Pith Number

pith:XDROP4JJ

pith:2012:XDROP4JJNC3JXRSIB3Y3HWLJRO

not attested not anchored not stored refs pending

Coevolving Cellular Automata with Memory for Chemical Computing: Boolean Logic Gates in the B-Z Reaction

Andrew Adamatzky, Ben De Lacy Costello, Christopher Stone, Larry Bull, Rita Toth

arxiv:1212.2762 v1 · 2012-12-12 · cs.ET · nlin.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XDROP4JJNC3JXRSIB3Y3HWLJRO}

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	2026-05-18T03:38:35.454339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8e2e7f12968b69bc6480ef1b3d9698b858edb8179d3e1a01339472f79e5cbfb

Aliases

arxiv: 1212.2762 · arxiv_version: 1212.2762v1 · doi: 10.48550/arxiv.1212.2762 · pith_short_12: XDROP4JJNC3J · pith_short_16: XDROP4JJNC3JXRSI · pith_short_8: XDROP4JJ

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/XDROP4JJNC3JXRSIB3Y3HWLJRO \
  | 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: b8e2e7f12968b69bc6480ef1b3d9698b858edb8179d3e1a01339472f79e5cbfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a3d78ab1adf5a8dd2bd5e83c6f947ff4ad1db9f5864d2f1514f7008eeb11d4a",
    "cross_cats_sorted": [
      "nlin.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.ET",
    "submitted_at": "2012-12-12T10:27:31Z",
    "title_canon_sha256": "9fade1080820622fb5808270c6d9c2674305d6686d2a889b985f34134a474fe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2762",
    "kind": "arxiv",
    "version": 1
  }
}