Pith Number

pith:YYNTKR5B

pith:2011:YYNTKR5BZEYGSSBMMA2YBPD3MQ

not attested not anchored not stored refs pending

Evidence for a non-universal stellar initial mass function in low-redshift high-density early-type galaxies

Aaron A. Dutton (UVic/UCSB/MPIA), J. Trevor Mendel (UVic), Luc Simard (HIA)

arxiv:1111.2905 v2 · 2011-11-12 · astro-ph.CO · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YYNTKR5BZEYGSSBMMA2YBPD3MQ}

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	2026-05-18T01:59:39.812253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c61b3547a1c93069482c603580bc7b641bedd62319c018b72a20d30c7831edda

Aliases

arxiv: 1111.2905 · arxiv_version: 1111.2905v2 · doi: 10.48550/arxiv.1111.2905 · pith_short_12: YYNTKR5BZEYG · pith_short_16: YYNTKR5BZEYGSSBM · pith_short_8: YYNTKR5B

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/YYNTKR5BZEYGSSBMMA2YBPD3MQ \
  | 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: c61b3547a1c93069482c603580bc7b641bedd62319c018b72a20d30c7831edda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9159623efd23f789113f18a2eef3cf40071521163bae5669bc89a3efe2b1dbc3",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-12T07:47:01Z",
    "title_canon_sha256": "bcd74bf8486e0d654e25531f43ae37a20498cbbe81719b2d664c6a3519f06261"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2905",
    "kind": "arxiv",
    "version": 2
  }
}