Pith Number

pith:V6K4S47H

pith:2022:V6K4S47HJOZIRILKMPXSO2DQGS

not attested not anchored not stored refs pending

Normalization for Fitch-Style Modal Calculi

Carlos Tom\'e Corti\~nas, Fabian Ruch, Nachiappan Valliappan

arxiv:2207.12807 v1 · 2022-07-26 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V6K4S47HJOZIRILKMPXSO2DQGS}

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	2026-07-05T04:43:26.485350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af95c973e74bb288a16a63ef27687034bc4c944b82e732c38b2685f68902050e

Aliases

arxiv: 2207.12807 · arxiv_version: 2207.12807v1 · doi: 10.48550/arxiv.2207.12807 · pith_short_12: V6K4S47HJOZI · pith_short_16: V6K4S47HJOZIRILK · pith_short_8: V6K4S47H

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/V6K4S47HJOZIRILKMPXSO2DQGS \
  | 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: af95c973e74bb288a16a63ef27687034bc4c944b82e732c38b2685f68902050e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4332f1453de58fd332e99e3a87c25a989735608de61c4f290a5511f7b20c3d3e",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2022-07-26T11:03:20Z",
    "title_canon_sha256": "c9abcb1684f4be169d818c39f95a43e04e816b307207f04259be169e68cdcb12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.12807",
    "kind": "arxiv",
    "version": 1
  }
}