Pith Number

pith:P5J7RY4Z

pith:1998:P5J7RY4ZSSSCLVZWNOQRUWJ4EL

not attested not anchored not stored refs pending

Constraints on optical emission from the isolated neutron star candidate RX J0720.4-3125

(2) Max-Planck-Institut fuer extraterrestrische Physik, C. Motch (1), F. Haberl (2) ((1) CNRS, Garching), Observatoire de Strasbourg

arxiv:astro-ph/9802301 v1 · 1998-02-24 · 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{P5J7RY4ZSSSCLVZWNOQRUWJ4EL}

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	2026-05-18T01:07:37.778918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f53f8e39994a425d7366ba11a593c22cdbf6e415d97677fe3ffbe251bfa16dd

Aliases

arxiv: astro-ph/9802301 · arxiv_version: astro-ph/9802301v1 · doi: 10.48550/arxiv.astro-ph/9802301 · pith_short_12: P5J7RY4ZSSSC · pith_short_16: P5J7RY4ZSSSCLVZW · pith_short_8: P5J7RY4Z

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/P5J7RY4ZSSSCLVZWNOQRUWJ4EL \
  | 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: 7f53f8e39994a425d7366ba11a593c22cdbf6e415d97677fe3ffbe251bfa16dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f56e87602d35812730ccbe3a5c190b10e2c82af347dea7204fc837cb0161703",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-02-24T09:05:00Z",
    "title_canon_sha256": "7f2d68d085f56c93a05b2ae4bc45f6adeb78658348a4b419e3fe077436105ef8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9802301",
    "kind": "arxiv",
    "version": 1
  }
}