Pith Number

pith:QHG3UTLA

pith:2013:QHG3UTLA7DW37MM3XPJRTIY5I2

not attested not anchored not stored refs pending

Cosmological Tests Using GRBs, the Star Formation Rate and Possible Abundance Evolution

Da-Ming Wei, Fulvio Melia, Jun-Jie Wei, Long-long Feng, Xue-Feng Wu

arxiv:1306.4415 v2 · 2013-06-19 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHG3UTLA7DW37MM3XPJRTIY5I2}

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	2026-05-18T01:49:15.062040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81cdba4d60f8edbfb19bbbd319a31d468b91ef7214b1af53956ec016c53879bc

Aliases

arxiv: 1306.4415 · arxiv_version: 1306.4415v2 · doi: 10.48550/arxiv.1306.4415 · pith_short_12: QHG3UTLA7DW3 · pith_short_16: QHG3UTLA7DW37MM3 · pith_short_8: QHG3UTLA

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/QHG3UTLA7DW37MM3XPJRTIY5I2 \
  | 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: 81cdba4d60f8edbfb19bbbd319a31d468b91ef7214b1af53956ec016c53879bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e52fe53853b958b1addfe0e457e788c5ba12ff4a004bb983d2f6ab40bb0d762",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-06-19T03:14:47Z",
    "title_canon_sha256": "37819ac9fe6feb4d716fded5a6d8bea5758272ddec27c1baa54047886cac1511"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4415",
    "kind": "arxiv",
    "version": 2
  }
}