Pith Number

pith:PQLY5FJX

pith:2014:PQLY5FJXQYYK7DUY467KM72Q25

not attested not anchored not stored refs pending

Computer-aided measurement of the heliographic coordinates of sunspot groups

H. Cakmak

arxiv:1407.1626 v1 · 2014-07-07 · 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{PQLY5FJXQYYK7DUY467KM72Q25}

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	2026-05-18T01:42:41.508196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c178e95378630af8e98e7bea67f50d75b258e8606e6e98debd087aa23597390

Aliases

arxiv: 1407.1626 · arxiv_version: 1407.1626v1 · doi: 10.48550/arxiv.1407.1626 · pith_short_12: PQLY5FJXQYYK · pith_short_16: PQLY5FJXQYYK7DUY · pith_short_8: PQLY5FJX

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/PQLY5FJXQYYK7DUY467KM72Q25 \
  | 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: 7c178e95378630af8e98e7bea67f50d75b258e8606e6e98debd087aa23597390

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51ddb52c4eb28e677c23c13cc958f86a5adf2e4464c1dadcd4a9e80915f6b2c6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-07-07T08:51:41Z",
    "title_canon_sha256": "20bf88e50033cb57619693c0b398903ee4780c02c6155beaeecbefcdd11bffbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1626",
    "kind": "arxiv",
    "version": 1
  }
}