Pith Number

pith:ZXJXYJQU

pith:2018:ZXJXYJQUYOOT7C7F5TUGE2JW4P

not attested not anchored not stored refs pending

The optical variability of Supermassive Black Hole Binary Candidate PG1302-102: Periodicity and perturbation in the light curve

Andjelka B. Kovacevic, Dragana Ilic, Luka C. Popovic, Sasa Simic

arxiv:1812.03370 v1 · 2018-12-08 · 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{ZXJXYJQUYOOT7C7F5TUGE2JW4P}

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	2026-05-17T23:55:10.708242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdd37c2614c39d3f8be5ece8626936e3d58cffdc9d1c8a651aadd9e6fdb771cc

Aliases

arxiv: 1812.03370 · arxiv_version: 1812.03370v1 · doi: 10.48550/arxiv.1812.03370 · pith_short_12: ZXJXYJQUYOOT · pith_short_16: ZXJXYJQUYOOT7C7F · pith_short_8: ZXJXYJQU

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/ZXJXYJQUYOOT7C7F5TUGE2JW4P \
  | 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: cdd37c2614c39d3f8be5ece8626936e3d58cffdc9d1c8a651aadd9e6fdb771cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f39dec90f674a9a9b9d04e98cdb91fbd7ae79045e579b10eff54776e43b4619",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-12-08T19:05:28Z",
    "title_canon_sha256": "4ac6b5fc573f878c1247764bdc2019d37a11e830b16df30ddc2ca17b2807cb7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03370",
    "kind": "arxiv",
    "version": 1
  }
}