Pith Number

pith:2UPKBQ6R

pith:2011:2UPKBQ6RAJLYCQ3WN2LOPMAAGZ

not attested not anchored not stored refs pending

Revisiting Metallicity of Long Duration Gamma-Ray Burst Host Galaxies: The Role of Chemical Inhomogeneity within Galaxies

Yuu Niino

arxiv:1103.1293 v2 · 2011-03-07 · 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{2UPKBQ6RAJLYCQ3WN2LOPMAAGZ}

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	2026-05-18T02:02:58.819494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d51ea0c3d102578143766e96e7b0003675c7f1fd4d82f65210281a8bba54bfa7

Aliases

arxiv: 1103.1293 · arxiv_version: 1103.1293v2 · doi: 10.48550/arxiv.1103.1293 · pith_short_12: 2UPKBQ6RAJLY · pith_short_16: 2UPKBQ6RAJLYCQ3W · pith_short_8: 2UPKBQ6R

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/2UPKBQ6RAJLYCQ3WN2LOPMAAGZ \
  | 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: d51ea0c3d102578143766e96e7b0003675c7f1fd4d82f65210281a8bba54bfa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb46dc7c881fdc7215bc5f154fe520273bb62a448415500ab663a323f98de413",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-07T15:17:05Z",
    "title_canon_sha256": "5a5f05bfb3771b4e91948cc2e7b1c1af92f3458ad8a1cec95558c2e3e1ac58f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1293",
    "kind": "arxiv",
    "version": 2
  }
}