Pith Number

pith:RWIUWWYF

pith:2002:RWIUWWYF4SESKCL2KLMM6A7NVO

not attested not anchored not stored refs pending

Is RX J185635-375 a Quark Star?

(2) MIT Center for Space Research, (3) Universitat Tubingen), A. Fruscione (1), B. J. Wargelin (1), D. O. Pease (1), F. Nicastro (1), H. L. Marshall (2), J. J. Drake (1), K. Werner (3) ((1) Smithsonian Astrophysical Observatory, M. Juda (1), P. E. Freeman (1), S. Dreizler (3), V. Kashyap (1)

arxiv:astro-ph/0204159 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{RWIUWWYF4SESKCL2KLMM6A7NVO}

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	2026-07-04T16:29:40.653355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d914b5b05e48925097a52d8cf03edabb767c7612aaebfc3fcb8495c32edb78f

Aliases

arxiv: astro-ph/0204159 · arxiv_version: astro-ph/0204159v1 · doi: 10.48550/arxiv.astro-ph/0204159 · pith_short_12: RWIUWWYF4SES · pith_short_16: RWIUWWYF4SESKCL2 · pith_short_8: RWIUWWYF

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/RWIUWWYF4SESKCL2KLMM6A7NVO \
  | 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: 8d914b5b05e48925097a52d8cf03edabb767c7612aaebfc3fcb8495c32edb78f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0e83a10f555627838e83fd438d6f82cf39a2871b994c98ed6ecb04db1aa36b8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-09T15:52:48Z",
    "title_canon_sha256": "491812a0aa3ec363f03ddae64c0cc2740e85a3e01037baa44bb821f32ec3b5c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204159",
    "kind": "arxiv",
    "version": 1
  }
}