Pith Number

pith:IPVYG2VT

pith:2015:IPVYG2VTCL2FPVMLMGC4OSY5Q6

not attested not anchored not stored refs pending

An eclipsing binary black hole candidate system in the blazar Mrk 421

E. Benitez, F.D. Lora-Clavijo, J.I. Cabrera, N. Fraija, O. Lopez-Corona, S. Mendoza, X. Hernandez

arxiv:1512.01219 v2 · 2015-12-03 · astro-ph.GA · 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{IPVYG2VTCL2FPVMLMGC4OSY5Q6}

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	2026-05-18T01:18:54.058385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43eb836ab312f457d58b6185c74b1d87a3c65177cf18c776e6ea915bf8b4be71

Aliases

arxiv: 1512.01219 · arxiv_version: 1512.01219v2 · doi: 10.48550/arxiv.1512.01219 · pith_short_12: IPVYG2VTCL2F · pith_short_16: IPVYG2VTCL2FPVML · pith_short_8: IPVYG2VT

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/IPVYG2VTCL2FPVMLMGC4OSY5Q6 \
  | 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: 43eb836ab312f457d58b6185c74b1d87a3c65177cf18c776e6ea915bf8b4be71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adaed664474d000307fe7953591097629933095fce879e1a2839899298152baa",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-03T20:35:15Z",
    "title_canon_sha256": "c1067e5084d50d4b0bc1a8516cd544dfcb4eac1d52fd01a53f6eb59d9030c45e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.01219",
    "kind": "arxiv",
    "version": 2
  }
}