Pith Number

pith:XPLYDJ2Z

pith:2011:XPLYDJ2ZM7MH6L5LMRHUV45LFF

not attested not anchored not stored refs pending

The X-factor in Galaxies: I. Dependence on Environment and Scale

Andrey V. Kravtsov, Nickolay Y. Gnedin, Robert Feldmann

arxiv:1112.1732 v1 · 2011-12-07 · 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{XPLYDJ2ZM7MH6L5LMRHUV45LFF}

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	2026-05-18T01:59:15.294353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbd781a75967d87f2fab644f4af3ab296fe45fd4ac4afcd8cb87bf5c7647fe80

Aliases

arxiv: 1112.1732 · arxiv_version: 1112.1732v1 · doi: 10.48550/arxiv.1112.1732 · pith_short_12: XPLYDJ2ZM7MH · pith_short_16: XPLYDJ2ZM7MH6L5L · pith_short_8: XPLYDJ2Z

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/XPLYDJ2ZM7MH6L5LMRHUV45LFF \
  | 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: bbd781a75967d87f2fab644f4af3ab296fe45fd4ac4afcd8cb87bf5c7647fe80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8376a963c90fe63324b8a95018bbab31302596382142067cf0a02f2d1a898abc",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-07T23:29:39Z",
    "title_canon_sha256": "30cac6cb59f471f663e7209d048ae85815f09ba425b43d1f172a29064c77ebcd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1732",
    "kind": "arxiv",
    "version": 1
  }
}