Pith Number

pith:4UYTLDJW

pith:2008:4UYTLDJWP4A4XTAFUVARQJW6ZM

not attested not anchored not stored refs pending

Nucleosynthesis and Evolution of Massive Metal-Free Stars

2), (2) UCSC), Alexander Heger (1, S. E. Woosley (2) ((1) LANL

arxiv:0803.3161 v1 · 2008-03-21 · 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{4UYTLDJWP4A4XTAFUVARQJW6ZM}

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	2026-05-18T04:29:33.725581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e531358d367f01cbcc05a5411826decb3217e4ae758bc9363e6b41f4f46d1a60

Aliases

arxiv: 0803.3161 · arxiv_version: 0803.3161v1 · doi: 10.48550/arxiv.0803.3161 · pith_short_12: 4UYTLDJWP4A4 · pith_short_16: 4UYTLDJWP4A4XTAF · pith_short_8: 4UYTLDJW

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/4UYTLDJWP4A4XTAFUVARQJW6ZM \
  | 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: e531358d367f01cbcc05a5411826decb3217e4ae758bc9363e6b41f4f46d1a60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a64427683a3112ea4de6c9c7784b075ec0d0c8576dc7c1f78db1830d353a11bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-03-21T00:06:27Z",
    "title_canon_sha256": "3e0c3c549e45ff3a089c1ade05c902504d204f33033921a0f52897c9b5f34517"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.3161",
    "kind": "arxiv",
    "version": 1
  }
}