Pith Number

pith:ZEN3TOP3

pith:2012:ZEN3TOP33ZOYA3OWFNQEILVIS5

not attested not anchored not stored refs pending

The Most Metal-Poor Stars. IV. The Two Populations With [Fe/H] < -3.0

Anna Frebel, David Yong, Gerard Gilmore, John E. Norris, M. Asplund, M. S. Bessell, N. Christlieb, P. S. Barklem, Rosemary F.G. Wyse, S. G. Ryan, Timothy C. Beers

arxiv:1211.3157 v1 · 2012-11-13 · 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{ZEN3TOP33ZOYA3OWFNQEILVIS5}

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	2026-05-18T01:53:15.917270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c91bb9b9fbde5d806dd62b60442ea897467d205e21c041b50bd091005711f4d4

Aliases

arxiv: 1211.3157 · arxiv_version: 1211.3157v1 · doi: 10.48550/arxiv.1211.3157 · pith_short_12: ZEN3TOP33ZOY · pith_short_16: ZEN3TOP33ZOYA3OW · pith_short_8: ZEN3TOP3

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/ZEN3TOP33ZOYA3OWFNQEILVIS5 \
  | 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: c91bb9b9fbde5d806dd62b60442ea897467d205e21c041b50bd091005711f4d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5005cad9cee33988a400ff09f09e22af74184eb33e1e6c18a291f27390cdfbb0",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-11-13T23:14:12Z",
    "title_canon_sha256": "ce8f6b9ba8595862e725ee3b7e09bd334c3647b20ea333f4cbba6e42daa28edd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3157",
    "kind": "arxiv",
    "version": 1
  }
}