Pith Number

pith:OQXZLBLM

pith:2013:OQXZLBLMQOVKNOXMX4ZBKWBJ25

not attested not anchored not stored refs pending

Discovery of secular variations in the atmospheric abundances of magnetic Ap stars

J. D. Bailey, J. D. Landstreet, S. Bagnulo

arxiv:1312.0511 v1 · 2013-12-02 · 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{OQXZLBLMQOVKNOXMX4ZBKWBJ25}

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	2026-05-18T01:45:59.802252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

742f95856c83aaa6baecbf32155829d7496b6d75a5d3dc79f78ca7a4f2ade135

Aliases

arxiv: 1312.0511 · arxiv_version: 1312.0511v1 · doi: 10.48550/arxiv.1312.0511 · pith_short_12: OQXZLBLMQOVK · pith_short_16: OQXZLBLMQOVKNOXM · pith_short_8: OQXZLBLM

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/OQXZLBLMQOVKNOXMX4ZBKWBJ25 \
  | 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: 742f95856c83aaa6baecbf32155829d7496b6d75a5d3dc79f78ca7a4f2ade135

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55021861667199f83820b7d5d4e0d9c7dad8bb070999c5467f4eb638d224c967",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-12-02T16:45:46Z",
    "title_canon_sha256": "7bab202635605c8cfe8eb2a6b8fe75b92a297e0e2d0d48a3af55624a10dfa929"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.0511",
    "kind": "arxiv",
    "version": 1
  }
}