Pith Number

pith:ZB2CZUII

pith:2011:ZB2CZUIIPMIS6EV6BMVRW6W2NQ

not attested not anchored not stored refs pending

The photometric period in ES Ceti

B. Warner, C.M. Copperwheat, D. Steeghs, E. Armstrong, J. Kemp, J. Patterson, P.A. Woudt, R. Rea, S.P. Littlefair, T.R. Marsh, V.S. Dhillon

arxiv:1101.3437 v2 · 2011-01-18 · 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{ZB2CZUIIPMIS6EV6BMVRW6W2NQ}

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	2026-05-18T02:03:26.857306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8742cd1087b112f12be0b2b1b7ada6c3d750cc4b5df15826df2e7559baa7991

Aliases

arxiv: 1101.3437 · arxiv_version: 1101.3437v2 · doi: 10.48550/arxiv.1101.3437 · pith_short_12: ZB2CZUIIPMIS · pith_short_16: ZB2CZUIIPMIS6EV6 · pith_short_8: ZB2CZUII

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/ZB2CZUIIPMIS6EV6BMVRW6W2NQ \
  | 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: c8742cd1087b112f12be0b2b1b7ada6c3d750cc4b5df15826df2e7559baa7991

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0950eb08adda9d8b64ca2a11606413334e7d33fd09eac1e9f70f0da533a4926",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-01-18T12:24:30Z",
    "title_canon_sha256": "018875226b674a8e8a971a4cec3c4c6b9055033b74959b1f883ab692c783522e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3437",
    "kind": "arxiv",
    "version": 2
  }
}