Pith Number

pith:ST4B7A62

pith:2012:ST4B7A62K4DYC5L3Y6RSCUDFIK

not attested not anchored not stored refs pending

Twin Telescope observations of the Sun at Kodaikanal Observatory

B. Ravindra, Jagdev Singh

arxiv:1202.5910 v1 · 2012-02-27 · 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{ST4B7A62K4DYC5L3Y6RSCUDFIK}

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	2026-05-18T04:01:24.345703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94f81f83da570781757bc7a32150654280778ecf067eddd3d2fcad102c750197

Aliases

arxiv: 1202.5910 · arxiv_version: 1202.5910v1 · doi: 10.48550/arxiv.1202.5910 · pith_short_12: ST4B7A62K4DY · pith_short_16: ST4B7A62K4DYC5L3 · pith_short_8: ST4B7A62

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/ST4B7A62K4DYC5L3Y6RSCUDFIK \
  | 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: 94f81f83da570781757bc7a32150654280778ecf067eddd3d2fcad102c750197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1620da914a57ae35a1fddbbfe6b7d5a30e7e3c5c5b9269c3719e889e3abd92d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-27T12:30:17Z",
    "title_canon_sha256": "8ccbdbae3145c8b4cb2a24157281a7347876c4b722bfd1e7511b52fbab5cc29f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5910",
    "kind": "arxiv",
    "version": 1
  }
}