Pith Number

pith:EBBXJUN2

pith:2026:EBBXJUN2VNNJHCH4ERA2VSX5XG

not attested not anchored not stored refs pending

Copy Less, Ground More: Overcoming Repetitive Copying in Long-Context Reasoning via Evidence-Aware Reinforcement Learning

Lizhe Fang, Tianyi Tang, Weizhou Shen, Yisen Wang

arxiv:2607.19345 v1 · 2026-07-21 · 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{EBBXJUN2VNNJHCH4ERA2VSX5XG}

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	2026-07-22T01:24:38.364729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

204374d1baab5a9388fc2441aacafdb99e1780c1dee8ad148a3db264ffd02783

Aliases

arxiv: 2607.19345 · arxiv_version: 2607.19345v1 · doi: 10.48550/arxiv.2607.19345 · pith_short_12: EBBXJUN2VNNJ · pith_short_16: EBBXJUN2VNNJHCH4 · pith_short_8: EBBXJUN2

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/EBBXJUN2VNNJHCH4ERA2VSX5XG \
  | 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: 204374d1baab5a9388fc2441aacafdb99e1780c1dee8ad148a3db264ffd02783

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff74119a689853e3032e0b29ffd2ffa52f4a4aa44033a1ace7d250c824e5bc46",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-07-21T17:59:21Z",
    "title_canon_sha256": "598d3e929fccbd52b8a2faf98a67a223c80e794a6d8479e8c739a6d4762649f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.19345",
    "kind": "arxiv",
    "version": 1
  }
}