Pith Number

pith:OZC2VEPO

pith:2019:OZC2VEPODUWPCGE2F25P7Y6BNG

not attested not anchored not stored refs pending

Diamond Twin

Toshikazu Sunada

arxiv:1904.07230 v2 · 2019-04-15 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OZC2VEPODUWPCGE2F25P7Y6BNG}

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	2026-05-17T23:45:08.994213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7645aa91ee1d2cf1189a2ebaffe3c169b488db7cc7ba55367d109cbabaf84eff

Aliases

arxiv: 1904.07230 · arxiv_version: 1904.07230v2 · doi: 10.48550/arxiv.1904.07230 · pith_short_12: OZC2VEPODUWP · pith_short_16: OZC2VEPODUWPCGE2 · pith_short_8: OZC2VEPO

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/OZC2VEPODUWPCGE2F25P7Y6BNG \
  | 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: 7645aa91ee1d2cf1189a2ebaffe3c169b488db7cc7ba55367d109cbabaf84eff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84b714fa800b8d7945a663193786c530c89fa315d47f8b216f42b5425488ec7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2019-04-15T06:53:25Z",
    "title_canon_sha256": "e83136c6485628b25820824eb655f08dfc591e85ca03e3ddb4e0010736b24da5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07230",
    "kind": "arxiv",
    "version": 2
  }
}