Pith Number

pith:QTRRYX7T

pith:2001:QTRRYX7TPAYCNF3RBQJBONMTHN

not attested not anchored not stored refs pending

HST Ultraviolet and Ground-based Optical Spectropolarimetry of IRAS QSOs: Dusty Scattering in Luminous AGN

B. J. Wills, D. C. Hines, G. D. Schmidt, K. D. Gordon, M. L. Sitko, P. S. Smith, R. G. Allen

arxiv:astro-ph/0109189 v1 · 2001-09-12 · 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{QTRRYX7TPAYCNF3RBQJBONMTHN}

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	2026-07-04T14:11:28.257090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84e31c5ff378302697710c121735933b54df70f3de059f48213f8f3943ddd501

Aliases

arxiv: astro-ph/0109189 · arxiv_version: astro-ph/0109189v1 · doi: 10.48550/arxiv.astro-ph/0109189 · pith_short_12: QTRRYX7TPAYC · pith_short_16: QTRRYX7TPAYCNF3R · pith_short_8: QTRRYX7T

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/QTRRYX7TPAYCNF3RBQJBONMTHN \
  | 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: 84e31c5ff378302697710c121735933b54df70f3de059f48213f8f3943ddd501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e78bf91f7a83265492c4f08897619fc28d48edd6c42d913ca46d8f8b26e36f6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-12T16:52:30Z",
    "title_canon_sha256": "89de9d81e7af60f9cf03c3e1289454833f7a90b225d89b46d4ff8eb0a10721df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109189",
    "kind": "arxiv",
    "version": 1
  }
}