Pith Number

pith:OSP76JJV

pith:2010:OSP76JJV3MU4GIQJE72BZV37ZM

not attested not anchored not stored refs pending

A geometrical height scale for sunspot penumbrae

B. Ruiz Cobo, K. G. Puschmann, V. Mart\'inez Pillet

arxiv:1007.2779 v1 · 2010-07-16 · 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{OSP76JJV3MU4GIQJE72BZV37ZM}

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	2026-05-18T03:31:07.176820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

749fff2535db29c3220927f41cd77fcb1a2e3aa7dbf0fa022d1fa9405d790ccf

Aliases

arxiv: 1007.2779 · arxiv_version: 1007.2779v1 · doi: 10.48550/arxiv.1007.2779 · pith_short_12: OSP76JJV3MU4 · pith_short_16: OSP76JJV3MU4GIQJ · pith_short_8: OSP76JJV

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/OSP76JJV3MU4GIQJE72BZV37ZM \
  | 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: 749fff2535db29c3220927f41cd77fcb1a2e3aa7dbf0fa022d1fa9405d790ccf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7890102db133c023ac5c322be1d56c6a5ef3a16e7c613a477e20baf94592bc4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-07-16T14:06:00Z",
    "title_canon_sha256": "ae974db9e383cf39b2355502186981ffecb3232db351d4e6951b04e9cd9a6bbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.2779",
    "kind": "arxiv",
    "version": 1
  }
}