Pith Number

pith:ULE46QPW

pith:2019:ULE46QPWDLH37K2D62GVIV3VAK

not attested not anchored not stored refs pending

The variation of the magnetic field of the Ap star HD~50169 over its 29 year rotation period

D. O. Kudryavtsev, E. A. Semenko, G. Mathys, I. A. Yakunin, I. I. Romanyuk, J. D. Landstreet, M. Sch\"oller, S. Hubrig

arxiv:1902.05869 v1 · 2019-02-15 · 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{ULE46QPWDLH37K2D62GVIV3VAK}

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	2026-05-17T23:49:39.009673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2c9cf41f61acfbfab43f68d54577502965378bb1442003f73b216ba2da47516

Aliases

arxiv: 1902.05869 · arxiv_version: 1902.05869v1 · doi: 10.48550/arxiv.1902.05869 · pith_short_12: ULE46QPWDLH3 · pith_short_16: ULE46QPWDLH37K2D · pith_short_8: ULE46QPW

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/ULE46QPWDLH37K2D62GVIV3VAK \
  | 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: a2c9cf41f61acfbfab43f68d54577502965378bb1442003f73b216ba2da47516

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d89faf5ea69a224f0572ac55c79999ad961e569c76ef6323a1b49e845dd6b9c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-15T16:13:19Z",
    "title_canon_sha256": "cb57666840184909f1b365d83fb146b91261bb5893ad817ef05ddd2b49993e4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05869",
    "kind": "arxiv",
    "version": 1
  }
}