Pith Number

pith:BUIYMIRQ

pith:2019:BUIYMIRQPM2HBJV7QLE74KR5U3

not attested not anchored not stored refs pending

Improvement of Simplified Models of Variability of Stars: A review

Ivan L. Andronov

arxiv:1902.00963 v1 · 2019-02-03 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BUIYMIRQPM2HBJV7QLE74KR5U3}

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	2026-05-17T23:54:51.731904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d118622307b3470a6bf82c9fe2a3da6decd0b7a4c84c270f6f1ece58c5d62ba

Aliases

arxiv: 1902.00963 · arxiv_version: 1902.00963v1 · doi: 10.48550/arxiv.1902.00963 · pith_short_12: BUIYMIRQPM2H · pith_short_16: BUIYMIRQPM2HBJV7 · pith_short_8: BUIYMIRQ

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/BUIYMIRQPM2HBJV7QLE74KR5U3 \
  | 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: 0d118622307b3470a6bf82c9fe2a3da6decd0b7a4c84c270f6f1ece58c5d62ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "215533148853c2ce3ca3b3928af8f0ea84b2dcd1256bae443c8f79d955844640",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-03T20:16:11Z",
    "title_canon_sha256": "90dfb844a12bc57c063c9bcf0c1ae166c72a589ddeda07a12ae8da9cb1f10e81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00963",
    "kind": "arxiv",
    "version": 1
  }
}