Pith Number

pith:PJ4FHUYE

pith:2013:PJ4FHUYEWXEK3XHLMV7HZMO66I

not attested not anchored not stored refs pending

Broad iron line in the fast spinning neutron-star system 4U 1636-53

(2) Amsterdam, (3) INAF-OAB, (4) Canary Islands), Andrea Sanna (1), Beike Hiemstra (1), Diego Altamirano (2), Manuel Linares (4) ((1) Groningen, Mariano Mendez (1), Tomaso Belloni (3)

arxiv:1303.6337 v1 · 2013-03-25 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PJ4FHUYEWXEK3XHLMV7HZMO66I}

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	2026-05-18T01:50:52.883535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a7853d304b5c8addceb657e7cb1def2130b34084d3c713fdf3d92e0d0c252f7

Aliases

arxiv: 1303.6337 · arxiv_version: 1303.6337v1 · doi: 10.48550/arxiv.1303.6337 · pith_short_12: PJ4FHUYEWXEK · pith_short_16: PJ4FHUYEWXEK3XHL · pith_short_8: PJ4FHUYE

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/PJ4FHUYEWXEK3XHLMV7HZMO66I \
  | 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: 7a7853d304b5c8addceb657e7cb1def2130b34084d3c713fdf3d92e0d0c252f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d7614bcbaf0b7c93f498e5a6905e398d1dbd24d36babc69ab73a992bde747c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-03-25T22:28:38Z",
    "title_canon_sha256": "52a518abec3c70f4cd9d56df3e7d859a3486bac72cd0615ef99dd4e35c077a5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.6337",
    "kind": "arxiv",
    "version": 1
  }
}