Pith Number

pith:2ARZKMHH

pith:2026:2ARZKMHH72SCT4XTUKENAOP7KC

not attested not anchored not stored refs pending

Towards a Certifying Grounder

Alexander Ek, Bart Bogaerts, Carlos Cantero, Daimy Van Caudenberg

arxiv:2607.21199 v1 · 2026-07-23 · 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{2ARZKMHH72SCT4XTUKENAOP7KC}

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	2026-07-24T01:24:18.661111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0239530e7fea429f2f3a288d039ff508fb10f71bc29cb69168fcc1219469253

Aliases

arxiv: 2607.21199 · arxiv_version: 2607.21199v1 · doi: 10.48550/arxiv.2607.21199 · pith_short_12: 2ARZKMHH72SC · pith_short_16: 2ARZKMHH72SCT4XT · pith_short_8: 2ARZKMHH

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/2ARZKMHH72SCT4XTUKENAOP7KC \
  | 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: d0239530e7fea429f2f3a288d039ff508fb10f71bc29cb69168fcc1219469253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df1464124049bf89b4b591e8541b32face5931b035ed9b3cc85c5c3b290f475b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-07-23T11:19:24Z",
    "title_canon_sha256": "9c3569b4140f38d877b64d30500518166151f3e3414b35c42982e2ff0da933c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.21199",
    "kind": "arxiv",
    "version": 1
  }
}