Pith Number

pith:4NA6XFXZ

pith:2013:4NA6XFXZBQI6DWV2KBGQK6RTTU

not attested not anchored not stored refs pending

Bimodal chemical evolution of the Galactic disk and the Barium abundance of Cepheids

Douglas A. Barros, Jacques R.D. Lepine, Sergei Andrievky, Sergio Scarano Jr, Thiago C. Junqueira

arxiv:1307.7781 v1 · 2013-07-30 · 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{4NA6XFXZBQI6DWV2KBGQK6RTTU}

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	2026-05-18T01:48:33.094696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e341eb96f90c11e1daba504d057a339d0c3b022c23f7b72d8a91d42d92e78773

Aliases

arxiv: 1307.7781 · arxiv_version: 1307.7781v1 · doi: 10.48550/arxiv.1307.7781 · pith_short_12: 4NA6XFXZBQI6 · pith_short_16: 4NA6XFXZBQI6DWV2 · pith_short_8: 4NA6XFXZ

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/4NA6XFXZBQI6DWV2KBGQK6RTTU \
  | 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: e341eb96f90c11e1daba504d057a339d0c3b022c23f7b72d8a91d42d92e78773

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0ef4b58163d2476b7d789024a76bb3d071410e16c638a3feaa0cef30a67440d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-07-30T01:51:38Z",
    "title_canon_sha256": "e95070adfb939f885abcdb0edf5fa5d0c0539e9c5d507725a2df37817d71af00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7781",
    "kind": "arxiv",
    "version": 1
  }
}