Pith Number

pith:PFHRXPRF

pith:2025:PFHRXPRFSR6UREAHH64QEBUM3P

not attested not anchored not stored refs pending

Universally Wheeler Languages

Alberto Policriti, Antonio Restivo, Brian Riccardi, Giovanna D'Agostino, Giuseppa Castiglione, Nicola Prezza, Ruben Becker

arxiv:2504.19537 v1 · 2025-04-28 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PFHRXPRFSR6UREAHH64QEBUM3P}

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	2026-07-05T10:54:59.200406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

794f1bbe25947d4890073fb902068cdbe1cee445bca356a3126e229701b0654e

Aliases

arxiv: 2504.19537 · arxiv_version: 2504.19537v1 · doi: 10.48550/arxiv.2504.19537 · pith_short_12: PFHRXPRFSR6U · pith_short_16: PFHRXPRFSR6UREAH · pith_short_8: PFHRXPRF

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/PFHRXPRFSR6UREAHH64QEBUM3P \
  | 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: 794f1bbe25947d4890073fb902068cdbe1cee445bca356a3126e229701b0654e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87f84a46b5d3182118b5469257eb0e44af22f1d395cc5d0fd9152cabae2e1505",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2025-04-28T07:40:16Z",
    "title_canon_sha256": "4feb7c35e87cc86f01ef385e729e91ce3f0810a571c46298d151e93f232b0077"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.19537",
    "kind": "arxiv",
    "version": 1
  }
}