Pith Number

pith:X3VE3KY5

pith:2018:X3VE3KY5W2BPDSQLHYK26WFKNK

not attested not anchored not stored refs pending

The positivication of coalgebraic logics

Alexander Kurz, Fredrik Dahlqvist

arxiv:1812.07288 v1 · 2018-12-18 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X3VE3KY5W2BPDSQLHYK26WFKNK}

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	2026-05-17T23:58:00.942395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

beea4dab1db682f1ca0b3e15af58aa6ab4a6eb08b8834bb48cecd50fda33dbd7

Aliases

arxiv: 1812.07288 · arxiv_version: 1812.07288v1 · doi: 10.48550/arxiv.1812.07288 · pith_short_12: X3VE3KY5W2BP · pith_short_16: X3VE3KY5W2BPDSQL · pith_short_8: X3VE3KY5

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/X3VE3KY5W2BPDSQLHYK26WFKNK \
  | 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: beea4dab1db682f1ca0b3e15af58aa6ab4a6eb08b8834bb48cecd50fda33dbd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c19b56fa54d2ca6c9dddbac93b5f4e2004affe3eaf198982313dacf6b8a8a785",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-12-18T10:48:39Z",
    "title_canon_sha256": "337c424bb04270570a2bcc9971da5d7747be07e7b477ac434ffe853cc0c85aaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.07288",
    "kind": "arxiv",
    "version": 1
  }
}