Pith Number

pith:LWJY43EH

pith:2018:LWJY43EHJFY5QBLNAKZJ6TJUL7

not attested not anchored not stored refs pending

Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters

A. Gopakumar, A. V. Filippenko (for the OJ 287-15/16 Collaboration), Lankeswar Dey, M. J. Valtonen, P. Pihajoki, R. Hudec, S. Ciprini, S. Zola

arxiv:1808.09309 v1 · 2018-08-28 · astro-ph.HE · astro-ph.GA · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LWJY43EHJFY5QBLNAKZJ6TJUL7}

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	2026-07-04T23:55:08.345354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d938e6c874971d8056d02b29f4d345ff9b70adc548aec0d4ca1d0794b8469eb

Aliases

arxiv: 1808.09309 · arxiv_version: 1808.09309v1 · doi: 10.48550/arxiv.1808.09309 · pith_short_12: LWJY43EHJFY5 · pith_short_16: LWJY43EHJFY5QBLN · pith_short_8: LWJY43EH

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/LWJY43EHJFY5QBLNAKZJ6TJUL7 \
  | 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: 5d938e6c874971d8056d02b29f4d345ff9b70adc548aec0d4ca1d0794b8469eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd2b2ee48bcca5681e1d8a061f37948d1d96f944c41abe797f5e0738eaf3d06d",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-08-28T14:05:34Z",
    "title_canon_sha256": "3db469c6003280997cd016b6d25c265313445d1c5d93cb5b5b94ffe961899ed8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09309",
    "kind": "arxiv",
    "version": 1
  }
}