Pith Number

pith:2PUDNM7V

pith:2008:2PUDNM7VGRA7Y36L4MYIHVF2V5

not attested not anchored not stored refs pending

A critical review of the evidence for M32 being a compact dwarf satellite of M31 rather than a more distant normal galaxy

A. L. Luo, C. K. S. Young, M. J. Currie, R. J. Dickens, T. J. Zhang

arxiv:0809.1327 v1 · 2008-09-08 · 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{2PUDNM7VGRA7Y36L4MYIHVF2V5}

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	2026-05-18T02:35:14.938538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3e836b3f53441fc6fcbe33083d4baaf6f0416740eff98a3843273305fc12a20

Aliases

arxiv: 0809.1327 · arxiv_version: 0809.1327v1 · doi: 10.48550/arxiv.0809.1327 · pith_short_12: 2PUDNM7VGRA7 · pith_short_16: 2PUDNM7VGRA7Y36L · pith_short_8: 2PUDNM7V

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/2PUDNM7VGRA7Y36L4MYIHVF2V5 \
  | 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: d3e836b3f53441fc6fcbe33083d4baaf6f0416740eff98a3843273305fc12a20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5baacccf93f029b47efcba0b62ae7b232fc1c408d27729b862cb4209274573f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-08T14:24:57Z",
    "title_canon_sha256": "6d99eb3bb40ee03243c8b9767cc0df431140adb37118f08d7d7ba9dfe711559e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1327",
    "kind": "arxiv",
    "version": 1
  }
}