Pith Number

pith:PPUKPDDK

pith:2010:PPUKPDDKCGR4NJPOP7ZKVFGNNL

not attested not anchored not stored refs pending

Optical Studies of Twenty Longer-Period Cataclysmic Binaries

Christopher S. Peters, John R. Thorstensen, Julie N. Skinner

arxiv:1009.1265 v1 · 2010-09-07 · 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{PPUKPDDKCGR4NJPOP7ZKVFGNNL}

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	2026-05-18T02:05:35.717801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7be8a78c6a11a3c6a5ee7ff2aa94cd6afc731b56f8496c49685a02ed9b84cbd8

Aliases

arxiv: 1009.1265 · arxiv_version: 1009.1265v1 · doi: 10.48550/arxiv.1009.1265 · pith_short_12: PPUKPDDKCGR4 · pith_short_16: PPUKPDDKCGR4NJPO · pith_short_8: PPUKPDDK

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/PPUKPDDKCGR4NJPOP7ZKVFGNNL \
  | 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: 7be8a78c6a11a3c6a5ee7ff2aa94cd6afc731b56f8496c49685a02ed9b84cbd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afed00d606cd07ae0e7479d49ecdc836845fc30aa974595940b4cd6de5eb787f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-09-07T12:29:14Z",
    "title_canon_sha256": "92e8c3368a0e00c201f542d9ffb66905e96534cbbc1608f2c2d28e56156dd7b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1265",
    "kind": "arxiv",
    "version": 1
  }
}