Pith Number

pith:BPGLESOZ

pith:2012:BPGLESOZOSGUPPTFMDWQAW3ZYZ

not attested not anchored not stored refs pending

Broad Absorption Line Disappearance on Multi-Year Timescales in a Large Quasar Sample

A. D. Myers, A. E. Simmons, B. A. Weaver, B. F. Lundgren, D. Bizyaev, D. G. York, D. J. Oravetz, D. P. Schneider, E. Malanushenko, J. Brinkmann, K. Pan, N. Filiz Ak, Nicholas P. Ross, P. B. Hall, P. Petitjean, R. R. Gibson, S. F. Anderson, W. N. Brandt, Yue Shen

arxiv:1208.0836 v1 · 2012-08-03 · 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{BPGLESOZOSGUPPTFMDWQAW3ZYZ}

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	2026-05-18T01:55:23.129082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bccb249d9748d47be6560ed005b79c64457fe67eab8556f7719f0a00f748411

Aliases

arxiv: 1208.0836 · arxiv_version: 1208.0836v1 · doi: 10.48550/arxiv.1208.0836 · pith_short_12: BPGLESOZOSGU · pith_short_16: BPGLESOZOSGUPPTF · pith_short_8: BPGLESOZ

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/BPGLESOZOSGUPPTFMDWQAW3ZYZ \
  | 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: 0bccb249d9748d47be6560ed005b79c64457fe67eab8556f7719f0a00f748411

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99d026fcb9866fc6f79c91319c081a9f8be35bd0a195eaaae4857f20d50cb537",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-03T20:04:42Z",
    "title_canon_sha256": "afae0a43d76c7d4f7eeff422f23746283f17280feb5fca9ce3fd9d71fb682f86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0836",
    "kind": "arxiv",
    "version": 1
  }
}