Pith Number

pith:WPPD4OXF

pith:2009:WPPD4OXFRMZUTXFQD4NWDNEBNS

not attested not anchored not stored refs pending

Detailed Characterization of H_beta emission line profile in low z SDSS quasars

2), D. Dultzin (4) ((1) Univ. of Alabama, Granada, Italy; (4) Instituto de Astronomia, J. W. Sulentic (1, Mexico), Mexico City, P. Marziani (3), Spain; (3) INAF-Osservatorio Astronomico di Padova, S. Zamfir (1), Tuscaloosa, UNAM, USA; (2) Instituto de Astrofisica de Andalucia

arxiv:0912.4306 v1 · 2009-12-22 · 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{WPPD4OXFRMZUTXFQD4NWDNEBNS}

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	2026-05-18T02:10:14.782143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3de3e3ae58b3349dcb01f1b61b4816c9dfc172f2678a3a69a54e8aa735d488b

Aliases

arxiv: 0912.4306 · arxiv_version: 0912.4306v1 · doi: 10.48550/arxiv.0912.4306 · pith_short_12: WPPD4OXFRMZU · pith_short_16: WPPD4OXFRMZUTXFQ · pith_short_8: WPPD4OXF

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/WPPD4OXFRMZUTXFQD4NWDNEBNS \
  | 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: b3de3e3ae58b3349dcb01f1b61b4816c9dfc172f2678a3a69a54e8aa735d488b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a0abc1f577cfc58a7a3f6d2764f00e6a0b6f7a6f80d58fea218ecfd575374fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-22T01:07:29Z",
    "title_canon_sha256": "d903be91ca7cbf735972622c6d2166ef9bbe4e6d89c8a0b547e58063f90f3e9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4306",
    "kind": "arxiv",
    "version": 1
  }
}