Pith Number

pith:2CQEY57W

pith:2026:2CQEY57WKME3INBQMTEKD6MOJH

not attested not anchored not stored refs pending

Semantic Labelling in Practice

Dieter Hofbauer, Johannes Waldmann

arxiv:2607.00521 v1 · 2026-07-01 · 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{2CQEY57WKME3INBQMTEKD6MOJH}

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	2026-07-02T01:17:46.543925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0a04c77f65309b4343064c8a1f98e49d87498241c3bd56ee014b8fb94a46362

Aliases

arxiv: 2607.00521 · arxiv_version: 2607.00521v1 · doi: 10.48550/arxiv.2607.00521 · pith_short_12: 2CQEY57WKME3 · pith_short_16: 2CQEY57WKME3INBQ · pith_short_8: 2CQEY57W

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/2CQEY57WKME3INBQMTEKD6MOJH \
  | 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: d0a04c77f65309b4343064c8a1f98e49d87498241c3bd56ee014b8fb94a46362

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9093acd9aa635c3860a6b546abb613ffebdc1eee527d5514c95e957ba63917ca",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-07-01T07:07:55Z",
    "title_canon_sha256": "d12f963d9208b470b12fe7175355d0b4eff48aa14b1f7c8125bd7a56359bac8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.00521",
    "kind": "arxiv",
    "version": 1
  }
}