Pith Number

pith:T4KXJWUR

pith:2014:T4KXJWURRHN4KT3QJDGQINDVXG

not attested not anchored not stored refs pending

On Sunspot and Starspot Lifetimes

Patrick Hartigan, Stephen J. Bradshaw

arxiv:1409.4337 v1 · 2014-09-15 · 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{T4KXJWURRHN4KT3QJDGQINDVXG}

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	2026-05-18T01:42:02.534391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f1574da9189dbc54f7048cd043475b987db6161fd17ad358906abe37c5b67fd

Aliases

arxiv: 1409.4337 · arxiv_version: 1409.4337v1 · doi: 10.48550/arxiv.1409.4337 · pith_short_12: T4KXJWURRHN4 · pith_short_16: T4KXJWURRHN4KT3Q · pith_short_8: T4KXJWUR

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/T4KXJWURRHN4KT3QJDGQINDVXG \
  | 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: 9f1574da9189dbc54f7048cd043475b987db6161fd17ad358906abe37c5b67fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b2a86a4dabbc98e3977c9d1ba418dd0e523a6dbc6bb025a25788299d64a5e5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-09-15T17:20:12Z",
    "title_canon_sha256": "4eee5c85fe6a47fa2523d41a126c519f628d2f1372b582e25991c93feaa3d3a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.4337",
    "kind": "arxiv",
    "version": 1
  }
}