Pith Number

pith:W3IKGKQZ

pith:2012:W3IKGKQZECMLONQX2NU3HSJKJP

not attested not anchored not stored refs pending

A photometric and spectroscopic study of WW And - an Algol-type, long period binary system with an accretion disc

Dorota Koziel-Wierzbowska, Maciej Winiarski, Maria Kurpinska-Winiarska, Michal Drahus, Michal Siwak, Stanislaw Zola, Tomasz Szymanski, Waclaw Waniak

arxiv:1203.2582 v1 · 2012-03-12 · 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{W3IKGKQZECMLONQX2NU3HSJKJP}

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	2026-05-18T04:00:16.413042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6d0a32a192098b73617d369b3c92a4bc0deec65e3b70d08d246a4d40b22cdcc

Aliases

arxiv: 1203.2582 · arxiv_version: 1203.2582v1 · doi: 10.48550/arxiv.1203.2582 · pith_short_12: W3IKGKQZECML · pith_short_16: W3IKGKQZECMLONQX · pith_short_8: W3IKGKQZ

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/W3IKGKQZECMLONQX2NU3HSJKJP \
  | 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: b6d0a32a192098b73617d369b3c92a4bc0deec65e3b70d08d246a4d40b22cdcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89a0e1eedf09e71f7fce444ff512261267f911af82f502b09f4021e9f10cd014",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-03-12T18:36:55Z",
    "title_canon_sha256": "ee3d80e23b0d5a7f3ac45a39706d804e399d7e138fa171188b3fd5f2837326ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2582",
    "kind": "arxiv",
    "version": 1
  }
}