Pith Number

pith:WMDPD4K4

pith:1998:WMDPD4K4C2NGFBI7CLID72VRWA

not attested not anchored not stored refs pending

Galactic and Accretion Disk Dynamos

Ethan T. Vishniac

arxiv:astro-ph/9812236 v1 · 1998-12-11 · 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{WMDPD4K4C2NGFBI7CLID72VRWA}

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	2026-05-18T01:40:13.544146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b306f1f15c169a62851f12d03feab1b0158c76e61e3bbae5bc2639442e2d4879

Aliases

arxiv: astro-ph/9812236 · arxiv_version: astro-ph/9812236v1 · doi: 10.48550/arxiv.astro-ph/9812236 · pith_short_12: WMDPD4K4C2NG · pith_short_16: WMDPD4K4C2NGFBI7 · pith_short_8: WMDPD4K4

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/WMDPD4K4C2NGFBI7CLID72VRWA \
  | 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: b306f1f15c169a62851f12d03feab1b0158c76e61e3bbae5bc2639442e2d4879

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95947fc28e04cb901a0d92b650c2c10265052eec8d0144e7f07adab11fc6b785",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-11T20:13:37Z",
    "title_canon_sha256": "288ab7e9aed0e4de9f71febf894771293d18320b17f9a4378a2a5fd5c1ce0113"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812236",
    "kind": "arxiv",
    "version": 1
  }
}