Pith Number

pith:5Q2LGZL7

pith:2001:5Q2LGZL7FF24R5KFMZBMY5UOND

not attested not anchored not stored refs pending

Abundance Gradients and the Formation of the Milky Way

(2)Universita di Trieste, (3) SISSA/ISAS - Italy), Cristina Chiappini (1), Donatella Romano (3) ((1) Osservatorio Astronomico di Trieste, Francesca Matteucci (2)

arxiv:astro-ph/0102134 v1 · 2001-02-08 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5Q2LGZL7FF24R5KFMZBMY5UOND}

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	2026-07-04T16:22:41.474549Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec34b3657f2975c8f5456642cc768e68cc2ee0bb21c1a4e01e8e87623e392b5b

Aliases

arxiv: astro-ph/0102134 · arxiv_version: astro-ph/0102134v1 · doi: 10.48550/arxiv.astro-ph/0102134 · pith_short_12: 5Q2LGZL7FF24 · pith_short_16: 5Q2LGZL7FF24R5KF · pith_short_8: 5Q2LGZL7

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/5Q2LGZL7FF24R5KFMZBMY5UOND \
  | 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: ec34b3657f2975c8f5456642cc768e68cc2ee0bb21c1a4e01e8e87623e392b5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a1838f59de690261d3e245b1c13984b0157f74ac42c16f42c8bbbc8e66d0f23",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-02-08T11:10:01Z",
    "title_canon_sha256": "65657c917d2d13ca8d6664ea44bd264d327732ff36c2bbf434b499dc9e48db31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0102134",
    "kind": "arxiv",
    "version": 1
  }
}