Pith Number

pith:LPE2AKX4

pith:2009:LPE2AKX4547APLETLCMPEO4AFX

not attested not anchored not stored refs pending

The enigmatic pair of dwarf galaxies Leo IV and Leo V: coincidence or common origin?

(2) Zentrum fuer Astronomie der Universitaet Heidelberg, 3), (3) Alexander von Humboldt research fellow), Andrea V. Maccio' (1) ((1) Max-Planck-Institut fuer Astronomie, Hans-Walter Rix (1), Jelte T. A. de Jong (1), Kester W. Smith (1), Nicolas F. Martin (1), Shoko Jin (2

arxiv:0912.3251 v2 · 2009-12-17 · 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{LPE2AKX4547APLETLCMPEO4AFX}

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	2026-05-18T02:33:56.278658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5bc9a02afcef3e07ac935898f23b802dcbf78e1aee484ffcece14eae57da78ac

Aliases

arxiv: 0912.3251 · arxiv_version: 0912.3251v2 · doi: 10.48550/arxiv.0912.3251 · pith_short_12: LPE2AKX4547A · pith_short_16: LPE2AKX4547APLET · pith_short_8: LPE2AKX4

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/LPE2AKX4547APLETLCMPEO4AFX \
  | 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: 5bc9a02afcef3e07ac935898f23b802dcbf78e1aee484ffcece14eae57da78ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83c12f9234e044cb8693988c6893c9ca4143bfeef0519a07a226e1a3cd89e2c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-17T09:15:13Z",
    "title_canon_sha256": "b1d0931de58157ef6a7ac45147b3cbbd249a6cc07c8a933858a05457e0c2fd7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3251",
    "kind": "arxiv",
    "version": 2
  }
}