Pith Number

pith:ADB5MCEQ

pith:2011:ADB5MCEQXANVRB7GISC2B2JAAG

not attested not anchored not stored refs pending

The environment of weak emission-line quasars

2), Marek Nikolajuk (1, Poland), Roland Walter (1) ((1) ISDC - University of Geneva, Switzerland (2) University of Bialystok

arxiv:1111.3909 v2 · 2011-11-16 · astro-ph.CO · 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{ADB5MCEQXANVRB7GISC2B2JAAG}

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	2026-05-18T04:06:09.273799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00c3d60890b81b5887e64485a0e92001970e7c4c6e0311bd89082d4db601fca1

Aliases

arxiv: 1111.3909 · arxiv_version: 1111.3909v2 · doi: 10.48550/arxiv.1111.3909 · pith_short_12: ADB5MCEQXANV · pith_short_16: ADB5MCEQXANVRB7G · pith_short_8: ADB5MCEQ

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/ADB5MCEQXANVRB7GISC2B2JAAG \
  | 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: 00c3d60890b81b5887e64485a0e92001970e7c4c6e0311bd89082d4db601fca1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "733cdf3e783835740876de97b2956af27457f08913785b533f397129ee75a546",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-16T19:15:32Z",
    "title_canon_sha256": "a4c7f3d3625367b31ef7d4d03eecaa59640488f8a74e9f4c097d74885f8c5f96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3909",
    "kind": "arxiv",
    "version": 2
  }
}