Pith Number

pith:FPTXECB5

pith:2018:FPTXECB53UNBEXX4BEVQV3YL57

not attested not anchored not stored refs pending

A gauge-invariant reversible cellular automaton

Giuseppe Di Molfetta, Nathana\"el Eon, Pablo Arrighi

arxiv:1802.07644 v2 · 2018-02-21 · cs.FL · nlin.CG · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FPTXECB53UNBEXX4BEVQV3YL57}

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	2026-05-18T00:11:57.316042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2be772083ddd1a125efc092b0aef0befe427a8f987330c66902ab47c73c8e5dd

Aliases

arxiv: 1802.07644 · arxiv_version: 1802.07644v2 · doi: 10.48550/arxiv.1802.07644 · pith_short_12: FPTXECB53UNB · pith_short_16: FPTXECB53UNBEXX4 · pith_short_8: FPTXECB5

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/FPTXECB53UNBEXX4BEVQV3YL57 \
  | 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: 2be772083ddd1a125efc092b0aef0befe427a8f987330c66902ab47c73c8e5dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff83784fd58160df3a39f7c50dd80534e93255857286eee2a486e9db0fdd3b64",
    "cross_cats_sorted": [
      "nlin.CG",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-02-21T16:15:21Z",
    "title_canon_sha256": "a48209ece925db47f026c0f7ef684279157da805a4f8cbf3797cd7cf848c04f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07644",
    "kind": "arxiv",
    "version": 2
  }
}