Pith Number

pith:2GU5HSFP

pith:2013:2GU5HSFPZ7VRG3EKMVIXOGEGYC

not attested not anchored not stored refs pending

Fossil Evidence for the Two-phase Formation of Elliptical Galaxies

2, (2) The Observatories of the Carnegie Institution for Science, 3), (3) Key Laboratory of Modern Astronomy, (4) Giant Magellan Telescope Organization, (5) Key Laboratory for Research in Galaxies, (6) Department of Physics, Aaron J. Barth (6) ((1) School of Astronomy, Astronomy, Astrophysics, Chien Y. Peng (4), Cosmology, Irvine), Luis C. Ho (2), Nanjing University, Shanghai Astronomical Observatory, Song Huang (1, Space Science, University of California, Zhao-Yu Li (5)

arxiv:1304.2299 v2 · 2013-04-08 · astro-ph.CO · 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{2GU5HSFPZ7VRG3EKMVIXOGEGYC}

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	2026-05-18T03:25:14.045094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1a9d3c8afcfeb136c8a6551771886c0a5b900f27a29abdd2bd01fe674988761

Aliases

arxiv: 1304.2299 · arxiv_version: 1304.2299v2 · doi: 10.48550/arxiv.1304.2299 · pith_short_12: 2GU5HSFPZ7VR · pith_short_16: 2GU5HSFPZ7VRG3EK · pith_short_8: 2GU5HSFP

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/2GU5HSFPZ7VRG3EKMVIXOGEGYC \
  | 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: d1a9d3c8afcfeb136c8a6551771886c0a5b900f27a29abdd2bd01fe674988761

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9026c4f5532066d0f6a68544b49a51de85bc7045a320567543c470692078cc5a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-08T18:31:26Z",
    "title_canon_sha256": "ea06760a135fee5f447d6557ff747148556e9e92680e7b641a4cbb7509aa7dd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2299",
    "kind": "arxiv",
    "version": 2
  }
}