Pith Number

pith:VHQR3SMH

pith:2012:VHQR3SMH2FG3ZA3QL7E6EZ5QA3

not attested not anchored not stored refs pending

Discovery of Balmer Broad Absorption Lines in the Quasar LBQS 1206+1052

Hongyan Zhou, Huiyuan Wang, Tinggui Wang, Tuo Ji

arxiv:1201.1054 v1 · 2012-01-05 · 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{VHQR3SMH2FG3ZA3QL7E6EZ5QA3}

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	2026-05-18T01:58:57.433229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9e11dc987d14dbc83705fc9e267b006cb99444bbbf7c313662031aeda9fa9dc

Aliases

arxiv: 1201.1054 · arxiv_version: 1201.1054v1 · doi: 10.48550/arxiv.1201.1054 · pith_short_12: VHQR3SMH2FG3 · pith_short_16: VHQR3SMH2FG3ZA3Q · pith_short_8: VHQR3SMH

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/VHQR3SMH2FG3ZA3QL7E6EZ5QA3 \
  | 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: a9e11dc987d14dbc83705fc9e267b006cb99444bbbf7c313662031aeda9fa9dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9606fa4be399b39e018eab5ed81ef33c0de81ceb437fbb42a8b3364de4914216",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-05T03:06:44Z",
    "title_canon_sha256": "590f8faa667d8ae89c5eb9bd52fe059b89ebb71d7971681b3f2622ce76a4abd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1054",
    "kind": "arxiv",
    "version": 1
  }
}