Pith Number

pith:QCGCN554

pith:2012:QCGCN554N5YIJNTILSDS2OGAG2

not attested not anchored not stored refs pending

The explosion energy of early stellar populations: The Fe-peak element ratios in low metallicity damped Lyman-alpha systems

2), (2) Institute of Astronomy, (3) Institute for Astronomy, (4) Swinburne University of Technology, (5) California Institute of Technology), Charles C. Steidel (5) ((1) University of California, Gwen C. Rudie (5), Max Pettini (2), Michael T. Murphy (4), Regina A. Jorgenson (3), Ryan Cooke (1, Santa Cruz, University of Cambridge, University of Hawaii

arxiv:1211.2805 v3 · 2012-11-12 · astro-ph.CO · 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{QCGCN554N5YIJNTILSDS2OGAG2}

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	2026-05-18T01:53:16.540942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

808c26f7bc6f7084b6685c872d38c03698475941092a7ea6549301ae961ea852

Aliases

arxiv: 1211.2805 · arxiv_version: 1211.2805v3 · doi: 10.48550/arxiv.1211.2805 · pith_short_12: QCGCN554N5YI · pith_short_16: QCGCN554N5YIJNTI · pith_short_8: QCGCN554

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/QCGCN554N5YIJNTILSDS2OGAG2 \
  | 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: 808c26f7bc6f7084b6685c872d38c03698475941092a7ea6549301ae961ea852

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4a032af175ffa02e607fcc9be2560f25d3f37ec6be2d3eafb080c4cd058c050",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-12T21:00:01Z",
    "title_canon_sha256": "e5513fafb9843b1542f134952894352c1254d3f2f001f22dc7b5d8530c8e2ca2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2805",
    "kind": "arxiv",
    "version": 3
  }
}