Pith Number

pith:NXPEM5VI

pith:2013:NXPEM5VIF3MEEE7XK4WR65X6YY

not attested not anchored not stored refs pending

Existence Of Contact Structure

Renyi Ma

arxiv:1307.7693 v4 · 2013-07-20 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NXPEM5VIF3MEEE7XK4WR65X6YY}

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	2026-05-18T03:08:24.650107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6dde4676a82ed84213f7572d1f76fec62a747830a2c516c1f57155a86ac4f32c

Aliases

arxiv: 1307.7693 · arxiv_version: 1307.7693v4 · doi: 10.48550/arxiv.1307.7693 · pith_short_12: NXPEM5VIF3ME · pith_short_16: NXPEM5VIF3MEEE7X · pith_short_8: NXPEM5VI

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/NXPEM5VIF3MEEE7XK4WR65X6YY \
  | 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: 6dde4676a82ed84213f7572d1f76fec62a747830a2c516c1f57155a86ac4f32c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36945193d7020f08e82eb2283a983ea6392ac1c24d6b5302af7cdb47b6f0531c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2013-07-20T03:26:03Z",
    "title_canon_sha256": "bbfea35494c557e91e36c86b438dff99684b6caa8cc13dca612d447f6d089468"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7693",
    "kind": "arxiv",
    "version": 4
  }
}