Pith Number

pith:PUNPNPP6

pith:2003:PUNPNPP6QXYSGZBK37RH6CQMLT

not attested not anchored not stored refs pending

Early-type galaxies in the SDSS. IV. Colors and chemical evolution

D. J. Schlegel, D. P. Finkbeiner, et al, J. Annis, M. Bernardi, M. Subbarao, R. H. Lupton, R. K. Sheth, S. Burles

arxiv:astro-ph/0301629 v1 · 2003-01-30 · 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{PUNPNPP6QXYSGZBK37RH6CQMLT}

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	2026-05-18T04:23:01.000587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d1af6bdfe85f123642adfe27f0a0c5cd2f5d88eb23a6d8dfeabd151e243bd9c

Aliases

arxiv: astro-ph/0301629 · arxiv_version: astro-ph/0301629v1 · doi: 10.48550/arxiv.astro-ph/0301629 · pith_short_12: PUNPNPP6QXYS · pith_short_16: PUNPNPP6QXYSGZBK · pith_short_8: PUNPNPP6

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/PUNPNPP6QXYSGZBK37RH6CQMLT \
  | 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: 7d1af6bdfe85f123642adfe27f0a0c5cd2f5d88eb23a6d8dfeabd151e243bd9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f174f4d8e70fc6422ea3d657640fdec523963fc941f2258721184572c8047e84",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-01-30T21:24:28Z",
    "title_canon_sha256": "104d9530ee5a8e662a0ea6d79768b4e40d596eaeb049dbfef71327d8efe864c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0301629",
    "kind": "arxiv",
    "version": 1
  }
}