Pith Number

pith:YPMG3EZE

pith:2012:YPMG3EZENE2URWXC352XR462MN

not attested not anchored not stored refs pending

Abundance determination from global emission-line SDSS spectra: exploring objects with high N/O ratios

Denmark), J.M. Vilchez (IAA, L. Mattsson (University of Copenhagen, L.S. Pilyugin (MAO, Spain), T.X. Thuan (University of Virginia), Ukraine)

arxiv:1201.1554 v1 · 2012-01-07 · 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{YPMG3EZENE2URWXC352XR462MN}

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	2026-05-18T01:58:54.534574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3d86d9324693548dae2df7578f3da635f82c67d328c6959cbf72c76cbe00732

Aliases

arxiv: 1201.1554 · arxiv_version: 1201.1554v1 · doi: 10.48550/arxiv.1201.1554 · pith_short_12: YPMG3EZENE2U · pith_short_16: YPMG3EZENE2URWXC · pith_short_8: YPMG3EZE

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/YPMG3EZENE2URWXC352XR462MN \
  | 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: c3d86d9324693548dae2df7578f3da635f82c67d328c6959cbf72c76cbe00732

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "646cdb1e1acc2ddd31e172dd7ed2bf0ab6b3aedbaf50b20a8b546e5e1b039f00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-07T13:03:23Z",
    "title_canon_sha256": "1724ef955f0e2147f802ae85ec4bea4b5db3caacbef1744c7259f791229e28b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1554",
    "kind": "arxiv",
    "version": 1
  }
}