Pith Number

pith:EPAK6ZHC

pith:2002:EPAK6ZHCZHGGNRV5TDZ7TDDSY3

not attested not anchored not stored refs pending

Scaling of solar wind epsilon and the AU, AL and AE indices

(2) British Antarctic Survey, B. Hnat (1), Cambridge, Coventry, G. Rowlands (1), M.P. Freeman (2) ((1) University of Warwick, N.W. Watkins (2), S.C. Chapman (1), UK, UK)

arxiv:physics/0208021 v4 · 2002-08-06 · physics.space-ph · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPAK6ZHCZHGGNRV5TDZ7TDDSY3}

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	2026-05-18T01:38:09.203180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23c0af64e2c9cc66c6bd98f3f98c72c6d9500be97fe9df123a56f088c19d1542

Aliases

arxiv: physics/0208021 · arxiv_version: physics/0208021v4 · doi: 10.48550/arxiv.physics/0208021 · pith_short_12: EPAK6ZHCZHGG · pith_short_16: EPAK6ZHCZHGGNRV5 · pith_short_8: EPAK6ZHC

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/EPAK6ZHCZHGGNRV5TDZ7TDDSY3 \
  | 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: 23c0af64e2c9cc66c6bd98f3f98c72c6d9500be97fe9df123a56f088c19d1542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4829c736dc1f186c868fc73909327daac5bbdb7e30713f151ad92a75f02139dc",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2002-08-06T09:29:45Z",
    "title_canon_sha256": "cfc8fefcc078d7b83589193fa5ee71f7494a72d57a221e6ba9251a2d4dd992a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0208021",
    "kind": "arxiv",
    "version": 4
  }
}