Pith Number

pith:4GUXVVSE

pith:2013:4GUXVVSEDY3M2BHO2K6SW7ZOQJ

not attested not anchored not stored refs pending

Magnetic Cataclysmic Variables Discovered in the Palomar Transient Factory

Bruce Margon, David Levitan, Gregg Hallinan, the PTF Collaboration, Thomas A. Prince

arxiv:1304.4585 v1 · 2013-04-16 · 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{4GUXVVSEDY3M2BHO2K6SW7ZOQJ}

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	2026-05-18T01:48:06.997494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1a97ad6441e36cd04eed2bd2b7f2e825af695bbe345c486a06a135706a75762

Aliases

arxiv: 1304.4585 · arxiv_version: 1304.4585v1 · doi: 10.48550/arxiv.1304.4585 · pith_short_12: 4GUXVVSEDY3M · pith_short_16: 4GUXVVSEDY3M2BHO · pith_short_8: 4GUXVVSE

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/4GUXVVSEDY3M2BHO2K6SW7ZOQJ \
  | 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: e1a97ad6441e36cd04eed2bd2b7f2e825af695bbe345c486a06a135706a75762

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e608e747198f8713af994a095bdb2125c10c841c28a402d010da538185c7ff34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-04-16T19:59:47Z",
    "title_canon_sha256": "8472e3456d0cea9645647dc31c33dbe68d690cd3ec61b35502a1eabe51026809"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4585",
    "kind": "arxiv",
    "version": 1
  }
}