Pith Number

pith:DRYTG62K

pith:2012:DRYTG62KNUNPRWECBPBOQHHGKN

not attested not anchored not stored refs pending

Chemical evolution of the Galactic bulge: different stellar populations and possible gradients

A. Pipino, F. Matteucci, G. Cescutti, V. Grieco

arxiv:1209.4462 v1 · 2012-09-20 · 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{DRYTG62KNUNPRWECBPBOQHHGKN}

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	2026-05-18T01:54:20.751978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c71337b4a6d1af8d8820bc2e81ce65353ff098e34415b88402722e848382fc9

Aliases

arxiv: 1209.4462 · arxiv_version: 1209.4462v1 · doi: 10.48550/arxiv.1209.4462 · pith_short_12: DRYTG62KNUNP · pith_short_16: DRYTG62KNUNPRWEC · pith_short_8: DRYTG62K

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/DRYTG62KNUNPRWECBPBOQHHGKN \
  | 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: 1c71337b4a6d1af8d8820bc2e81ce65353ff098e34415b88402722e848382fc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c786c87ea46ca33855839be3f2bed9bd424047046006dcc666534046da3d6bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-09-20T09:07:31Z",
    "title_canon_sha256": "279c23111a43aee434b8c159e8af1ab7dc21546262567b34b9f9888194944f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4462",
    "kind": "arxiv",
    "version": 1
  }
}