Pith Number

pith:6XQPW66B

pith:2006:6XQPW66BOYPO7JRYCX7CNU4H5R

not attested not anchored not stored refs pending

The (54Fe+58Ni)/56Ni ratio as a second parameter for Type Ia supernova properties

INAF-OATs, Munich, Paolo A. Mazzali (MPA, Philipp Podsiadlowski (Oxford), Trieste)

arxiv:astro-ph/0604032 v1 · 2006-04-03 · 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{6XQPW66BOYPO7JRYCX7CNU4H5R}

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	2026-07-04T16:58:33.009265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5e0fb7bc1761eefa63815fe26d387ec422b7ad7e60539463109c9e238e064d6

Aliases

arxiv: astro-ph/0604032 · arxiv_version: astro-ph/0604032v1 · doi: 10.48550/arxiv.astro-ph/0604032 · pith_short_12: 6XQPW66BOYPO · pith_short_16: 6XQPW66BOYPO7JRY · pith_short_8: 6XQPW66B

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/6XQPW66BOYPO7JRYCX7CNU4H5R \
  | 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: f5e0fb7bc1761eefa63815fe26d387ec422b7ad7e60539463109c9e238e064d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0adb51a5e193cf38370392e1204201cf83418e614ad1b08fcbe7c338643b74e4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-04-03T17:06:33Z",
    "title_canon_sha256": "34b43e3e54385e6a887c78778c00b40d234c254f3688a97f26d34b8d7ec67c69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0604032",
    "kind": "arxiv",
    "version": 1
  }
}