Pith Number

pith:NFDLJWAS

pith:2014:NFDLJWASC7JIVT5WMUSS5B7TW7

not attested not anchored not stored refs pending

Obscuration by Gas and Dust in Luminous Quasars

Mark Brodwin, Ryan C. Hickox, Shawn M. Usman, Stephen S. Murray

arxiv:1406.6099 v1 · 2014-06-23 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFDLJWASC7JIVT5WMUSS5B7TW7}

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	2026-05-18T02:49:04.074890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6946b4d81217d28acfb665252e87f3b7f590804251c7c0d6678808ed24fda5ab

Aliases

arxiv: 1406.6099 · arxiv_version: 1406.6099v1 · doi: 10.48550/arxiv.1406.6099 · pith_short_12: NFDLJWASC7JI · pith_short_16: NFDLJWASC7JIVT5W · pith_short_8: NFDLJWAS

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/NFDLJWASC7JIVT5WMUSS5B7TW7 \
  | 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: 6946b4d81217d28acfb665252e87f3b7f590804251c7c0d6678808ed24fda5ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a12a30c9d961eb26bbe47f1591ae227783017d52e41a3c58393d906dd5f36d0",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-06-23T21:51:56Z",
    "title_canon_sha256": "b6d0f16d69b91acbe6db6ecea128bfaddf2c70d956063d98df5974b566914810"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.6099",
    "kind": "arxiv",
    "version": 1
  }
}