Pith Number

pith:HUFFKULX

pith:2026:HUFFKULXV6LQMLUQTJGZXOB27C

not attested not anchored not stored refs pending

Type Checking Project Haystack Grids using JSON Schema and Pydantic

Gerald Schweiger, Samina Kadkhoda Masoumali, Thomas Hirsch

arxiv:2606.24891 v1 · 2026-05-19 · cs.PL · cs.AI · cs.SE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HUFFKULXV6LQMLUQTJGZXOB27C}

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	2026-06-25T00:17:45.289094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d0a555177af97062e909a4d9bb83af8b112b87c860a9a64c4a1f5a6b06d2f06

Aliases

arxiv: 2606.24891 · arxiv_version: 2606.24891v1 · doi: 10.48550/arxiv.2606.24891 · pith_short_12: HUFFKULXV6LQ · pith_short_16: HUFFKULXV6LQMLUQ · pith_short_8: HUFFKULX

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/HUFFKULXV6LQMLUQTJGZXOB27C \
  | 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: 3d0a555177af97062e909a4d9bb83af8b112b87c860a9a64c4a1f5a6b06d2f06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3eeab4a5866a851e6dfc9acf48f834cbbaf88ee4192f357625a8b83ec63fd9b7",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.SE"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-05-19T15:07:37Z",
    "title_canon_sha256": "658371b04a5d2202f029d174cb7d036c3370bedb3d8263bd61bb42c573b32011"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.24891",
    "kind": "arxiv",
    "version": 1
  }
}