q4OAI46RGSG7VZQLVRJCPB}

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	2026-07-04T16:31:20.814570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8a3d871c0473d1348dfae60bac5227843eed7de927464aaa3e9caae869c573b

Aliases

arxiv: astro-ph/0212071 · arxiv_version: astro-ph/0212071v1 · doi: 10.48550/arxiv.astro-ph/0212071 · pith_short_12: VCR5Q4OAI46R · pith_short_16: VCR5Q4OAI46RGSG7 · pith_short_8: VCR5Q4OA

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/VCR5Q4OAI46RGSG7VZQLVRJCPB \
  | 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: a8a3d871c0473d1348dfae60bac5227843eed7de927464aaa3e9caae869c573b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1da03134a6fd68808d762c0e3a8809948682ff26c368b16e7b7f9cbfe27dbfc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-03T17:23:59Z",
    "title_canon_sha256": "10d39721e291e47fcf4d9361fa16f5f0861d45e1a3d0047788689fdca6dba3b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212071",
    "kind": "arxiv",
    "version": 1
  }
}