Pith Number

pith:XJ2DUS6S

pith:2020:XJ2DUS6SQGIEVGN2IO4OBG3E4U

not attested not anchored not stored refs pending

Building the largest spectroscopic sample of ultra-compact massive galaxies with the Kilo Degree Survey

Carlo Enrico Petrillo, Chiara Spiniello, Crescenzo Tortora, Diana Scognamiglio, Fedor Getman, Francesco La Barbera, Giuseppe D'Ago, Giuseppe Longo, Koen H. Kuijken, Leon V. E. Koopmans, Maria Angela Raj, Marilena Spavone, Mario Radovich, Massimo Brescia, Nicola R. Napolitano, Nivya Roy, Stefano Cavuoti

arxiv:2002.12922 v1 · 2020-02-28 · 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{XJ2DUS6SQGIEVGN2IO4OBG3E4U}

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	2026-07-05T00:54:32.883330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba743a4bd281904a99ba43b8e09b64e518c925a7b3c78c84a8aaeb031a01078b

Aliases

arxiv: 2002.12922 · arxiv_version: 2002.12922v1 · doi: 10.48550/arxiv.2002.12922 · pith_short_12: XJ2DUS6SQGIE · pith_short_16: XJ2DUS6SQGIEVGN2 · pith_short_8: XJ2DUS6S

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/XJ2DUS6SQGIEVGN2IO4OBG3E4U \
  | 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: ba743a4bd281904a99ba43b8e09b64e518c925a7b3c78c84a8aaeb031a01078b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f063daf2e7314db2d5cc49d5d4bf0b4e3fb3bb6630bee174b5c034beee1cccd4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-02-28T18:52:04Z",
    "title_canon_sha256": "72b191869ab85d7feb0a54537b48da18f0a811cdfd53f3ddfebe02acff81f323"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.12922",
    "kind": "arxiv",
    "version": 1
  }
}