Pith Number

pith:EAYAS546

pith:2026:EAYAS546LTSUDJZJXO3S5ZXORR

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MACAA: Belief-Revision Multi-Agent Reasoning for Code Authorship Verification

Chenbin Su, Cong Gao, Ge Chu, Jianfei Tang, Jieshuai Yang, Jingwei Ye, Xin Li, Zhi Wang

A coordinator and four expert agents use belief revision to verify code authorship without any training data.

arxiv:2605.09421 v3 · 2026-05-10 · cs.SE

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\usepackage{pith}
\pithnumber{EAYAS546LTSUDJZJXO3S5ZXORR}

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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.

Claims

C1strongest claim

MACAA achieves 89.15% F1 on same-language benchmarks and 80.00% on mixed cross-language pairs, outperforming the baselines overall in both same-language and cross-language evaluations.

C2weakest assumption

The four expert agents reliably extract non-hallucinated evidence from layout, lexical, syntactic, and programming-pattern dimensions even on heterogeneous or cross-language code pairs, and the coordinator's expansion-contraction-revision process produces auditable yet accurate authorship decisions.

C3one line summary

MACAA is a belief-revision multi-agent framework for training-free code authorship verification that reports 89.15% F1 on same-language benchmarks and 80% on cross-language pairs while outperforming baselines.

References

57 extracted · 57 resolved · 0 Pith anchors

[1] Ruchir Puri, David Kung, Geert Janssen, Wei Zhang, Gi- acomo Domeniconi, Vladimir Zolotov, Julian Dolby, Jie Chen, Mihir Choudhury, Lindsey Decker, and 1 others 2021

[2] arXiv:2509.05396 [cs] 2023

[3] naming: both codes use short, lowercase-dominant identifiers (avg_len<3), suggesting consistent personal naming compression habit

[4] structure: both adopt flat, single-block scripts without helper functions or abstractions

[5] comment: both are comment-free, aligning with rapid-competition authoring style

Receipt and verification

First computed	2026-05-20T00:01:43.426373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

203009779e5ce541a729bbb72ee6ee8c6f188875b59f54fc6f6ec340fbc5a64e

Aliases

arxiv: 2605.09421 · arxiv_version: 2605.09421v3 · doi: 10.48550/arxiv.2605.09421 · pith_short_12: EAYAS546LTSU · pith_short_16: EAYAS546LTSUDJZJ · pith_short_8: EAYAS546

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/EAYAS546LTSUDJZJXO3S5ZXORR \
  | 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: 203009779e5ce541a729bbb72ee6ee8c6f188875b59f54fc6f6ec340fbc5a64e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d883bc926ef9f42dda616c01f1da4d0ac0fa8fb50b7b2b6513e02c4ef9457477",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-05-10T08:47:05Z",
    "title_canon_sha256": "f7d1c5e72f1d5028cadc87adbfd56e9bb36a97103aea04a9ab30b730904089b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.09421",
    "kind": "arxiv",
    "version": 3
  }
}