Pith Number

pith:YDPC5NX7

pith:2009:YDPC5NX7VKKT7M4SVABBVUTF2U

not attested not anchored not stored refs pending

Chemical Composition of Extremely Metal-Poor Stars in the Sextans Dwarf Spheroidal Galaxy

A. Helmi, A. Kaufer, B. Letarte, C. Babusiaux, E. Tolstoy, F. Primas, G. Battaglia, K. Sadakane, K. Venn, M. Irwin, M. Shetrone, M. Tafelmeyer, N. Arimoto, P. Francois, P. Jablonka, T. Szeifert, V. Hill, W. Aoki

arxiv:0904.4307 v1 · 2009-04-28 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YDPC5NX7VKKT7M4SVABBVUTF2U}

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	2026-05-18T02:13:56.797361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0de2eb6ffaa953fb392a8021ad265d52df74215dcf60369b13a1d173daf7fd1

Aliases

arxiv: 0904.4307 · arxiv_version: 0904.4307v1 · doi: 10.48550/arxiv.0904.4307 · pith_short_12: YDPC5NX7VKKT · pith_short_16: YDPC5NX7VKKT7M4S · pith_short_8: YDPC5NX7

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/YDPC5NX7VKKT7M4SVABBVUTF2U \
  | 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: c0de2eb6ffaa953fb392a8021ad265d52df74215dcf60369b13a1d173daf7fd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "515d60d21f808573d745d03ec1a319d1028b4c34931ae3f7cf5766fa025becde",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-28T05:21:06Z",
    "title_canon_sha256": "cbd2c0fdff0ee5ba9fa5e75701f6e1f2f3fef6cc5be4aaefde5a269ea5215a4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4307",
    "kind": "arxiv",
    "version": 1
  }
}