Pith Number

pith:WPRI2MDA

pith:2013:WPRI2MDAS34L3HRNXPJAU6VQ2U

not attested not anchored not stored refs pending

Contract agreements via logic

Massimo Bartoletti, Paolo Di Giamberardino, Roberto Zunino, Tiziana Cimoli

arxiv:1306.0026 v2 · 2013-05-31 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPRI2MDAS34L3HRNXPJAU6VQ2U}

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	2026-05-18T03:10:14.242767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3e28d306096f8bd9e2dbbd20a7ab0d52ec87f834cca3d5431f32beaebb64f46

Aliases

arxiv: 1306.0026 · arxiv_version: 1306.0026v2 · doi: 10.48550/arxiv.1306.0026 · pith_short_12: WPRI2MDAS34L · pith_short_16: WPRI2MDAS34L3HRN · pith_short_8: WPRI2MDA

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/WPRI2MDAS34L3HRNXPJAU6VQ2U \
  | 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: b3e28d306096f8bd9e2dbbd20a7ab0d52ec87f834cca3d5431f32beaebb64f46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1b6e0bc3228bd4351c180e43cc58ea136cfaf0531db04f8ef9e7afd46e6c3eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-05-31T20:56:07Z",
    "title_canon_sha256": "1401efe1dec8a9ac52e232203e392710809d23d7c12cc813df9aba5cbc0f3131"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0026",
    "kind": "arxiv",
    "version": 2
  }
}