Pith Number

pith:MQFX3USW

pith:1999:MQFX3USW772OOI534D2ZR7G33J

not attested not anchored not stored refs pending

The isolated neutron star candidate RX J1605.3+3249

A.D. Schwope, C. Motch, F. Haberl, F.-J. Zickgraf, G. Hasinger

arxiv:astro-ph/9907306 v1 · 1999-07-22 · 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{MQFX3USW772OOI534D2ZR7G33J}

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	2026-07-04T23:57:18.284066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

640b7dd256fff4e723bbe0f598fcdbda6e97fb7cb111d317cda12a66cd5b1d99

Aliases

arxiv: astro-ph/9907306 · arxiv_version: astro-ph/9907306v1 · doi: 10.48550/arxiv.astro-ph/9907306 · pith_short_12: MQFX3USW772O · pith_short_16: MQFX3USW772OOI53 · pith_short_8: MQFX3USW

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/MQFX3USW772OOI534D2ZR7G33J \
  | 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: 640b7dd256fff4e723bbe0f598fcdbda6e97fb7cb111d317cda12a66cd5b1d99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "899fc9cf6717595b4696cd97c305d41fafe062999e978ec4256692baa1dbf233",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-22T12:19:22Z",
    "title_canon_sha256": "beac2bef3b0f59f5c2580fa88270250d956bb3f8d9044c75c9ce9b742f6fc12f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907306",
    "kind": "arxiv",
    "version": 1
  }
}