Pith Number

pith:CPHM2JY2

pith:2012:CPHM2JY2Y4JAJ7BXYTPBUKAISH

not attested not anchored not stored refs pending

Long-term Variations of Solar Differential Rotation and Sunspot Activity: Revisited

H.F. Liang, J.L. Xie, K.J. Li, P.X. Gao, W. Feng, X.J. Shi

arxiv:1205.1598 v1 · 2012-05-08 · 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{CPHM2JY2Y4JAJ7BXYTPBUKAISH}

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	2026-05-18T01:57:36.829660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13cecd271ac71204fc37c4de1a280891cbf451599a4b8325bf9f5074877bdb67

Aliases

arxiv: 1205.1598 · arxiv_version: 1205.1598v1 · doi: 10.48550/arxiv.1205.1598 · pith_short_12: CPHM2JY2Y4JA · pith_short_16: CPHM2JY2Y4JAJ7BX · pith_short_8: CPHM2JY2

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/CPHM2JY2Y4JAJ7BXYTPBUKAISH \
  | 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: 13cecd271ac71204fc37c4de1a280891cbf451599a4b8325bf9f5074877bdb67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ef852f6f89ed314494238ce0c00bc8717e9efaf1bb24304d201dc5287b05bc5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-05-08T06:21:03Z",
    "title_canon_sha256": "380c0d0d7125db448024a4a40ac5cdfb53a4abb43685058f2728c4626be6b674"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.1598",
    "kind": "arxiv",
    "version": 1
  }
}