Pith Number

pith:ZTFD3CSB

pith:2026:ZTFD3CSBEFCITNE7HJE57RL3H7

not attested not anchored not stored refs pending

When Types Intersect and Effects Get Handled

Stefano Catozi, Taro Sekiyama, Ugo Dal Lago

arxiv:2606.09526 v1 · 2026-06-08 · cs.LO · 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{ZTFD3CSBEFCITNE7HJE57RL3H7}

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	2026-06-09T02:08:53.382953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccca3d8a41214489b49f3a49dfc57b3fe0fd14327f2b9d829af7a36d0b877864

Aliases

arxiv: 2606.09526 · arxiv_version: 2606.09526v1 · doi: 10.48550/arxiv.2606.09526 · pith_short_12: ZTFD3CSBEFCI · pith_short_16: ZTFD3CSBEFCITNE7 · pith_short_8: ZTFD3CSB

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/ZTFD3CSBEFCITNE7HJE57RL3H7 \
  | 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: ccca3d8a41214489b49f3a49dfc57b3fe0fd14327f2b9d829af7a36d0b877864

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9d35d03db23ea838e94e7c73f68702a57e1bffe275417c5721d0bd8958b34b1",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-06-08T14:12:22Z",
    "title_canon_sha256": "c279cb8e25aa6b11d95f74eec3bce42e39268e947b1ca21138bee41d1e221fdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.09526",
    "kind": "arxiv",
    "version": 1
  }
}