Pith Number

pith:VM674ZXY

pith:1998:VM674ZXYZAU3ZIIMSA44EN65T4

not attested not anchored not stored refs pending

Axion Mass Limits from Cooling Neutron Stars

(2) University of Toledo, (3)Montana State Univ.), Hideyuki Umeda(1), Ken'ichi Nomoto(1) ((1) Research Center for the Early Universe, Letao Qin(3), Naoki Iwamoto(2), Sachiko Tsuruta(3), University of Tokyo

arxiv:astro-ph/9806337 v1 · 1998-06-25 · 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{VM674ZXYZAU3ZIIMSA44EN65T4}

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	2026-07-04T14:15:53.045397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab3dfe66f8c829bca10c9039c237dd9f3e26f0fd36767da91e36b1daff90159c

Aliases

arxiv: astro-ph/9806337 · arxiv_version: astro-ph/9806337v1 · doi: 10.48550/arxiv.astro-ph/9806337 · pith_short_12: VM674ZXYZAU3 · pith_short_16: VM674ZXYZAU3ZIIM · pith_short_8: VM674ZXY

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/VM674ZXYZAU3ZIIMSA44EN65T4 \
  | 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: ab3dfe66f8c829bca10c9039c237dd9f3e26f0fd36767da91e36b1daff90159c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a08540ca02f5f7951aa3b1b60c3cb16482901102d223d46e12a07a6b6cc85b8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-06-25T11:42:44Z",
    "title_canon_sha256": "f0ae4706bf637731fb94e4b0ea35fa40f497b970de82ecaf621f2ff7d82c9d33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9806337",
    "kind": "arxiv",
    "version": 1
  }
}