Pith Number

pith:MPOLRNP7

pith:2005:MPOLRNP7IFVINETRQLVCBOZ3HG

not attested not anchored not stored refs pending

On the Structural Differences between Disk and Dwarf Galaxies

J. Schombert (UOregon)

arxiv:astro-ph/0509312 v1 · 2005-09-12 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MPOLRNP7IFVINETRQLVCBOZ3HG}

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	2026-07-04T16:52:53.488418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63dcb8b5ff416a86927182ea20bb3b39aef5ad65457d18acea5df64130eb2950

Aliases

arxiv: astro-ph/0509312 · arxiv_version: astro-ph/0509312v1 · doi: 10.48550/arxiv.astro-ph/0509312 · pith_short_12: MPOLRNP7IFVI · pith_short_16: MPOLRNP7IFVINETR · pith_short_8: MPOLRNP7

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/MPOLRNP7IFVINETRQLVCBOZ3HG \
  | 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: 63dcb8b5ff416a86927182ea20bb3b39aef5ad65457d18acea5df64130eb2950

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f25cc1a240b1c7e6a26f6d8af693d920bd15b19b2e128b47f44133309c23496a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-12T22:57:54Z",
    "title_canon_sha256": "fe40fc0f8b5b117664f17b669f5da1ebb66262ab9bc8ab4b5fe101bf828539d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509312",
    "kind": "arxiv",
    "version": 1
  }
}