Pith Number

pith:WZYWX4WP

pith:2012:WZYWX4WPSLOOEN3F7SAWINAFO7

not attested not anchored not stored refs pending

Refinement Modal Logic

Hans van Ditmarsch, James Hales, Laura Bozzelli, Sophie Pinchinat, Tim French

arxiv:1202.3538 v2 · 2012-02-16 · cs.LO · 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{WZYWX4WPSLOOEN3F7SAWINAFO7}

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	2026-05-18T00:24:32.268183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6716bf2cf92dce23765fc8164340577d3bbd1494a45c37441c2af39093aef7b

Aliases

arxiv: 1202.3538 · arxiv_version: 1202.3538v2 · doi: 10.48550/arxiv.1202.3538 · pith_short_12: WZYWX4WPSLOO · pith_short_16: WZYWX4WPSLOOEN3F · pith_short_8: WZYWX4WP

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/WZYWX4WPSLOOEN3F7SAWINAFO7 \
  | 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: b6716bf2cf92dce23765fc8164340577d3bbd1494a45c37441c2af39093aef7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d9c22244279fdff9f22287d6409c6bb3f08548ffe505fe6e430c084f83430fe",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-02-16T09:13:18Z",
    "title_canon_sha256": "751d67fb52e3ad9b6b5d91cce5fc7f8fc09ae83bccfc6bbe8dfbe15614d55481"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3538",
    "kind": "arxiv",
    "version": 2
  }
}