Pith Number

pith:4UORQUDK

pith:2013:4UORQUDKIAA6WOGEWCRN3AUKE2

not attested not anchored not stored refs pending

A Study of the Unusual Z Cam Systems IW Andromedae and V513 Cassiopeia

Albert P. Linnell, Gabrelle Saurage, Joseph Huehnerhoff, Mark E. Everett, Meagan Albright, Mike Simonsen, Nick Hunt-Walker, Paula Szkody, Russet McMillan, Steve B. Howell

arxiv:1311.1557 v1 · 2013-11-07 · 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{4UORQUDKIAA6WOGEWCRN3AUKE2}

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	2026-05-18T01:46:38.016893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e51d18506a4001eb38c4b0a2dd828a268ce1ad5de2fea00303f7e6e7f3b1e63f

Aliases

arxiv: 1311.1557 · arxiv_version: 1311.1557v1 · doi: 10.48550/arxiv.1311.1557 · pith_short_12: 4UORQUDKIAA6 · pith_short_16: 4UORQUDKIAA6WOGE · pith_short_8: 4UORQUDK

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/4UORQUDKIAA6WOGEWCRN3AUKE2 \
  | 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: e51d18506a4001eb38c4b0a2dd828a268ce1ad5de2fea00303f7e6e7f3b1e63f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "484e9a1e9e41e1df5cfc12ff94a9dae0a44dffcaaa504ba5cf5732b45380b3e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-07T01:14:30Z",
    "title_canon_sha256": "2a766f8c7e96d058c260ea7bd08ab53c62cabce00720ea7d1cdb2366c2a3493d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1557",
    "kind": "arxiv",
    "version": 1
  }
}