Pith Number

pith:R3JRA2DS

pith:2010:R3JRA2DSONQ74NM7DGYFA5IBNY

not attested not anchored not stored refs pending

Implications of Dramatic Broad Absorption Line Variability in the Quasar FBQS J1408+3054

D. P. Schneider (Penn State), IGPP/LLNL), Konstantin Anosov (York U.), M. D. Gregg (UC Davis, Patrick B. Hall, R. H. Becker (UC Davis, R. L. White (STScI), R. R. Gibson (U. Washington), W. N. Brandt (Penn State)

arxiv:1010.3728 v2 · 2010-10-18 · 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{R3JRA2DSONQ74NM7DGYFA5IBNY}

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	2026-05-18T02:05:01.492854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ed31068727361fe359f19b05075016e117fdaa2b7808befcc1d99f6efd47bb2

Aliases

arxiv: 1010.3728 · arxiv_version: 1010.3728v2 · doi: 10.48550/arxiv.1010.3728 · pith_short_12: R3JRA2DSONQ7 · pith_short_16: R3JRA2DSONQ74NM7 · pith_short_8: R3JRA2DS

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/R3JRA2DSONQ74NM7DGYFA5IBNY \
  | 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: 8ed31068727361fe359f19b05075016e117fdaa2b7808befcc1d99f6efd47bb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eae1a1225332705659ef424f66bad6eb737708694839fc0009100b1db700f8d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-10-18T20:47:09Z",
    "title_canon_sha256": "b42f5c18da36e52704a3d12f9778adec4cad66e676b6b36d5816049b47e8673e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3728",
    "kind": "arxiv",
    "version": 2
  }
}