Pith Number

pith:7BUDKNK3

pith:2012:7BUDKNK3PIKITBLFL7HWUY3CZ4

not attested not anchored not stored refs pending

The hypothesis of the dust origin of the Broad Line Region in Active Galactic Nuclei

B. Czerny, K. Hryniewicz

arxiv:1202.2151 v2 · 2012-02-09 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BUDKNK3PIKITBLFL7HWUY3CZ4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:58:31.479964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f86835355b7a148985655fcf6a6362cf15abd65da9ca399e26692fc923c26e72

Aliases

arxiv: 1202.2151 · arxiv_version: 1202.2151v2 · doi: 10.48550/arxiv.1202.2151 · pith_short_12: 7BUDKNK3PIKI · pith_short_16: 7BUDKNK3PIKITBLF · pith_short_8: 7BUDKNK3

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/7BUDKNK3PIKITBLFL7HWUY3CZ4 \
  | 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: f86835355b7a148985655fcf6a6362cf15abd65da9ca399e26692fc923c26e72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7416dc7e689e03f8b3d42b45c825b75053c6c686888e2c79e55c61666a4bc6fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-02-09T23:43:30Z",
    "title_canon_sha256": "1c475eacdc30ea1ccec25c3712322dac721fdb7f0803d7bcbe0eb54ebd002c78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2151",
    "kind": "arxiv",
    "version": 2
  }
}