Pith Number

pith:W7JIC7LS

pith:2026:W7JIC7LSBYMIHAPPPCCUIZ2H3G

not attested not anchored not stored refs pending

UltraX: Refining Pre-Training Data at Scale with Adaptive Programmatic Editing

Dongsheng Liu, Hengyu Zhao, Jie Cai, Jie Zhou, Qiang Ma, XinLong Zhao, Xuanhe Zhou, Xu Han, Yudong Wang, Zheng Wang, Zhiyuan Liu, Zixuan Fu

arxiv:2607.08646 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{W7JIC7LSBYMIHAPPPCCUIZ2H3G}

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	2026-07-10T01:19:56.481612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7d2817d720e188381ef7885446747d9a05d26f1e52309d4b23b190a367fe105

Aliases

arxiv: 2607.08646 · arxiv_version: 2607.08646v1 · doi: 10.48550/arxiv.2607.08646 · pith_short_12: W7JIC7LSBYMI · pith_short_16: W7JIC7LSBYMIHAPP · pith_short_8: W7JIC7LS

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/W7JIC7LSBYMIHAPPPCCUIZ2H3G \
  | 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: b7d2817d720e188381ef7885446747d9a05d26f1e52309d4b23b190a367fe105

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d34d5fc7dbf9beafd19f32f71033b40258905be5d8528096e0c85d4bde87c191",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-07-09T16:18:07Z",
    "title_canon_sha256": "cd473c08f1adc82ccfeddd392527f0e9f353dd173d7c1342d3236578f6b4582c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.08646",
    "kind": "arxiv",
    "version": 1
  }
}