Pith Number

pith:SU3YQWBF

pith:2013:SU3YQWBFXQ5KCNNI4OEAP3HWZH

not attested not anchored not stored refs pending

Solar magnetic activity cycles, coronal potential field models and eruption rates

G.J.D. Petrie

arxiv:1303.1218 v4 · 2013-03-05 · 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{SU3YQWBFXQ5KCNNI4OEAP3HWZH}

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	2026-05-18T01:51:16.483605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9537885825bc3aa135a8e38807ecf6c9c781bf1687350953b0b87603f676d422

Aliases

arxiv: 1303.1218 · arxiv_version: 1303.1218v4 · doi: 10.48550/arxiv.1303.1218 · pith_short_12: SU3YQWBFXQ5K · pith_short_16: SU3YQWBFXQ5KCNNI · pith_short_8: SU3YQWBF

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/SU3YQWBFXQ5KCNNI4OEAP3HWZH \
  | 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: 9537885825bc3aa135a8e38807ecf6c9c781bf1687350953b0b87603f676d422

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a9a247fe6ec36af6e71765ea1b0becaa6d58923652cff28ff5f1cae00870a3c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-03-05T23:06:34Z",
    "title_canon_sha256": "6d7b3d990af5361d2f2964e1f56ca0ba5f6d66662ad656354c5e1f8484ee8f39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1218",
    "kind": "arxiv",
    "version": 4
  }
}