Pith Number

pith:2BBDF4LW

pith:2012:2BBDF4LW4NO22LLFVRJJXNE3TB

not attested not anchored not stored refs pending

The orbital and superhump periods of the deeply eclipsing dwarf nova PU UMa

Colin Littlefield, Etienne Morelle, Franz-Josef Hambsch, Ian Miller, Jeremy Shears, Jochen Pietz, Richard Sabo, Roger Pickard

arxiv:1209.4062 v1 · 2012-09-18 · 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{2BBDF4LW4NO22LLFVRJJXNE3TB}

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	2026-05-18T03:45:21.875284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d04232f176e35dad2d65ac529bb49b984a15eea9ec849caa8249247bc27a5485

Aliases

arxiv: 1209.4062 · arxiv_version: 1209.4062v1 · doi: 10.48550/arxiv.1209.4062 · pith_short_12: 2BBDF4LW4NO2 · pith_short_16: 2BBDF4LW4NO22LLF · pith_short_8: 2BBDF4LW

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/2BBDF4LW4NO22LLFVRJJXNE3TB \
  | 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: d04232f176e35dad2d65ac529bb49b984a15eea9ec849caa8249247bc27a5485

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed41453f80c36b6205bcdad4f0f6653a8c4892876e97154a606ef7cf7fd99563",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-18T19:03:56Z",
    "title_canon_sha256": "6483e07bd290608614951dad2b987a107b39b35ff616bc0d131c3e115005096d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4062",
    "kind": "arxiv",
    "version": 1
  }
}