Pith Number

pith:P54YAY7H

pith:2013:P54YAY7H7DABJAEFCMKJBUJ46Z

not attested not anchored not stored refs pending

Timing variations in the secondary eclipse of NN Ser

C. Caceres, C. M. Copperwheat, E. Breedt, M. C. P. Bours, M. R. Schreiber, S. G. Parsons, S. P. Littlefair, T. R. Marsh, V. S. Dhillon

arxiv:1311.5236 v1 · 2013-11-20 · 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{P54YAY7H7DABJAEFCMKJBUJ46Z}

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	2026-05-18T01:46:11.897538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f798063e7f8c0148085131490d13cf674d5d3f403856720cd608f44ae59338b

Aliases

arxiv: 1311.5236 · arxiv_version: 1311.5236v1 · doi: 10.48550/arxiv.1311.5236 · pith_short_12: P54YAY7H7DAB · pith_short_16: P54YAY7H7DABJAEF · pith_short_8: P54YAY7H

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/P54YAY7H7DABJAEFCMKJBUJ46Z \
  | 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: 7f798063e7f8c0148085131490d13cf674d5d3f403856720cd608f44ae59338b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43ca12be618c4bda450a477d83b4ae61ce2d927ac91f2b7c817d7e666aa1d6c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-20T21:03:20Z",
    "title_canon_sha256": "80ced48ff6b76562a710858eb7273edd0ed2af684d46ecb2757a3dcf8a8c10d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5236",
    "kind": "arxiv",
    "version": 1
  }
}