Pith Number

pith:UXGXQFRC

pith:2009:UXGXQFRC3VM4NZL6M6M63QEVXX

not attested not anchored not stored refs pending

Morphology and evolution of umbral dots and their substructures

K. G. Puschmann, M. Sobotka

arxiv:0907.4236 v1 · 2009-07-24 · 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{UXGXQFRC3VM4NZL6M6M63QEVXX}

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	2026-05-18T03:31:07.247130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5cd781622dd59c6e57e6799edc095bdc149e7da68e5e7c3cd1c4129cb02dbc4

Aliases

arxiv: 0907.4236 · arxiv_version: 0907.4236v1 · doi: 10.48550/arxiv.0907.4236 · pith_short_12: UXGXQFRC3VM4 · pith_short_16: UXGXQFRC3VM4NZL6 · pith_short_8: UXGXQFRC

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/UXGXQFRC3VM4NZL6M6M63QEVXX \
  | 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: a5cd781622dd59c6e57e6799edc095bdc149e7da68e5e7c3cd1c4129cb02dbc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3998b072520d899df5122ade9ed3748e5d79344d11256d938ac84fa7740d8f9b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-24T09:03:50Z",
    "title_canon_sha256": "d1e551689746871bb3e4ef6ce034cbf541606f6c5ab46775f2b38f0816f32504"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4236",
    "kind": "arxiv",
    "version": 1
  }
}