Pith Number

pith:E2QRQR5L

pith:2015:E2QRQR5LWYK5VSOBLMACF4I3AA

not attested not anchored not stored refs pending

Small-scale dynamos on the solar surface: dependence on magnetic Prandtl number

H.C. Spruit, I. Thaler

arxiv:1505.04575 v1 · 2015-05-18 · 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{E2QRQR5LWYK5VSOBLMACF4I3AA}

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	2026-05-18T01:55:00.372635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26a11847abb615dac9c15b0022f11b000ea63a62be08abf157d7731040709dfa

Aliases

arxiv: 1505.04575 · arxiv_version: 1505.04575v1 · doi: 10.48550/arxiv.1505.04575 · pith_short_12: E2QRQR5LWYK5 · pith_short_16: E2QRQR5LWYK5VSOB · pith_short_8: E2QRQR5L

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/E2QRQR5LWYK5VSOBLMACF4I3AA \
  | 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: 26a11847abb615dac9c15b0022f11b000ea63a62be08abf157d7731040709dfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c7ba79f147636f28753c16b8dcaa4209e7ee2a1266c1ad39b9e12029dc18f48",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-05-18T10:00:51Z",
    "title_canon_sha256": "a5f276ebf7207515cfa57676d05cad04187ebb8b3caa3216fbd4c4f55fd011d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04575",
    "kind": "arxiv",
    "version": 1
  }
}