Pith Number

pith:MNI6YRZQ

pith:2026:MNI6YRZQUXN62WE2Z2AFETOVG6

not attested not anchored not stored refs pending

PhantomFill: When the Form Demands an Answer, Language Models Invent One

Rana Muhammad Usman

arxiv:2607.20492 v1 · 2026-06-11 · cs.LG · cs.AI · 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{MNI6YRZQUXN62WE2Z2AFETOVG6}

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	2026-07-24T00:23:18.672245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6351ec4730a5dbed589ace80524dd5379b6d6069c0c21b184857c57731f06a18

Aliases

arxiv: 2607.20492 · arxiv_version: 2607.20492v1 · doi: 10.48550/arxiv.2607.20492 · pith_short_12: MNI6YRZQUXN6 · pith_short_16: MNI6YRZQUXN62WE2 · pith_short_8: MNI6YRZQ

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/MNI6YRZQUXN62WE2Z2AFETOVG6 \
  | 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: 6351ec4730a5dbed589ace80524dd5379b6d6069c0c21b184857c57731f06a18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4294db006591c02c845de7e48bc1c30b992ec4697fdfa17b01be74ddce48f123",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-11T12:15:05Z",
    "title_canon_sha256": "6a6eb90a0661d582b0145ba1a28726e21646f80bc2789c6e2aff07c8e9306f53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.20492",
    "kind": "arxiv",
    "version": 1
  }
}