Pith Number

pith:VYRV2R3M

pith:2009:VYRV2R3M3QLGK3JU2AQQSH4JBU

not attested not anchored not stored refs pending

The critical role of magnetic helicity in astrophysical large-scale dynamos

Axel Brandenburg (Nordita)

arxiv:0909.4377 v1 · 2009-09-24 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VYRV2R3M3QLGK3JU2AQQSH4JBU}

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	2026-07-04T17:14:39.024920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae235d476cdc16656d34d021091f890d1ed675e35e9fe71e168012bc23a58e2f

Aliases

arxiv: 0909.4377 · arxiv_version: 0909.4377v1 · doi: 10.48550/arxiv.0909.4377 · pith_short_12: VYRV2R3M3QLG · pith_short_16: VYRV2R3M3QLGK3JU · pith_short_8: VYRV2R3M

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/VYRV2R3M3QLGK3JU2AQQSH4JBU \
  | 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: ae235d476cdc16656d34d021091f890d1ed675e35e9fe71e168012bc23a58e2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d306059bd63912b7173798fa11378bdcf0f82b75b4df7f64997e6d4d4029a6e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-24T14:10:52Z",
    "title_canon_sha256": "6abb8ff78ead15197a7b5aca39196467289a75daf2bb124786f10f6510b60dae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4377",
    "kind": "arxiv",
    "version": 1
  }
}