Pith Number

pith:NY2YYE2A

pith:2010:NY2YYE2AJCT3YRJRF4QJGIMYC7

not attested not anchored not stored refs pending

Sunspot Bright Points

Debi Prasad Choudhary, Toshifumi Shimizu

arxiv:1001.2354 v1 · 2010-01-14 · 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{NY2YYE2AJCT3YRJRF4QJGIMYC7}

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	2026-05-18T02:09:52.368494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e358c134048a7bc45312f2093219817da222ccc345dd57f4187a6bb10481c06

Aliases

arxiv: 1001.2354 · arxiv_version: 1001.2354v1 · doi: 10.48550/arxiv.1001.2354 · pith_short_12: NY2YYE2AJCT3 · pith_short_16: NY2YYE2AJCT3YRJR · pith_short_8: NY2YYE2A

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/NY2YYE2AJCT3YRJRF4QJGIMYC7 \
  | 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: 6e358c134048a7bc45312f2093219817da222ccc345dd57f4187a6bb10481c06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d08e6ffbfeeb8936c89e1ef49971a3559eb15be0dd3ae68db572339323c5d47c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-01-14T15:56:34Z",
    "title_canon_sha256": "5f35200d59b17956db5eeeb0f6dab45e4fa0ac29325ffcdc068cd7bd9f057fbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.2354",
    "kind": "arxiv",
    "version": 1
  }
}