Pith Number

pith:ZGSUDLWO

pith:2020:ZGSUDLWOUTCV7RMO52NQDQPSL7

not attested not anchored not stored refs pending

Restoring process of sunspot penumbra

F. Zuccarello, M. Falco, M. Murabito, P. Romano, S. L. Guglielmino

arxiv:2006.09746 v1 · 2020-06-17 · 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{ZGSUDLWOUTCV7RMO52NQDQPSL7}

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	2026-07-05T01:30:06.408053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9a541aecea4c55fc58eee9b01c1f25fd8b6cf9a62fdf8bd27812732d8dc0061

Aliases

arxiv: 2006.09746 · arxiv_version: 2006.09746v1 · doi: 10.48550/arxiv.2006.09746 · pith_short_12: ZGSUDLWOUTCV · pith_short_16: ZGSUDLWOUTCV7RMO · pith_short_8: ZGSUDLWO

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/ZGSUDLWOUTCV7RMO52NQDQPSL7 \
  | 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: c9a541aecea4c55fc58eee9b01c1f25fd8b6cf9a62fdf8bd27812732d8dc0061

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f40246d6ad3c26d21f3cb3cadf954809f7100f5d4c096bef173130f389de708c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-06-17T09:39:34Z",
    "title_canon_sha256": "5703bdf240bd002dceaf9076ce6caa6c0df590cc81b950d1ecf254cdcf91db13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.09746",
    "kind": "arxiv",
    "version": 1
  }
}