Pith Number

pith:HYZD7ZTO

pith:2013:HYZD7ZTOYHAQGPOEFRKJSJ4HBT

not attested not anchored not stored refs pending

The stellar IMF determined in early-type galaxies from a non-degenerate set of optical line indices

Charlie Conroy, Chiara Spiniello, L\'eon V.E. Koopmans, Scott Trager

arxiv:1305.2873 v3 · 2013-05-13 · 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{HYZD7ZTOYHAQGPOEFRKJSJ4HBT}

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	2026-05-18T01:50:02.823252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e323fe66ec1c1033dc42c549927870ce765a87363e8b1fa1526cb841239f103

Aliases

arxiv: 1305.2873 · arxiv_version: 1305.2873v3 · doi: 10.48550/arxiv.1305.2873 · pith_short_12: HYZD7ZTOYHAQ · pith_short_16: HYZD7ZTOYHAQGPOE · pith_short_8: HYZD7ZTO

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/HYZD7ZTOYHAQGPOEFRKJSJ4HBT \
  | 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: 3e323fe66ec1c1033dc42c549927870ce765a87363e8b1fa1526cb841239f103

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2486e5faf1181fc06c36a11505b1ef3f52a33abe1ed30327fe7fa3d338993ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-05-13T17:50:20Z",
    "title_canon_sha256": "442440ab28c9d3ea55f5b0cc54e4674a01e861b454da327ca4efd4bfd46fdf13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2873",
    "kind": "arxiv",
    "version": 3
  }
}