Pith Number

pith:MDEE2OVF

pith:2013:MDEE2OVFSEK7IQXRQY53O4DIU7

not attested not anchored not stored refs pending

Null twisted geometries

Mingyi Zhang, Simone Speziale

arxiv:1311.3279 v2 · 2013-11-13 · gr-qc

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T02:52:58.196479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60c84d3aa59115f442f1863bb77068a7ca5dd145773e0d001291007fb7e896f2

Aliases

arxiv: 1311.3279 · arxiv_version: 1311.3279v2 · doi: 10.48550/arxiv.1311.3279

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/MDEE2OVFSEK7IQXRQY53O4DIU7 \
  | 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: 60c84d3aa59115f442f1863bb77068a7ca5dd145773e0d001291007fb7e896f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "020bb281102742713920cc604b83c8a1c6e17cd9a8621f7d761f1e30a95764a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-11-13T20:19:36Z",
    "title_canon_sha256": "df30ccb4ff06cd189a7161f6027d28596f6c0c91b33784b26968ead09d9955d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3279",
    "kind": "arxiv",
    "version": 2
  }
}