Pith Number

pith:3BZU7NHR

pith:2019:3BZU7NHROIW33AYELLGA632FWB

not attested not anchored not stored refs pending

Extreme time-integrated geomagnetic activity: Ap index statistics

Anton Artemyev, Didier Mourenas, Vassilis Angelopoulos, Xiao-Jia Zhang

arxiv:1901.09823 v1 · 2019-01-28 · physics.geo-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{3BZU7NHROIW33AYELLGA632FWB}

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	2026-05-17T23:55:23.737045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8734fb4f1722dbd83045acc0f6f45b04c33fb21796707023f9dc9d9416a8572

Aliases

arxiv: 1901.09823 · arxiv_version: 1901.09823v1 · doi: 10.48550/arxiv.1901.09823 · pith_short_12: 3BZU7NHROIW3 · pith_short_16: 3BZU7NHROIW33AYE · pith_short_8: 3BZU7NHR

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/3BZU7NHROIW33AYELLGA632FWB \
  | 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: d8734fb4f1722dbd83045acc0f6f45b04c33fb21796707023f9dc9d9416a8572

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e701e90cfb549273c3e70555fa94020381a608e95fd21010edf3efcf75b59329",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2019-01-28T17:17:39Z",
    "title_canon_sha256": "19a71343e1473298cc40e69a3ade02b6972dfd7464853c7b202de9581d3fe200"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09823",
    "kind": "arxiv",
    "version": 1
  }
}