Pith Number

pith:5M3JTTPY

pith:2022:5M3JTTPYPVC3RQ3X3UF557KJFV

not attested not anchored not stored refs pending

Physical Neural Cellular Automata for 2D Shape Classification

Andres Faina, Kasper Stoy, Kathryn Walker, Rasmus Berg Palm, Rodrigo Moreno Garcia, Sebastian Risi

arxiv:2203.07548 v2 · 2022-03-14 · cs.RO · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5M3JTTPYPVC3RQ3X3UF557KJFV}

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	2026-07-05T04:44:43.083062Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb3699cdf87d45b8c377dd0bdefd492d545bcdd649580e4133213e07aa41c59f

Aliases

arxiv: 2203.07548 · arxiv_version: 2203.07548v2 · doi: 10.48550/arxiv.2203.07548 · pith_short_12: 5M3JTTPYPVC3 · pith_short_16: 5M3JTTPYPVC3RQ3X · pith_short_8: 5M3JTTPY

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/5M3JTTPYPVC3RQ3X3UF557KJFV \
  | 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: eb3699cdf87d45b8c377dd0bdefd492d545bcdd649580e4133213e07aa41c59f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ecbaea7f0d0a30d109a21e7cb54ab64e20033609da1f180c1e08261089b0099",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2022-03-14T23:18:13Z",
    "title_canon_sha256": "437154432bb1451936d61de05204774af14d2758d53261f82c43e74f0238cb28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.07548",
    "kind": "arxiv",
    "version": 2
  }
}