Pith Number

pith:PNDO6BPS

pith:2013:PNDO6BPSMX7M2HZSF4EW7Q3QIN

not attested not anchored not stored refs pending

Discovery of the spectroscopic binary nature of three bright southern Cepheids

A. Derekas, J. L. Christiansen, L. L. Kiss, L. Szabados, P. Sz\'ekely, R. I. Anderson, T. Szalai

arxiv:1308.1855 v1 · 2013-08-08 · 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{PNDO6BPSMX7M2HZSF4EW7Q3QIN}

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	2026-05-18T03:16:27.544946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b46ef05f265fecd1f322f096fc3704351e975fd1db180ce7d2bc792e7438696

Aliases

arxiv: 1308.1855 · arxiv_version: 1308.1855v1 · doi: 10.48550/arxiv.1308.1855 · pith_short_12: PNDO6BPSMX7M · pith_short_16: PNDO6BPSMX7M2HZS · pith_short_8: PNDO6BPS

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/PNDO6BPSMX7M2HZSF4EW7Q3QIN \
  | 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: 7b46ef05f265fecd1f322f096fc3704351e975fd1db180ce7d2bc792e7438696

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c2544d79c478f1291823ad96798bf9a753d149cfe47ce3915773913ef802f76",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-08-08T13:58:10Z",
    "title_canon_sha256": "abc3da336d03cf69f643185133b3fefa79c87d23babf0dc9b8c8ae383b5d83cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1855",
    "kind": "arxiv",
    "version": 1
  }
}