Pith Number

pith:ZROJB42X

pith:2026:ZROJB42XLLBOSY362OJ7Y45HQX

not attested not anchored not stored refs pending

ARCO: Adaptive Rubric with Co-Evolution for Multi-Step LLM-Based Agents

Jingsen Zhang, Rui Li, Xiaohe Bo, Xu Chen, Yuanzi Li, Zihang Tian

arxiv:2606.21262 v1 · 2026-06-19 · 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{ZROJB42XLLBOSY362OJ7Y45HQX}

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	2026-06-23T01:12:35.150902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc5c90f3575ac2e9637ed393fc73a785c0e8f6dced216f28307c71c9d7986436

Aliases

arxiv: 2606.21262 · arxiv_version: 2606.21262v1 · doi: 10.48550/arxiv.2606.21262 · pith_short_12: ZROJB42XLLBO · pith_short_16: ZROJB42XLLBOSY36 · pith_short_8: ZROJB42X

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/ZROJB42XLLBOSY362OJ7Y45HQX \
  | 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: cc5c90f3575ac2e9637ed393fc73a785c0e8f6dced216f28307c71c9d7986436

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a113f3fc328ca9593509a31cfa0f8219b65156f5b1cfc5855d1fc32b465e6d08",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-19T09:38:02Z",
    "title_canon_sha256": "24cd19b5fd802287e79e519b3e08ee62f2024a5592812236c6a398f80250fec5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21262",
    "kind": "arxiv",
    "version": 1
  }
}