Pith Number

pith:VN266MBO

pith:2012:VN266MBOYBWJYCC7WN7QFVW2AR

not attested not anchored not stored refs pending

The Most Metal-Poor Stars. I. Discovery, Data, and Atmospheric Parameters

Anna Frebel, David Yong, John E. Norris, M. Asplund, M. S. Bessell, N. Christlieb, P. S. Barklem, S. G. Ryan, Simon J. Murphy, Timothy C. Beers

arxiv:1208.2999 v1 · 2012-08-15 · 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{VN266MBOYBWJYCC7WN7QFVW2AR}

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	2026-05-18T01:55:15.873742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab75ef302ec06c9c085fb37f02d6da044d2d25289e75a03761b7f3a4ba6b94fb

Aliases

arxiv: 1208.2999 · arxiv_version: 1208.2999v1 · doi: 10.48550/arxiv.1208.2999 · pith_short_12: VN266MBOYBWJ · pith_short_16: VN266MBOYBWJYCC7 · pith_short_8: VN266MBO

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/VN266MBOYBWJYCC7WN7QFVW2AR \
  | 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: ab75ef302ec06c9c085fb37f02d6da044d2d25289e75a03761b7f3a4ba6b94fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bc6e41e6111a703e0513a4d18675cce19620eb97440d040544495a27dfd25f0",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-08-15T00:19:41Z",
    "title_canon_sha256": "795c89d54d359ceed15abc4a82f9f0be2f50b8b2d9bf13cd5f2bfde55455c4b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2999",
    "kind": "arxiv",
    "version": 1
  }
}