Pith Number

pith:Q2AQUXQ3

pith:2023:Q2AQUXQ3FGUGST2GEJ6VWJJGWE

not attested not anchored not stored refs pending

Abell 1201: Detection of an Ultramassive Black Hole in a Strong Gravitational Lens

Alastair C. Edge, Amy Etherington, Aristeidis Amvrosiadis, Ash Kelly, Conor M. O'Riordan, Jacob A. Kegerreis, James. W. Nightingale, John R. Lucey, Qiuhan He, Richard G. Hayes, Richard J. Massey Richard J. Massey, Russell J. Smith

arxiv:2303.15514 v1 · 2023-03-27 · astro-ph.GA · astro-ph.CO · astro-ph.IM · 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{Q2AQUXQ3FGUGST2GEJ6VWJJGWE}

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	2026-07-05T05:55:24.536253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86810a5e1b29a8694f46227d5b2526b11f28aea045a3b6d438d29f867540cb16

Aliases

arxiv: 2303.15514 · arxiv_version: 2303.15514v1 · doi: 10.48550/arxiv.2303.15514 · pith_short_12: Q2AQUXQ3FGUG · pith_short_16: Q2AQUXQ3FGUGST2G · pith_short_8: Q2AQUXQ3

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/Q2AQUXQ3FGUGST2GEJ6VWJJGWE \
  | 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: 86810a5e1b29a8694f46227d5b2526b11f28aea045a3b6d438d29f867540cb16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3203bd0766798fbbe3b1cad0610a6cb14a556c24d2c862e43c982eda9494dd4",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM",
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-03-27T18:00:05Z",
    "title_canon_sha256": "15f72d2b865f75ec18ce61b886e5c6ef9733ba34e6c7cebb135ea768bd9afde1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.15514",
    "kind": "arxiv",
    "version": 1
  }
}