Pith Number

pith:E75NT57A

pith:2020:E75NT57ANPEAJ4JJMLQXROCVQU

not attested not anchored not stored refs pending

Partially Observable Concurrent Kleene Algebra

Alexandra Silva, Jana Wagemaker, Jurriaan Rot, Paul Brunet, Simon Docherty, Tobias Kapp\'e

arxiv:2007.07593 v2 · 2020-07-15 · cs.LO · cs.FL · 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{E75NT57ANPEAJ4JJMLQXROCVQU}

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	2026-07-05T05:38:25.626237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27fad9f7e06bc804f12962e178b8558508dc22ce60f2616629bf940bddeb55ef

Aliases

arxiv: 2007.07593 · arxiv_version: 2007.07593v2 · doi: 10.48550/arxiv.2007.07593 · pith_short_12: E75NT57ANPEA · pith_short_16: E75NT57ANPEAJ4JJ · pith_short_8: E75NT57A

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/E75NT57ANPEAJ4JJMLQXROCVQU \
  | 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: 27fad9f7e06bc804f12962e178b8558508dc22ce60f2616629bf940bddeb55ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "768a107a0a06b6b201dc41976c7e159d29fbb402442f1de850b0ae426991aca0",
    "cross_cats_sorted": [
      "cs.FL",
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2020-07-15T10:16:36Z",
    "title_canon_sha256": "35fb10e6ab33d682eb84416e9ec3ec6d3d221e4542723f597be41ccf11e89728"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.07593",
    "kind": "arxiv",
    "version": 2
  }
}