Pith Number

pith:DMPUNQ6R

pith:2009:DMPUNQ6R7FO5S7OTYUSET32KOZ

not attested not anchored not stored refs pending

On the Color Magnitude Relation of Early-type Galaxies

Joachim Janz, Thorsten Lisker

arxiv:0903.5301 v2 · 2009-03-30 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DMPUNQ6R7FO5S7OTYUSET32KOZ}

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	2026-05-18T04:29:15.495901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b1f46c3d1f95dd97dd3c52449ef4a765e9c346cfbee8bf17d669cd05cb8d63b

Aliases

arxiv: 0903.5301 · arxiv_version: 0903.5301v2 · doi: 10.48550/arxiv.0903.5301 · pith_short_12: DMPUNQ6R7FO5 · pith_short_16: DMPUNQ6R7FO5S7OT · pith_short_8: DMPUNQ6R

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/DMPUNQ6R7FO5S7OTYUSET32KOZ \
  | 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: 1b1f46c3d1f95dd97dd3c52449ef4a765e9c346cfbee8bf17d669cd05cb8d63b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d99ec08b9f0d45928d1e0245130699d01ab0d2a6ed3acb3dedc5d6aa01f451d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-30T20:00:21Z",
    "title_canon_sha256": "de0b28facd6d7455eea4abf3e05177cd2a5392856589d07fbf1a2655d86b8ce6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.5301",
    "kind": "arxiv",
    "version": 2
  }
}