Pith Number

pith:Q5FI6A25

pith:2026:Q5FI6A25T3UQ5HM5UDEVOYH5W2

not attested not anchored not stored refs pending

UCOB: Learning to Utilize and Evolve Agentic Skills via Credit-Aware On-Policy Bidirectional Self-Distillation

Chengdong Xu, Dongbin Zhao, Dong Li, Linjing Li, Qichao Zhang, Songjun Tu, Xiangyuan Lan, Yaocheng Zhang, Yiwen Ma

arxiv:2606.29502 v1 · 2026-06-28 · 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{Q5FI6A25T3UQ5HM5UDEVOYH5W2}

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	2026-06-30T01:18:09.445667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

874a8f035d9ee90e9d9da0c95760fdb6998015c761c02c3c9314c3b598f86f3c

Aliases

arxiv: 2606.29502 · arxiv_version: 2606.29502v1 · doi: 10.48550/arxiv.2606.29502 · pith_short_12: Q5FI6A25T3UQ · pith_short_16: Q5FI6A25T3UQ5HM5 · pith_short_8: Q5FI6A25

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/Q5FI6A25T3UQ5HM5UDEVOYH5W2 \
  | 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: 874a8f035d9ee90e9d9da0c95760fdb6998015c761c02c3c9314c3b598f86f3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd65251b43d2383a77db151a092ffcc5d7a911efa3c17abe7be8da6edad4038d",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-28T17:02:18Z",
    "title_canon_sha256": "d2cf3df97570302a7ac17f1ad11113b5de7f58fbc980b2339f171bac6991711a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.29502",
    "kind": "arxiv",
    "version": 1
  }
}