Pith Number

pith:W7WKRYOB

pith:2009:W7WKRYOBY7OSM36MUUZREMXOMA

not attested not anchored not stored refs pending

Thick-disk evolution induced by the growth of an embedded thin disk

(2) CCAPP, \'Alvaro Villalobos (1), Amina Helmi (1) ((1) Kapteyn Astronomical Institute, Ohio State University), Stelios Kazantzidis (2), University of Groningen

arxiv:0912.2250 v2 · 2009-12-11 · 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{W7WKRYOBY7OSM36MUUZREMXOMA}

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	2026-05-18T02:33:56.821935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7eca8e1c1c7dd266fcca5331232ee6028243fed02061a0b2327b7563aacdafa

Aliases

arxiv: 0912.2250 · arxiv_version: 0912.2250v2 · doi: 10.48550/arxiv.0912.2250 · pith_short_12: W7WKRYOBY7OS · pith_short_16: W7WKRYOBY7OSM36M · pith_short_8: W7WKRYOB

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/W7WKRYOBY7OSM36MUUZREMXOMA \
  | 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: b7eca8e1c1c7dd266fcca5331232ee6028243fed02061a0b2327b7563aacdafa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bbbd91f73f898be1c18e65306cc8fc28bbd67accd787681959359de51802451",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-12-11T16:22:06Z",
    "title_canon_sha256": "76f50dc38a957c7c5b59653eedb51de3088dbf225c7e6109664ca45b82a5d7ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2250",
    "kind": "arxiv",
    "version": 2
  }
}