Pith Number

pith:VWBZE4HE

pith:2013:VWBZE4HEIP4DCIMU3XPRPZNPPA

not attested not anchored not stored refs pending

Monitoring the Very-Long-Term Variability of X-ray Sources in the Giant Elliptical Galaxy M87

2), (2) Vanderbilt U., (3) U. of Southampton, (4) USRA, (5) IUCAA, 6) ((1) SAAO, (6) Fisk U.), D. A. Swartz (4), D. L. Foster (1, K. G. Stassun (2, NASA MSFC, P. A. Charles (3), R. Misra (5)

arxiv:1303.6968 v2 · 2013-03-27 · 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{VWBZE4HEIP4DCIMU3XPRPZNPPA}

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.

Cited by

1 paper in Pith

Searching for links between energetic millisecond pulsars and repeating fast radio bursts

Receipt and verification

First computed	2026-05-18T03:26:31.865459Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad839270e443f8312194dddf17e5af781b31bb9e309bd6500c7c8f9ca38a619b

Aliases

arxiv: 1303.6968 · arxiv_version: 1303.6968v2 · doi: 10.48550/arxiv.1303.6968 · pith_short_12: VWBZE4HEIP4D · pith_short_16: VWBZE4HEIP4DCIMU · pith_short_8: VWBZE4HE

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/VWBZE4HEIP4DCIMU3XPRPZNPPA \
  | 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: ad839270e443f8312194dddf17e5af781b31bb9e309bd6500c7c8f9ca38a619b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b947f29090ac2a74b9bb6085922b18bf13ba747000105625862dbaff4a83255",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-03-27T20:07:36Z",
    "title_canon_sha256": "bc307d0e88fc2ffd96dc6a03f1c1f4b8d6e67886d9f5a372c1f0d15b59e3f8c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.6968",
    "kind": "arxiv",
    "version": 2
  }
}