Pith Number

pith:NPMSBEUW

pith:2018:NPMSBEUWZTS5CTSZ4S2HCPCGE5

not attested not anchored not stored refs pending

Geomagnetic storm forecasting service StormFocus: 5 years online

Anatoly Petrukovich, Tatiana Podladchikova, Yuri Yermolaev

arxiv:1802.06590 v1 · 2018-02-19 · physics.space-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPMSBEUWZTS5CTSZ4S2HCPCGE5}

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	2026-05-18T00:23:02.858272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bd9209296cce5d14e59e4b4713c462748c01b9afb081cafc63a1690ef375781

Aliases

arxiv: 1802.06590 · arxiv_version: 1802.06590v1 · doi: 10.48550/arxiv.1802.06590 · pith_short_12: NPMSBEUWZTS5 · pith_short_16: NPMSBEUWZTS5CTSZ · pith_short_8: NPMSBEUW

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/NPMSBEUWZTS5CTSZ4S2HCPCGE5 \
  | 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: 6bd9209296cce5d14e59e4b4713c462748c01b9afb081cafc63a1690ef375781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39b882811284e4ef6a44647e6ce3ae13dadc62629e1e0cfb1a5abc36a803bd66",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2018-02-19T11:30:32Z",
    "title_canon_sha256": "a1e5acc9ce5c6920be1f99e0a26147037549490e6fe6c9a4161f26d4c1667e2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06590",
    "kind": "arxiv",
    "version": 1
  }
}