Pith Number

pith:2QP4FQLQ

pith:2009:2QP4FQLQ7RTCNOREZFWFRW5KZD

not attested not anchored not stored refs pending

Homopolar oscillating-disc dynamo driven by parametric resonance

Franck Plunian, J\=anis Priede, Ra\'ul Avalos-Z\'u\~niga

arxiv:0905.0400 v1 · 2009-05-04 · physics.geo-ph · physics.plasm-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{2QP4FQLQ7RTCNOREZFWFRW5KZD}

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	2026-05-18T01:09:24.276572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d41fc2c170fc6626ba24c96c58dbaac8cef020d20e829185e8208747a0edbbaf

Aliases

arxiv: 0905.0400 · arxiv_version: 0905.0400v1 · doi: 10.48550/arxiv.0905.0400 · pith_short_12: 2QP4FQLQ7RTC · pith_short_16: 2QP4FQLQ7RTCNORE · pith_short_8: 2QP4FQLQ

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/2QP4FQLQ7RTCNOREZFWFRW5KZD \
  | 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: d41fc2c170fc6626ba24c96c58dbaac8cef020d20e829185e8208747a0edbbaf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "835fc777e6064508a56e0f89bae909b8f7d4e2c4c239b5476f9abf3140aba708",
    "cross_cats_sorted": [
      "physics.plasm-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2009-05-04T15:50:19Z",
    "title_canon_sha256": "13c03f10846baf4fc6ec44d025b084e2d582f00dfc91997ca1af0ab4990c2f47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0400",
    "kind": "arxiv",
    "version": 1
  }
}