Pith Number

pith:OW2OQAFX

pith:2011:OW2OQAFXHUORM2CF4CTR6XYOCH

not attested not anchored not stored refs pending

Chemical element ratios of SDSS early-type galaxies

Claudia Maraston (ICG Portsmouth), Daniel Thomas (ICG Portsmouth), Jonas Johansson (ICG Portsmouth, MPA Garching)

arxiv:1112.0322 v2 · 2011-12-01 · 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{OW2OQAFXHUORM2CF4CTR6XYOCH}

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	2026-05-18T01:59:20.082754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75b4e800b73d1d166845e0a71f5f0e11f4a8c5b8e3b1144859050c06f920e1f8

Aliases

arxiv: 1112.0322 · arxiv_version: 1112.0322v2 · doi: 10.48550/arxiv.1112.0322 · pith_short_12: OW2OQAFXHUOR · pith_short_16: OW2OQAFXHUORM2CF · pith_short_8: OW2OQAFX

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/OW2OQAFXHUORM2CF4CTR6XYOCH \
  | 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: 75b4e800b73d1d166845e0a71f5f0e11f4a8c5b8e3b1144859050c06f920e1f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edd8bcfbaab6a6e74572f8d3aea68fcc30a6088410fb4a54bd37706d2bd12da8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-01T21:00:10Z",
    "title_canon_sha256": "c445c167c39d2c3dade765dade1cc0a04bf265c917cca41eb01ef83661478d0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.0322",
    "kind": "arxiv",
    "version": 2
  }
}