Pith Number

pith:5IWAHSNI

pith:2015:5IWAHSNIBA3AIETXLPKMJUSHQH

not attested not anchored not stored refs pending

Variability of broad absorption lines in a QSO SDSS J022844.09+000217.0 on multi-year timescales

Institute of Theoretical Physics, Nanjing Normal University), Wei-Hao Bian, Xiao-Lei Jiang, Yue-Feng Wang (Department of Physics, Zhi-Cheng He

arxiv:1509.03694 v1 · 2015-09-12 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5IWAHSNIBA3AIETXLPKMJUSHQH}

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	2026-05-18T01:03:20.280363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea2c03c9a808360412775bd4c4d24781d0b60c53b5189b0e341c2f8345d446f1

Aliases

arxiv: 1509.03694 · arxiv_version: 1509.03694v1 · doi: 10.48550/arxiv.1509.03694 · pith_short_12: 5IWAHSNIBA3A · pith_short_16: 5IWAHSNIBA3AIETX · pith_short_8: 5IWAHSNI

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/5IWAHSNIBA3AIETXLPKMJUSHQH \
  | 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: ea2c03c9a808360412775bd4c4d24781d0b60c53b5189b0e341c2f8345d446f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bc84478a734ff34efdfaab544de34235b45847253cef598f298edd3a5924981",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-12T02:02:31Z",
    "title_canon_sha256": "728b0e95006f49b587d9902aafe6fe4a2af1c3bf7483a9497a17b7652e5abbbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03694",
    "kind": "arxiv",
    "version": 1
  }
}