Pith Number

pith:KW2W4VD3

pith:2022:KW2W4VD3DFIPYR6Y5XMTCVSRFK

not attested not anchored not stored refs pending

Identifying concept libraries from language about object structure

Catherine Wong, Gabriel Grand, Jacob Andreas, Joshua B. Tenenbaum, Judith E. Fan, Robert D. Hawkins, William P. McCarthy, Yoni Friedman

arxiv:2205.05666 v1 · 2022-05-11 · cs.CL · 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{KW2W4VD3DFIPYR6Y5XMTCVSRFK}

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	2026-07-05T04:22:28.312794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55b56e547b1950fc47d8edd93156512ab1ab4dc6513897cc6d9e45ae3f8b6e2e

Aliases

arxiv: 2205.05666 · arxiv_version: 2205.05666v1 · doi: 10.48550/arxiv.2205.05666 · pith_short_12: KW2W4VD3DFIP · pith_short_16: KW2W4VD3DFIPYR6Y · pith_short_8: KW2W4VD3

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/KW2W4VD3DFIPYR6Y5XMTCVSRFK \
  | 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: 55b56e547b1950fc47d8edd93156512ab1ab4dc6513897cc6d9e45ae3f8b6e2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea4d316f3c3968a1cd62bd67d66cb11a83205fd52245be41034539a025fe693c",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2022-05-11T17:49:25Z",
    "title_canon_sha256": "1d1a9498ac94e0b6c5ba35b7c818dd49bce2ba2ad3c81e3bef08c77531f3d106"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.05666",
    "kind": "arxiv",
    "version": 1
  }
}