Pith Number

pith:Z4O3CGHK

pith:2011:Z4O3CGHKAGNTZG43HFXZRXTULH

not attested not anchored not stored refs pending

The tile assembly model is intrinsically universal

Damien Woods, David Doty, Jack H. Lutz, Matthew J. Patitz, Robert T. Schweller, Scott M. Summers

arxiv:1111.3097 v2 · 2011-11-14 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4O3CGHKAGNTZG43HFXZRXTULH}

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	2026-05-18T03:58:24.454735Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf1db118ea019b3c9b9b396f98de7459c23d913562be23a74e1ddc39828d610b

Aliases

arxiv: 1111.3097 · arxiv_version: 1111.3097v2 · doi: 10.48550/arxiv.1111.3097 · pith_short_12: Z4O3CGHKAGNT · pith_short_16: Z4O3CGHKAGNTZG43 · pith_short_8: Z4O3CGHK

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/Z4O3CGHKAGNTZG43HFXZRXTULH \
  | 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: cf1db118ea019b3c9b9b396f98de7459c23d913562be23a74e1ddc39828d610b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f69790b4f397a5a511644678b80274ce4b30d366c8e84cd416061e53310fab4",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-11-14T05:16:46Z",
    "title_canon_sha256": "6223e138d98ac3c768e4f24cb413d2806e1d9f13a939eded638b8b1ecf47d1cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3097",
    "kind": "arxiv",
    "version": 2
  }
}