Pith Number

pith:GTPGRRYH

pith:2012:GTPGRRYHV7CDSGF7YFUVOKWLOW

not attested not anchored not stored refs pending

Digitized archive of the Kodaikanal images: Representative results of solar cycle variation from sunspot area determination

A. A. Nazia, B. Ravindra, D. Banerjee, K. Amareswari, M. Priyal, T. G. Priya

arxiv:1212.4776 v1 · 2012-12-19 · 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{GTPGRRYHV7CDSGF7YFUVOKWLOW}

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	2026-05-18T01:52:30.334924Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34de68c707afc43918bfc169572acb758b2e61a8ec0e58298a37a6156a7974b1

Aliases

arxiv: 1212.4776 · arxiv_version: 1212.4776v1 · doi: 10.48550/arxiv.1212.4776 · pith_short_12: GTPGRRYHV7CD · pith_short_16: GTPGRRYHV7CDSGF7 · pith_short_8: GTPGRRYH

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/GTPGRRYHV7CDSGF7YFUVOKWLOW \
  | 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: 34de68c707afc43918bfc169572acb758b2e61a8ec0e58298a37a6156a7974b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54bba283665d003d0b0dcd11ab9f2674d096b3f2f620a06537be25ad23ab8157",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-19T18:14:00Z",
    "title_canon_sha256": "5c4efd195661ba077d37ec480a05676ab1b677d7de79250030ec82078c319b81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4776",
    "kind": "arxiv",
    "version": 1
  }
}