Pith Number

pith:JGZ5XYEQ

pith:1995:JGZ5XYEQF5ZOVP4KFLAJRXHDZX

not attested not anchored not stored refs pending

STELLAR POPULATION GRADIENTS IN BRIGHT CLUSTER GALAXIES AT z=0.2

M. Grinder, T.J. Davidge

arxiv:astro-ph/9501106 v1 · 1995-01-30 · 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{JGZ5XYEQF5ZOVP4KFLAJRXHDZX}

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	2026-05-18T01:07:42.508600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49b3dbe0902f72eabf8a2ac098dce3cdd344797efa86457663d0dece465d4004

Aliases

arxiv: astro-ph/9501106 · arxiv_version: astro-ph/9501106v1 · doi: 10.48550/arxiv.astro-ph/9501106 · pith_short_12: JGZ5XYEQF5ZO · pith_short_16: JGZ5XYEQF5ZOVP4K · pith_short_8: JGZ5XYEQ

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/JGZ5XYEQF5ZOVP4KFLAJRXHDZX \
  | 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: 49b3dbe0902f72eabf8a2ac098dce3cdd344797efa86457663d0dece465d4004

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2b1cba178e189b3ccec6dfb89dc4f4244d076dd752f261f2fb2cea61bec5646",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-01-30T21:20:15Z",
    "title_canon_sha256": "c60a7da537122bc8f047ad0a27e11328764f452ac4d6f0ab06d920be0c2a8d2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9501106",
    "kind": "arxiv",
    "version": 1
  }
}