Pith Number

pith:L5UT3MNU

pith:2017:L5UT3MNU2U6ALWW3CCOEGPFV2Q

not attested not anchored not stored refs pending

Magnetised Polish doughnuts revisited

Jos\'e A. Font, Sergio Gimeno-Soler

arxiv:1707.03867 v1 · 2017-07-12 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L5UT3MNU2U6ALWW3CCOEGPFV2Q}

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	2026-05-18T00:30:43.970518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f693db1b4d53c05dadb109c433cb5d40a2d99125bfc957e9925d59781528e95

Aliases

arxiv: 1707.03867 · arxiv_version: 1707.03867v1 · doi: 10.48550/arxiv.1707.03867 · pith_short_12: L5UT3MNU2U6A · pith_short_16: L5UT3MNU2U6ALWW3 · pith_short_8: L5UT3MNU

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/L5UT3MNU2U6ALWW3CCOEGPFV2Q \
  | 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: 5f693db1b4d53c05dadb109c433cb5d40a2d99125bfc957e9925d59781528e95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c23be7abc812a558c5ae794c44d93b0797a9a582b2051831693933173e183abc",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-07-12T18:58:35Z",
    "title_canon_sha256": "161842d9f8577a9eb1a7dbc5d9dbdef351811ec7eadf285384fb0787e7f3a35c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.03867",
    "kind": "arxiv",
    "version": 1
  }
}