Pith Number

pith:WHPOOBG2

pith:2011:WHPOOBG2ISFDYPHO5LZIP53NZ7

not attested not anchored not stored refs pending

A VLA Survey of Radio-Selected SDSS Broad Absorption Line Quasars

Carlos De Breuck, Michael A. DiPompeo, Michael S. Brotherton, Sally Laurent-Muehleisen

arxiv:1110.4916 v2 · 2011-10-21 · 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{WHPOOBG2ISFDYPHO5LZIP53NZ7}

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	2026-05-18T02:00:07.000647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1dee704da448a3c3ceeeaf287f76dcfdb9f583409aefda5b32844289ef821df

Aliases

arxiv: 1110.4916 · arxiv_version: 1110.4916v2 · doi: 10.48550/arxiv.1110.4916 · pith_short_12: WHPOOBG2ISFD · pith_short_16: WHPOOBG2ISFDYPHO · pith_short_8: WHPOOBG2

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/WHPOOBG2ISFDYPHO5LZIP53NZ7 \
  | 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: b1dee704da448a3c3ceeeaf287f76dcfdb9f583409aefda5b32844289ef821df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfddd1ab9adf6576e538d12b0af42ee08d0d8ee28c8db3e28391cc7fdb150126",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-21T21:58:20Z",
    "title_canon_sha256": "5342b04664666cfdc8f14b2ab63216df54e1acc83a5d999908ed7d357daa976a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4916",
    "kind": "arxiv",
    "version": 2
  }
}