Pith Number

pith:NKOQMFRS

pith:2011:NKOQMFRSIZOQID256KBGD2X7TC

not attested not anchored not stored refs pending

A Spatial Calculus of Wrapped Compartments

Angelo Troina, Cristina Calcagno, Eva Sciacca, Ferruccio Damiani, Livio Bioglio, Mario Coppo, Salvatore Spinella

arxiv:1108.3426 v1 · 2011-08-17 · cs.LO · cs.CE · cs.ET · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NKOQMFRSIZOQID256KBGD2X7TC}

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	2026-05-18T04:15:17.881367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a9d061632465d040f5df28261eaff98b220f5bbf7e774c528123a0275574971

Aliases

arxiv: 1108.3426 · arxiv_version: 1108.3426v1 · doi: 10.48550/arxiv.1108.3426 · pith_short_12: NKOQMFRSIZOQ · pith_short_16: NKOQMFRSIZOQID25 · pith_short_8: NKOQMFRS

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/NKOQMFRSIZOQID256KBGD2X7TC \
  | 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: 6a9d061632465d040f5df28261eaff98b220f5bbf7e774c528123a0275574971

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6116aff97e5edfb1b44e81aef568a2e6fb0266f897d85120c7155b022717804e",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.ET",
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-08-17T09:00:56Z",
    "title_canon_sha256": "91a5d2a6595caed4e9de54fdf60be05913810cd6d0e6f18b88567ce82620caa5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3426",
    "kind": "arxiv",
    "version": 1
  }
}