Pith Number

pith:6ZWAAYZG

pith:2025:6ZWAAYZGQRFOKFLRGL5TIMVMWO

not attested not anchored not stored refs pending

FACTORY: A Challenging Human-Verified Prompt Set for Long-Form Factuality

Adina Williams, Gargi Ghosh, Mingda Chen, Scott Yih, Xilun Chen, Yang Li

arxiv:2508.00109 v1 · 2025-07-31 · 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{6ZWAAYZGQRFOKFLRGL5TIMVMWO}

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.

Cited by

1 paper in Pith

Only Say What You Know: Calibration-Aware Generation for Long-Form Factuality

Receipt and verification

First computed	2026-07-05T11:46:49.041004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f66c006326844ae5157132fb3432acb3a31cb81d8f127376956e753177ec864d

Aliases

arxiv: 2508.00109 · arxiv_version: 2508.00109v1 · doi: 10.48550/arxiv.2508.00109 · pith_short_12: 6ZWAAYZGQRFO · pith_short_16: 6ZWAAYZGQRFOKFLR · pith_short_8: 6ZWAAYZG

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/6ZWAAYZGQRFOKFLRGL5TIMVMWO \
  | 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: f66c006326844ae5157132fb3432acb3a31cb81d8f127376956e753177ec864d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "888de1387a90ea8979d5c8c39c89441b967de9a8736e6e07ac0b9660f109105e",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-07-31T19:00:11Z",
    "title_canon_sha256": "e2043ef2ec7aacc8ea8edd3eed97dba617a24c2fafba1ad04e83f92a2799e1d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.00109",
    "kind": "arxiv",
    "version": 1
  }
}