Pith Number

pith:2KQY5CPE

pith:2026:2KQY5CPE3ADFEO4TNL2NB5NRJ6

not attested not anchored not stored refs pending

What Am I Missing? Question-Answering as Hidden State Probing

Chu Fei Luo, Samuel Dahan, Xiaodan Zhu

arxiv:2605.31561 v1 · 2026-05-29 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2KQY5CPE3ADFEO4TNL2NB5NRJ6}

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	2026-06-01T02:04:12.673341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2a18e89e4d806523b936af4d0f5b14f8b80d9b505335dc0120ee4db717296ed

Aliases

arxiv: 2605.31561 · arxiv_version: 2605.31561v1 · doi: 10.48550/arxiv.2605.31561 · pith_short_12: 2KQY5CPE3ADF · pith_short_16: 2KQY5CPE3ADFEO4T · pith_short_8: 2KQY5CPE

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/2KQY5CPE3ADFEO4TNL2NB5NRJ6 \
  | 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: d2a18e89e4d806523b936af4d0f5b14f8b80d9b505335dc0120ee4db717296ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a130cc1fdedcdc24b281275da88397ef45461c47e0cac8ef55d0aa8c2e328f31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-29T17:27:07Z",
    "title_canon_sha256": "608a9a3f51c661c19ce780dd19e6e207ad7d2ab120c6ca68f51ee89b5220f500"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.31561",
    "kind": "arxiv",
    "version": 1
  }
}