Pith Number

pith:OVWCGEQY

pith:2003:OVWCGEQYBI3RBINUHUWMLSMRVL

not attested not anchored not stored refs pending

Emission line widths and QSO black hole mass estimates from the 2dF QSO Redshift Survey

(2) Tel-Aviv, (3) Oxford, (4) Durham, (5) LJMU, 6) ((1) AAO, (6) Melbourne), B. J. Boyle (1), E. A. Corbett (1), H. Netzer (2), K. Rhook (1, L. Miller (3), P. J. Outram (4), R. J. Smith (5), S. M. Croom (1), T. Shanks (4)

arxiv:astro-ph/0304541 v1 · 2003-04-29 · 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{OVWCGEQYBI3RBINUHUWMLSMRVL}

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	2026-05-18T04:27:04.802345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

756c2312180a3710a1b43d2cc5c991aad6d5d185cfd5139be181d6ab15e4cd81

Aliases

arxiv: astro-ph/0304541 · arxiv_version: astro-ph/0304541v1 · doi: 10.48550/arxiv.astro-ph/0304541 · pith_short_12: OVWCGEQYBI3R · pith_short_16: OVWCGEQYBI3RBINU · pith_short_8: OVWCGEQY

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/OVWCGEQYBI3RBINUHUWMLSMRVL \
  | 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: 756c2312180a3710a1b43d2cc5c991aad6d5d185cfd5139be181d6ab15e4cd81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1aafb15cf7642bd52775e83e501939164b90bf1557817e0aa4dcf0f45e546ed0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-29T23:10:33Z",
    "title_canon_sha256": "218eda4ace8760a9842ecad40faed9c09bb848d0d28f98a26b7761adb2940526"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304541",
    "kind": "arxiv",
    "version": 1
  }
}