Pith Number

pith:EHV2WVMJ

pith:2024:EHV2WVMJUVL5YLM6PCIJJVEMOF

not attested not anchored not stored refs pending

The first robust evidence showing a dark matter density spike around the supermassive black hole in OJ 287

Chak Man Lee, Man Ho Chan

arxiv:2402.03751 v1 · 2024-02-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EHV2WVMJUVL5YLM6PCIJJVEMOF}

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

2 papers in Pith

Dipole Radiation and Kinetic Mixing from Dark Photon Solitons

Formation and Redshift Evolution of Dark Matter Spikes

Receipt and verification

First computed	2026-07-05T08:13:12.129401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21ebab5589a557dc2d9e789094d48c7157dd1a81d92f64acf753decbcd7ec860

Aliases

arxiv: 2402.03751 · arxiv_version: 2402.03751v1 · doi: 10.48550/arxiv.2402.03751 · pith_short_12: EHV2WVMJUVL5 · pith_short_16: EHV2WVMJUVL5YLM6 · pith_short_8: EHV2WVMJ

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/EHV2WVMJUVL5YLM6PCIJJVEMOF \
  | 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: 21ebab5589a557dc2d9e789094d48c7157dd1a81d92f64acf753decbcd7ec860

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c286f9fe79b45f28f488ef11af4c49fcfa1c180c1b413eef7b8f441de303f62",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2024-02-06T06:41:14Z",
    "title_canon_sha256": "70ae5c5d39ec8aa554e92bbcabcc0975681e0d4a3bf3b5468e7a36e3c92969eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.03751",
    "kind": "arxiv",
    "version": 1
  }
}