Pith Number

pith:DZ3KT4LO

pith:2002:DZ3KT4LOL4OEFTJ3KLFXJI7BYQ

not attested not anchored not stored refs pending

Excursions into the Evolution of Early-Type Galaxies in Clusters

(2)CADC, (3)PUC, (4)U. Toronto, (5)U. Tokyo), David Schade (2), H.K.C. Yee (4), L. Felipe Barrientos (3), Michael D. Gladders (4), Omar Lopez-Cruz (1), & Tadayuki Kodama (5) ((1)INAOE-Tonantzintla

arxiv:astro-ph/0205518 v1 · 2002-05-30 · 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{DZ3KT4LOL4OEFTJ3KLFXJI7BYQ}

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	2026-05-18T01:21:50.453357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e76a9f16e5f1c42cd3b52cb74a3e1c41512d78fd4d028aabb5e0f1708af224c

Aliases

arxiv: astro-ph/0205518 · arxiv_version: astro-ph/0205518v1 · doi: 10.48550/arxiv.astro-ph/0205518 · pith_short_12: DZ3KT4LOL4OE · pith_short_16: DZ3KT4LOL4OEFTJ3 · pith_short_8: DZ3KT4LO

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/DZ3KT4LOL4OEFTJ3KLFXJI7BYQ \
  | 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: 1e76a9f16e5f1c42cd3b52cb74a3e1c41512d78fd4d028aabb5e0f1708af224c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cefbfcf93cb0c573fad750d7bd8878e1f4c437c151874d56d9f183212f10faef",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-30T00:13:57Z",
    "title_canon_sha256": "ad4ce2298cd0df17f7542e5cc45118b232330267e127c83323ebb54808be8109"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205518",
    "kind": "arxiv",
    "version": 1
  }
}