Pith Number

pith:PPYKEXZO

pith:2011:PPYKEXZOG25J5F6J4MT5AEBS6V

not attested not anchored not stored refs pending

Multiscale magnetic fields in spiral galaxies: evolution and reversals

David Moss, Dmitri Sokoloff, Marita Krause, Rainer Beck, Rodion Stepanov, Tigran Arshakian

arxiv:1109.4062 v1 · 2011-09-19 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPYKEXZOG25J5F6J4MT5AEBS6V}

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	2026-05-18T02:00:29.276005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf0a25f2e36ba9e97c9e327d01032f55e876d936cc4a4b470087437f335fb2f

Aliases

arxiv: 1109.4062 · arxiv_version: 1109.4062v1 · doi: 10.48550/arxiv.1109.4062 · pith_short_12: PPYKEXZOG25J · pith_short_16: PPYKEXZOG25J5F6J · pith_short_8: PPYKEXZO

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/PPYKEXZOG25J5F6J4MT5AEBS6V \
  | 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: 7bf0a25f2e36ba9e97c9e327d01032f55e876d936cc4a4b470087437f335fb2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5f1fa96bfb804bc00fed35df7633ad79e91bcc0c78130a60e9ee681aebec385",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-19T15:38:45Z",
    "title_canon_sha256": "8ddea0d8e7e12df4abd4c4665740f40d874877a3359ef2bd5872b1253d2dace4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4062",
    "kind": "arxiv",
    "version": 1
  }
}