Pith Number

pith:YQEECEAC

pith:2005:YQEECEACZPZ57XRDKUC4EG7CEV

not attested not anchored not stored refs pending

NOAO Fundamental Plane Survey -- II. Age and Metallicity along the Red Sequence

Gary A. Wegner, Jenica E. Nelan, John R. Lucey, Michael J. Hudson, Nicholas B. Suntzeff, Russell J. Smith, Stephen A. W. Moore, Stephen J. Quinney

arxiv:astro-ph/0505301 v1 · 2005-05-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YQEECEACZPZ57XRDKUC4EG7CEV}

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	2026-05-18T04:23:00.563266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c408411002cbf3dfde235505c21be22556589af77eafec44a578c144f979ff5c

Aliases

arxiv: astro-ph/0505301 · arxiv_version: astro-ph/0505301v1 · doi: 10.48550/arxiv.astro-ph/0505301 · pith_short_12: YQEECEACZPZ5 · pith_short_16: YQEECEACZPZ57XRD · pith_short_8: YQEECEAC

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/YQEECEACZPZ57XRDKUC4EG7CEV \
  | 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: c408411002cbf3dfde235505c21be22556589af77eafec44a578c144f979ff5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "963e2b14610dc543538a9c61a4fc023e4f0afe910fc1b5c29519c9413165a4ce",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-05-13T20:26:53Z",
    "title_canon_sha256": "2db77994122eb48807998409996499706e9efe534a814a4a02116692b1c7d02b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0505301",
    "kind": "arxiv",
    "version": 1
  }
}