Pith Number

pith:646DJKKB

pith:2009:646DJKKBMXRFQPEFWALBIFK6RN

not attested not anchored not stored refs pending

A Deeper Look at Leo IV: Star Formation History and Extended Structure

A. Seth, B. Willman, D.J. Sand, D. Zaritsky, E.W. Olszewski, N. Kallivayalil

arxiv:0911.5352 v2 · 2009-11-27 · 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{646DJKKBMXRFQPEFWALBIFK6RN}

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	2026-05-18T02:24:46.082371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f73c34a94165e2583c85b01614155e8b6efb67f74febc754cb7fa88d3023faf0

Aliases

arxiv: 0911.5352 · arxiv_version: 0911.5352v2 · doi: 10.48550/arxiv.0911.5352 · pith_short_12: 646DJKKBMXRF · pith_short_16: 646DJKKBMXRFQPEF · pith_short_8: 646DJKKB

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/646DJKKBMXRFQPEFWALBIFK6RN \
  | 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: f73c34a94165e2583c85b01614155e8b6efb67f74febc754cb7fa88d3023faf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "274d9744c9915227a9b18aee837d5a995d25ab05556beefbe82d0be8e0141b83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-27T21:13:26Z",
    "title_canon_sha256": "aac1f9346089bfda522f6dc41dcbd844a578e6582c88cfe38e1a663e17936345"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5352",
    "kind": "arxiv",
    "version": 2
  }
}