Pith Number

pith:2TOOKZOJ

pith:2009:2TOOKZOJNBSTAP25BN6NZU7RZF

not attested not anchored not stored refs pending

The Dynamical and Chemical Evolution of Dwarf Spheroidal Galaxies

A. Helmi, B. Letarte, E. Tolstoy, G. Battaglia, K.A. Venn, M. D. Shetrone, M. Irwin, P. Jablonka, T. Sawala, V. Hill, Y. Revaz

arxiv:0904.4636 v1 · 2009-04-29 · 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{2TOOKZOJNBSTAP25BN6NZU7RZF}

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	2026-05-18T02:13:49.136821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4dce565c96865303f5d0b7cdcd3f1c95fde7189bbe19e7cad4005f6ec7f92f3

Aliases

arxiv: 0904.4636 · arxiv_version: 0904.4636v1 · doi: 10.48550/arxiv.0904.4636 · pith_short_12: 2TOOKZOJNBST · pith_short_16: 2TOOKZOJNBSTAP25 · pith_short_8: 2TOOKZOJ

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/2TOOKZOJNBSTAP25BN6NZU7RZF \
  | 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: d4dce565c96865303f5d0b7cdcd3f1c95fde7189bbe19e7cad4005f6ec7f92f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "984246e7e6758aa4565052560a90d7bad7c347ea972820f46e5bd5253bb8054b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-29T15:10:18Z",
    "title_canon_sha256": "39a42d8cadbb50ca063ad44e8f47a32898da0184516421d353bdd64ee8394761"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4636",
    "kind": "arxiv",
    "version": 1
  }
}