Pith Number

pith:OQAG4SG2

pith:2009:OQAG4SG2MNBZ6ILWWRF6URI2V6

not attested not anchored not stored refs pending

Variability and spectral energy distributions of low-luminosity active galactic nuclei: a simultaneous X-ray/UV look with Swift

2, (2) SNS, 3), (3) ESO, (4) INAF-IFC, (5) Tel-Aviv Univ., (6) Penn State), Antonino Cucchiara (6), Claudio Pagani (6), Dan Maoz (5), Elena Pian (1, Israel, Italy, Palermo, Patrizia Romano (4), Pisa, Valentina La Parola (4) ((1) INAF-OATrieste

arxiv:0909.1906 v1 · 2009-09-10 · 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{OQAG4SG2MNBZ6ILWWRF6URI2V6}

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	2026-05-18T02:11:57.603162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74006e48da63439f2176b44bea451aaf8031f5c408bee5a7ad6e76dd9a378748

Aliases

arxiv: 0909.1906 · arxiv_version: 0909.1906v1 · doi: 10.48550/arxiv.0909.1906 · pith_short_12: OQAG4SG2MNBZ · pith_short_16: OQAG4SG2MNBZ6ILW · pith_short_8: OQAG4SG2

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/OQAG4SG2MNBZ6ILWWRF6URI2V6 \
  | 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: 74006e48da63439f2176b44bea451aaf8031f5c408bee5a7ad6e76dd9a378748

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "670a7fa14684664da9cee6452c158fa072a531d4e445024fe9aa442952999caa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-09-10T09:28:38Z",
    "title_canon_sha256": "93d79ab2fbdf65a6a5196bfd6fb2e2a50060313ae025b2ce78422c7249105e40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1906",
    "kind": "arxiv",
    "version": 1
  }
}