Pith Number

pith:HOCF6DKL

pith:2012:HOCF6DKL7HNZ4RMU2SGNESVSGZ

not attested not anchored not stored refs pending

The evolution of galaxy sizes

Alessandro Omizzolo, Alessia Moretti, Benedetta Vulcani, Bianca M. Poggianti, Daniela Bettoni, Daniele Bindoni, Gabriella De Lucia, Giovanni Fasano, Jacopo Fritz, Marco Gullieuszik, Mauro D'Onofrio, Rosa Calvi, Tiziano Valentinuzzi

arxiv:1212.3207 v1 · 2012-12-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HOCF6DKL7HNZ4RMU2SGNESVSGZ}

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	2026-05-18T01:52:38.733640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b845f0d4bf9db9e4594d48cd24ab23673daa48788e47537fc9e30b4be87a316

Aliases

arxiv: 1212.3207 · arxiv_version: 1212.3207v1 · doi: 10.48550/arxiv.1212.3207 · pith_short_12: HOCF6DKL7HNZ · pith_short_16: HOCF6DKL7HNZ4RMU · pith_short_8: HOCF6DKL

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/HOCF6DKL7HNZ4RMU2SGNESVSGZ \
  | 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: 3b845f0d4bf9db9e4594d48cd24ab23673daa48788e47537fc9e30b4be87a316

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd3f4863bb7e1c6cd6edd2185d0edc936cd24e0cdf82d5326b38f2da1416e016",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-13T16:13:28Z",
    "title_canon_sha256": "e97bf2b402c20e9fd02f0814940ffe1b80b4525b04980e9b1e6fb1b192dab7bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3207",
    "kind": "arxiv",
    "version": 1
  }
}