Pith Number

pith:3532OV3V

pith:2005:3532OV3V3ZYOKADC34ORAUSUHW

not attested not anchored not stored refs pending

Evidence for the presence of dust in intervening QSO absorbers from the Sloan Digital Sky Survey

A. Kumar, A. P. S.Crotts, B. Baugher, B. Lundgren, B. Menard, & C.W. Yip, D. E. Welty, D. G. York, D. Turnshek, D. Vanden Berk, E. B. Jenkins, G. T. Richards, J. T. Lauroesch, J. Vanlandingha, N. Shanidze, P. B. Hall, P. Khare, S. Rao, V. P. Kulkarni, Y. Alsayyad

arxiv:astro-ph/0504532 v1 · 2005-04-25 · 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{3532OV3V3ZYOKADC34ORAUSUHW}

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	2026-07-04T16:52:15.167367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df77a75775de70e50062df1d1052543d95c42399b586effc398c6cf091e227ac

Aliases

arxiv: astro-ph/0504532 · arxiv_version: astro-ph/0504532v1 · doi: 10.48550/arxiv.astro-ph/0504532 · pith_short_12: 3532OV3V3ZYO · pith_short_16: 3532OV3V3ZYOKADC · pith_short_8: 3532OV3V

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/3532OV3V3ZYOKADC34ORAUSUHW \
  | 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: df77a75775de70e50062df1d1052543d95c42399b586effc398c6cf091e227ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aef324bb220cf43bef7fe1147ea1b66daf4feb3b3804b7f5ed84dabff99ded9f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-25T05:40:22Z",
    "title_canon_sha256": "e14dbabf2acca6e7543e886c30e1c768bfbed5510b8885c496d93d38dc76ad72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504532",
    "kind": "arxiv",
    "version": 1
  }
}