Pith Number

pith:2IRQAE5X

pith:2013:2IRQAE5XF4KIW537LXMLWFHMN3

not attested not anchored not stored refs pending

The evolution of the number density of compact galaxies

A. Moretti, A. Renzini, B.M. Poggianti, J. Fritz, M. D'Onofrio, R. Calvi, T. Valentinuzzi

arxiv:1309.2427 v1 · 2013-09-10 · 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{2IRQAE5XF4KIW537LXMLWFHMN3}

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	2026-05-18T01:47:43.843188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2230013b72f148b777f5dd8bb14ec6ee78e285dfc15c57cda607b3122b04bbf

Aliases

arxiv: 1309.2427 · arxiv_version: 1309.2427v1 · doi: 10.48550/arxiv.1309.2427 · pith_short_12: 2IRQAE5XF4KI · pith_short_16: 2IRQAE5XF4KIW537 · pith_short_8: 2IRQAE5X

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/2IRQAE5XF4KIW537LXMLWFHMN3 \
  | 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: d2230013b72f148b777f5dd8bb14ec6ee78e285dfc15c57cda607b3122b04bbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5ffa5ba0343b32f1789ea76d98e449ecd70e59d9ba85fbb2dfb166bf9a4efa7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-10T09:26:11Z",
    "title_canon_sha256": "6e41244f3ebe39e729d6cf78dcebf45007cb9c1ec946f51d852ddd4db69023ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2427",
    "kind": "arxiv",
    "version": 1
  }
}