Pith Number

pith:U7SWLCPD

pith:2010:U7SWLCPDIK2EKJGVGCJRZKJL4Z

not attested not anchored not stored refs pending

The first spectroscopic verification of an extragalactic classical chemically peculiar star

(2) University of Michigan-Dearborn, 3) ((1) Institute for Astronomy, (3) University of Michigan), D. J. Bord (2, E. Paunzen (1), M. Netopil (1), Vienna University

arxiv:1011.6162 v1 · 2010-11-29 · astro-ph.SR · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7SWLCPDIK2EKJGVGCJRZKJL4Z}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:04:38.069782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7e56589e342b44524d530931ca92be66c118a48fba0501c3ab2adeaf11807a2

Aliases

arxiv: 1011.6162 · arxiv_version: 1011.6162v1 · doi: 10.48550/arxiv.1011.6162 · pith_short_12: U7SWLCPDIK2E · pith_short_16: U7SWLCPDIK2EKJGV · pith_short_8: U7SWLCPD

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/U7SWLCPDIK2EKJGVGCJRZKJL4Z \
  | 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: a7e56589e342b44524d530931ca92be66c118a48fba0501c3ab2adeaf11807a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93b97efb053dabe285d48b9424814b06cbcf201170fd1f79ceb3fa2a8c8cccca",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-11-29T09:28:05Z",
    "title_canon_sha256": "c38f180ac8bd4597575e3e213b656722572e98f9ac954882adf603879b0fbe79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.6162",
    "kind": "arxiv",
    "version": 1
  }
}