Pith Number

pith:PBL2IZTO

pith:2002:PBL2IZTOGRSRHTKA4QEG7225LO

not attested not anchored not stored refs pending

New Constraints on Neutron Star Cooling from Chandra Observations of 3C58

David J. Helfand, Patrick Slane, Stephen S. Murray

arxiv:astro-ph/0204151 v1 · 2002-04-09 · 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{PBL2IZTOGRSRHTKA4QEG7225LO}

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	2026-05-18T01:07:44.979758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7857a4666e346513cd40e4086feb5d5b8c25885fd9bf1d44de5363f94f84a74a

Aliases

arxiv: astro-ph/0204151 · arxiv_version: astro-ph/0204151v1 · doi: 10.48550/arxiv.astro-ph/0204151 · pith_short_12: PBL2IZTOGRSR · pith_short_16: PBL2IZTOGRSRHTKA · pith_short_8: PBL2IZTO

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/PBL2IZTOGRSRHTKA4QEG7225LO \
  | 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: 7857a4666e346513cd40e4086feb5d5b8c25885fd9bf1d44de5363f94f84a74a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ee2e998da4f810cb3eedc8f491072fb6e072040d6d949e5cfbadc0bcba35c5a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-09T19:42:03Z",
    "title_canon_sha256": "1e63a326931dd214730859037b9e56d891f2d7da776607d26a13119896ee94f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204151",
    "kind": "arxiv",
    "version": 1
  }
}