Pith Number

pith:TCTJTEU4

pith:2012:TCTJTEU4UNUHT6SU532CHJAQH6

not attested not anchored not stored refs pending

Precursor of Sunspot Penumbral Formation discovered with Hinode SOT Observations

Kiyoshi Ichimoto, Toshifumi Shimizu, Yoshinori Suematsu

arxiv:1202.1025 v1 · 2012-02-06 · 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{TCTJTEU4UNUHT6SU532CHJAQH6}

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	2026-05-18T01:58:33.704134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98a699929ca36879fa54eef423a4103faad4d367891244e9a7b828ea8ca85efb

Aliases

arxiv: 1202.1025 · arxiv_version: 1202.1025v1 · doi: 10.48550/arxiv.1202.1025 · pith_short_12: TCTJTEU4UNUH · pith_short_16: TCTJTEU4UNUHT6SU · pith_short_8: TCTJTEU4

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/TCTJTEU4UNUHT6SU532CHJAQH6 \
  | 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: 98a699929ca36879fa54eef423a4103faad4d367891244e9a7b828ea8ca85efb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28068dc278020be9f109c301268210eec687ad99e73bdddc710df6b6c62c7cf0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-06T01:25:06Z",
    "title_canon_sha256": "bcabbacdc0c7892d23db1384d1d855a7e7b01751c6221b2b989158964c82876f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1025",
    "kind": "arxiv",
    "version": 1
  }
}