Pith Number

pith:WT24RCM4

pith:2009:WT24RCM4EWXP67PNYGCSQUNWCY

not attested not anchored not stored refs pending

The Evolution of Carbon and Oxygen in the Bulge and Disk of the Milky Way

2), (2) I.N.A.F. Osservatorio Astronomico di Trieste, (3) Observatories of the Carnegie Institution of Washington, 4) ((1) Astronomy Department, (4) Observatoire Astronomique de l'Universite' de Geneve), A. McWilliam (3), C. Chiappini (2, F. Matteucci (1, G. Cescutti (1), Trieste University

arxiv:0907.4308 v1 · 2009-07-24 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WT24RCM4EWXP67PNYGCSQUNWCY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:12:53.852307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4f5c8899c25aeff7dedc1852851b616152e8d38cd269cdb411d4473e8594cd7

Aliases

arxiv: 0907.4308 · arxiv_version: 0907.4308v1 · doi: 10.48550/arxiv.0907.4308 · pith_short_12: WT24RCM4EWXP · pith_short_16: WT24RCM4EWXP67PN · pith_short_8: WT24RCM4

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/WT24RCM4EWXP67PNYGCSQUNWCY \
  | 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: b4f5c8899c25aeff7dedc1852851b616152e8d38cd269cdb411d4473e8594cd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccd131e341c22e7e648158a8cb81e4af477525261f7dfc51fd566d922f8c1119",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-07-24T14:49:07Z",
    "title_canon_sha256": "c7ff84484985fd56a7480a066220a0a8542df50b2979a8180ea3f71eebd1a7b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4308",
    "kind": "arxiv",
    "version": 1
  }
}