Pith Number

pith:ZCK33EUR

pith:2013:ZCK33EUR4SFUY25QAWSV2NKBMM

not attested not anchored not stored refs pending

X-Ray Observations of Black Widow Pulsars

F. Camilo, I. Stairs, J. Hessels, M. Kerr, M. McLaughlin, M. Roberts, P. Gentile, P. Ray, S. Ransom

arxiv:1305.6799 v2 · 2013-05-29 · 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{ZCK33EUR4SFUY25QAWSV2NKBMM}

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	2026-05-18T01:49:40.248288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c895bd9291e48b4c6bb005a55d3541630c80f00728ff02574e8172f27a95fd61

Aliases

arxiv: 1305.6799 · arxiv_version: 1305.6799v2 · doi: 10.48550/arxiv.1305.6799 · pith_short_12: ZCK33EUR4SFU · pith_short_16: ZCK33EUR4SFUY25Q · pith_short_8: ZCK33EUR

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/ZCK33EUR4SFUY25QAWSV2NKBMM \
  | 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: c895bd9291e48b4c6bb005a55d3541630c80f00728ff02574e8172f27a95fd61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da2fece049976677cb2b196446ea1f326195034b3e31dba45202bef12ce78033",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-05-29T13:49:15Z",
    "title_canon_sha256": "c43a02f49e0f330606d85256b6f79a5dd6c3dbdd70de31defb3a3288178ba0ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6799",
    "kind": "arxiv",
    "version": 2
  }
}