Pith Number

pith:CGTWCTTR

pith:2011:CGTWCTTR5KS5EK67Q4ITXJTOMW

not attested not anchored not stored refs pending

On the Formation of Penumbrae as Observed with the German VTT, SOHO/MDI, and SDO/HMI

Nazaret Bello Gonzalez, Reza Rezaei, Rolf Schlichenmaier

arxiv:1102.0965 v1 · 2011-02-04 · 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{CGTWCTTR5KS5EK67Q4ITXJTOMW}

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	2026-05-18T04:30:03.307832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870

Aliases

arxiv: 1102.0965 · arxiv_version: 1102.0965v1 · doi: 10.48550/arxiv.1102.0965 · pith_short_12: CGTWCTTR5KS5 · pith_short_16: CGTWCTTR5KS5EK67 · pith_short_8: CGTWCTTR

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/CGTWCTTR5KS5EK67Q4ITXJTOMW \
  | 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: 11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c797098cb6eaaeb7b2963355aef22fe65f5163de05cecd9f840928ceda5b9e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-02-04T16:40:19Z",
    "title_canon_sha256": "05a270f8ff2275130cfd4b74915166b35888f1a6a406e646652bca7ad3f50f20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0965",
    "kind": "arxiv",
    "version": 1
  }
}