Pith Number

pith:KMYKN7U4

pith:2013:KMYKN7U4L36GFM2ULJE4Q5OGG6

not attested not anchored not stored refs pending

Essential Magnetohydrodynamics for Astrophysics

H. C. Spruit

arxiv:1301.5572 v3 · 2013-01-23 · astro-ph.IM · 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{KMYKN7U4L36GFM2ULJE4Q5OGG6}

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	2026-05-18T01:13:17.082733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5330a6fe9c5efc62b3545a49c875c637872c6fbe1c807ad2e9f237cf21460948

Aliases

arxiv: 1301.5572 · arxiv_version: 1301.5572v3 · doi: 10.48550/arxiv.1301.5572 · pith_short_12: KMYKN7U4L36G · pith_short_16: KMYKN7U4L36GFM2U · pith_short_8: KMYKN7U4

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/KMYKN7U4L36GFM2ULJE4Q5OGG6 \
  | 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: 5330a6fe9c5efc62b3545a49c875c637872c6fbe1c807ad2e9f237cf21460948

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b8a40567989c10cea15a383cec022697d67c64e10601a1d6c22b5c30fca6f55",
    "cross_cats_sorted": [
      "physics.plasm-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-01-23T17:10:10Z",
    "title_canon_sha256": "172509464d2526e28946bb9b5620ff7fba3af77f61e1e22b463f49ee924ece4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5572",
    "kind": "arxiv",
    "version": 3
  }
}