Pith Number

pith:CD2XSF7Q

pith:2018:CD2XSF7QBRN3DWQOTI27NOYWQL

not attested not anchored not stored refs pending

NLTE spectroscopic analysis of the $^3$He anomaly in subluminous B-type stars

A. Irrgang, D. Schneider, M. F. Nieva, N. Przybilla, U. Heber

arxiv:1804.03234 v3 · 2018-04-09 · 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{CD2XSF7QBRN3DWQOTI27NOYWQL}

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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	2026-05-18T00:02:22.353421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10f57917f00c5bb1da0e9a35f6bb1682f701ca34f3c0f1614e66c152baa63dcb

Aliases

arxiv: 1804.03234 · arxiv_version: 1804.03234v3 · doi: 10.48550/arxiv.1804.03234 · pith_short_12: CD2XSF7QBRN3 · pith_short_16: CD2XSF7QBRN3DWQO · pith_short_8: CD2XSF7Q

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/CD2XSF7QBRN3DWQOTI27NOYWQL \
  | 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: 10f57917f00c5bb1da0e9a35f6bb1682f701ca34f3c0f1614e66c152baa63dcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f4729aaf751f27ccdd38e8ed6d4b95129cd8a9ac2b710a45e1c47c2c2df9305",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-09T20:54:47Z",
    "title_canon_sha256": "5ad4c873ce528181c93112e29320010971e379387a35b7ad87019d665301e394"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03234",
    "kind": "arxiv",
    "version": 3
  }
}