Pith Number

pith:PY3CPHPJ

pith:2026:PY3CPHPJS366GNUSDQYASKKZBY

not attested not anchored not stored refs pending

Effect Systems as Abstract Interpretations

Colin S. Gordon

arxiv:2606.19686 v1 · 2026-06-18 · 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{PY3CPHPJS366GNUSDQYASKKZBY}

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	2026-06-19T16:12:32.153085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e36279de996fde336921c300929590e37792824c38332e9b307928af6aa5807

Aliases

arxiv: 2606.19686 · arxiv_version: 2606.19686v1 · doi: 10.48550/arxiv.2606.19686 · pith_short_12: PY3CPHPJS366 · pith_short_16: PY3CPHPJS366GNUS · pith_short_8: PY3CPHPJ

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/PY3CPHPJS366GNUSDQYASKKZBY \
  | 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: 7e36279de996fde336921c300929590e37792824c38332e9b307928af6aa5807

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3762bf26d4507dc3b512ca51a664215be1649b13bbc3363284e72620b3e2f0a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-06-18T01:23:46Z",
    "title_canon_sha256": "e4cb95d797517d3e85fb8bb9ada28c96ec6751b51482fc5f4a17c0fa009dbf1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.19686",
    "kind": "arxiv",
    "version": 1
  }
}