Pith Number

pith:P72OTKKO

pith:2007:P72OTKKO6LLQRMIUKKPK2MFK3Z

not attested not anchored not stored refs pending

The helicity constraint in spherical shell dynamos

A. Brandenburg, D. Mitra, D. Moss, P. J. K\"apyl\"a, R. Tavakol

arxiv:0711.3616 v1 · 2007-11-22 · astro-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{P72OTKKO6LLQRMIUKKPK2MFK3Z}

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	2026-05-18T04:09:04.533295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ff4e9a94ef2d708b114529ead30aade5dd4576d37000ef4f669b38c8499ff6b

Aliases

arxiv: 0711.3616 · arxiv_version: 0711.3616v1 · doi: 10.48550/arxiv.0711.3616 · pith_short_12: P72OTKKO6LLQ · pith_short_16: P72OTKKO6LLQRMIU · pith_short_8: P72OTKKO

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/P72OTKKO6LLQRMIUKKPK2MFK3Z \
  | 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: 7ff4e9a94ef2d708b114529ead30aade5dd4576d37000ef4f669b38c8499ff6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28b543d95f868ddafd1cfb0cad79ad9d55b20f671027d6d98128783cb3d84dd1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-11-22T16:43:15Z",
    "title_canon_sha256": "091456494b2076bf87971253ce676fedfe679ee2234c27249fa0ed134aa7e923"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.3616",
    "kind": "arxiv",
    "version": 1
  }
}