Pith Number

pith:QOUKQRX7

pith:2007:QOUKQRX7B6GLSRGXMKUY66SEIQ

not attested not anchored not stored refs pending

The Baryon Fractions and Mass-to-Light Ratios of Early-Type Galaxies

C.S. Kochanek, Guangfei Jiang

arxiv:0705.3647 v1 · 2007-05-24 · 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{QOUKQRX7B6GLSRGXMKUY66SEIQ}

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	2026-07-04T17:03:57.829260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83a8a846ff0f8cb944d762a98f7a44440f76d581a7d7a272c0689f88182151f9

Aliases

arxiv: 0705.3647 · arxiv_version: 0705.3647v1 · doi: 10.48550/arxiv.0705.3647 · pith_short_12: QOUKQRX7B6GL · pith_short_16: QOUKQRX7B6GLSRGX · pith_short_8: QOUKQRX7

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/QOUKQRX7B6GLSRGXMKUY66SEIQ \
  | 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: 83a8a846ff0f8cb944d762a98f7a44440f76d581a7d7a272c0689f88182151f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c074ce629ba9f629984f5790fc597cecf30d0395d80df1888806bdaf637aec8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-24T19:17:09Z",
    "title_canon_sha256": "e2d8ec299b9f862b1e465aee251f8909f8a87d03ae630d5f2f511e930c67677b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.3647",
    "kind": "arxiv",
    "version": 1
  }
}