Pith Number

pith:GNRFALKU

pith:2009:GNRFALKUMGIDP3Y3DKQMN7KDVO

not attested not anchored not stored refs pending

M31* and its circumnuclear environment

Bart P. Wakker, Q. Daniel Wang, Zhiyuan Li

arxiv:0902.3847 v1 · 2009-02-23 · 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{GNRFALKUMGIDP3Y3DKQMN7KDVO}

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	2026-05-18T02:14:46.396677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3362502d54619037ef1b1aa0c6fd43ab86da4f0894a87b80010450165bc656d4

Aliases

arxiv: 0902.3847 · arxiv_version: 0902.3847v1 · doi: 10.48550/arxiv.0902.3847 · pith_short_12: GNRFALKUMGID · pith_short_16: GNRFALKUMGIDP3Y3 · pith_short_8: GNRFALKU

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/GNRFALKUMGIDP3Y3DKQMN7KDVO \
  | 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: 3362502d54619037ef1b1aa0c6fd43ab86da4f0894a87b80010450165bc656d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4efd455125e274d1fc6d735cd286bad705cd751f2202f177592584eaab224498",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-23T04:52:34Z",
    "title_canon_sha256": "ff9217fe66c2b4d6eb27a439a276252db1cace3793c8f77bf4f1dbf7cd961244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3847",
    "kind": "arxiv",
    "version": 1
  }
}