Pith Number

pith:CUHDU4G7

pith:2026:CUHDU4G7SOMDRZKFAAMSTH4XXW

not attested not anchored not stored refs pending

When Synthetic Speech Is All You Have: Better Call GRPO

Andreas Stolcke, Esa\'u Villatoro-Tello, Hasindri Watawana, Kadri Hacio\u{g}lu, Petr Motlicek, Sergio Burdisso, Shashi Kumar, Yanis Labrak

arxiv:2607.08409 v1 · 2026-07-09 · 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{CUHDU4G7SOMDRZKFAAMSTH4XXW}

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	2026-07-10T01:19:49.725375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

150e3a70df939838e5450019299f97bd8714ea4a57940ac4a89edfb833d34c54

Aliases

arxiv: 2607.08409 · arxiv_version: 2607.08409v1 · doi: 10.48550/arxiv.2607.08409 · pith_short_12: CUHDU4G7SOMD · pith_short_16: CUHDU4G7SOMDRZKF · pith_short_8: CUHDU4G7

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/CUHDU4G7SOMDRZKFAAMSTH4XXW \
  | 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: 150e3a70df939838e5450019299f97bd8714ea4a57940ac4a89edfb833d34c54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17af3e888f2f13d7fef35b4277e452f3139b41528f2b48ba48d995881970730f",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-07-09T12:34:56Z",
    "title_canon_sha256": "092995539192df3d6c0b14d48df8469f932f51d710239eac6055428d0f2953e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.08409",
    "kind": "arxiv",
    "version": 1
  }
}