Pith Number

pith:D6CR2XHZ

pith:2009:D6CR2XHZOA2NHTWF7RADKG45MQ

not attested not anchored not stored refs pending

Solar active regions: a nonparametric statistical analysis

I. Tuominen, J. Pelt, M.J. Korpi

arxiv:0908.4155 v1 · 2009-08-28 · 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{D6CR2XHZOA2NHTWF7RADKG45MQ}

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	2026-05-18T02:12:21.644040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f851d5cf97034d3cec5fc40351b9d6432954ee724b3b36dc88647b946832fd0

Aliases

arxiv: 0908.4155 · arxiv_version: 0908.4155v1 · doi: 10.48550/arxiv.0908.4155 · pith_short_12: D6CR2XHZOA2N · pith_short_16: D6CR2XHZOA2NHTWF · pith_short_8: D6CR2XHZ

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/D6CR2XHZOA2NHTWF7RADKG45MQ \
  | 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: 1f851d5cf97034d3cec5fc40351b9d6432954ee724b3b36dc88647b946832fd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b23cf9531034c9ec2dac2d9b63a8f1ab639aef75875c2afab368a72e61138847",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-28T08:36:52Z",
    "title_canon_sha256": "ee431619f6d56fc2179f90d36dc6c71c679a60534ddf99bd8d72e8531368fec3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4155",
    "kind": "arxiv",
    "version": 1
  }
}