Pith Number

pith:X2GVCSCX

pith:2010:X2GVCSCXAQRPNLQ6VIIEQPENLC

not attested not anchored not stored refs pending

Origin of CEMP stars: What helium and lithium can tell us about CEMP stars?

Andre Maeder, Cristina Chiappini, Cyril Georgy, Georges Meynet, Patrick Eggenberger, Raphael Hirschi, Sylvia Ekstrom

arxiv:1001.1864 v1 · 2010-01-12 · astro-ph.SR · 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{X2GVCSCXAQRPNLQ6VIIEQPENLC}

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	2026-05-18T00:33:26.698258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be8d5148570422f6ae1eaa10483c8d58820ab32a05811a547d4f821fbc2fc38d

Aliases

arxiv: 1001.1864 · arxiv_version: 1001.1864v1 · doi: 10.48550/arxiv.1001.1864 · pith_short_12: X2GVCSCXAQRP · pith_short_16: X2GVCSCXAQRPNLQ6 · pith_short_8: X2GVCSCX

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/X2GVCSCXAQRPNLQ6VIIEQPENLC \
  | 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: be8d5148570422f6ae1eaa10483c8d58820ab32a05811a547d4f821fbc2fc38d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b2084943796c5d9bf541c349e404b07f4d2a36f2743a947071bc99a7a6cf57b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-01-12T12:28:12Z",
    "title_canon_sha256": "9a609ff7d11ad65e2bcded606fcb255b89c96a3ecaa45f4d11a18dabd070a5a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.1864",
    "kind": "arxiv",
    "version": 1
  }
}