Pith Number

pith:O3YA7TEG

pith:2009:O3YA7TEGFHUCZUY5K3IHUOUEL3

not attested not anchored not stored refs pending

Kinematic analysis of nuclear spirals: feeding the black hole in NGC1097

2), (2) IAS, (3) Stockholm Observatory, 4) ((1) MPIA, (4) Oskar Klein Centre, Glenn van de Ven (1, Heidelberg, Kambiz Fathi (3, Princeton, Stockholm)

arxiv:0905.3556 v2 · 2009-05-21 · astro-ph.GA · 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{O3YA7TEGFHUCZUY5K3IHUOUEL3}

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	2026-05-18T04:32:35.329358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76f00fcc8629e82cd31d56d07a3a845ee7451045c1f92a0fd9f802c462435199

Aliases

arxiv: 0905.3556 · arxiv_version: 0905.3556v2 · doi: 10.48550/arxiv.0905.3556 · pith_short_12: O3YA7TEGFHUC · pith_short_16: O3YA7TEGFHUCZUY5 · pith_short_8: O3YA7TEG

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/O3YA7TEGFHUCZUY5K3IHUOUEL3 \
  | 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: 76f00fcc8629e82cd31d56d07a3a845ee7451045c1f92a0fd9f802c462435199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d8394dd9983f4811d70886c960814443a83cb934362854b9907ab21ce40d234",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-05-21T20:57:42Z",
    "title_canon_sha256": "16a8620ed4e2ea29245bd800a94856ec7241dbb6d35e2eac082d5315969e919c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3556",
    "kind": "arxiv",
    "version": 2
  }
}