Pith Number

pith:HDJ4CCFD

pith:2002:HDJ4CCFDOSRFBOQ2YQ7VTNRLE7

not attested not anchored not stored refs pending

The Epochs of Early-Type Galaxy Formation in Clusters and in the Field

Claudia Maraston, Daniel Thomas, Munich), & Ralf Bender (USM

arxiv:astro-ph/0202166 v1 · 2002-02-07 · 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{HDJ4CCFDOSRFBOQ2YQ7VTNRLE7}

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.

Cited by

1 paper in Pith

Chemical Evolution of Galaxies: Past, Present and Future

Receipt and verification

First computed	2026-07-04T14:11:53.539532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38d3c108a374a250ba1ac43f59b62b27f5c51365d63cd7317dae9aa2ef18475d

Aliases

arxiv: astro-ph/0202166 · arxiv_version: astro-ph/0202166v1 · doi: 10.48550/arxiv.astro-ph/0202166 · pith_short_12: HDJ4CCFDOSRF · pith_short_16: HDJ4CCFDOSRFBOQ2 · pith_short_8: HDJ4CCFD

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/HDJ4CCFDOSRFBOQ2YQ7VTNRLE7 \
  | 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: 38d3c108a374a250ba1ac43f59b62b27f5c51365d63cd7317dae9aa2ef18475d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1562e8dd55e1fa91ea7a246f43a47a3d970dd54b487aedfdc2728ec3d278738",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-07T21:06:51Z",
    "title_canon_sha256": "b9de0b3971e2f9d3be73db2ab843f5cf7c617d03a3dc5c3d81d1b5c7a261b5a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202166",
    "kind": "arxiv",
    "version": 1
  }
}