Pith Number

pith:KAFFMI67

pith:2011:KAFFMI67PDB4WMVGQFS2YUXAYC

not attested not anchored not stored refs pending

Testing black hole no-hair theorem with OJ287

A. Gopakumar, H. J.Lehto, J. Polednikova, M. J.Valtonen, R. Hudec, S. Mikkola

arxiv:1108.5861 v1 · 2011-08-30 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KAFFMI67PDB4WMVGQFS2YUXAYC}

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	2026-05-18T02:00:44.871012Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

500a5623df78c3cb32a68165ac52e0c084a1e3274fe3305fd67b1e9b5f0f6bbd

Aliases

arxiv: 1108.5861 · arxiv_version: 1108.5861v1 · doi: 10.48550/arxiv.1108.5861 · pith_short_12: KAFFMI67PDB4 · pith_short_16: KAFFMI67PDB4WMVG · pith_short_8: KAFFMI67

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/KAFFMI67PDB4WMVGQFS2YUXAYC \
  | 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: 500a5623df78c3cb32a68165ac52e0c084a1e3274fe3305fd67b1e9b5f0f6bbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f84762b3db19aac55bf85764da3176f989a71f6865b977e152e9afeec88d3beb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-30T08:00:26Z",
    "title_canon_sha256": "1bdd7a51c2f13edd090f9507903d5e6712a2ba47983a9427df05b8a2bd9c8aaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5861",
    "kind": "arxiv",
    "version": 1
  }
}